Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (25 commits)
  em28xx: remove backward compat macro added on a previous fix
  V4L/DVB (9748): em28xx: fix compile warning
  V4L/DVB (9743): em28xx: fix oops audio
  V4L/DVB (9742): em28xx-alsa: implement another locking schema
  V4L/DVB (9732): sms1xxx: use new firmware for Hauppauge WinTV MiniStick
  V4L/DVB (9691): gspca: Move the video device to a separate area.
  V4L/DVB (9690): gspca: Lock the subdrivers via module_get/put.
  V4L/DVB (9689): gspca: Memory leak when disconnect while streaming.
  V4L/DVB (9668): em28xx: fix a race condition with hald
  V4L/DVB (9664): af9015: don't reconnect device in USB-bus
  V4L/DVB (9647): em28xx: void having two concurrent control URB's
  V4L/DVB (9646): em28xx: avoid allocating/dealocating memory on every control urb
  V4L/DVB (9645): em28xx: Avoid memory leaks if registration fails
  V4L/DVB (9639): Make dib0700 remote control support work with firmware v1.20
  V4L/DVB (9635): v4l: s2255drv fix firmware test on big-endian
  V4L/DVB (9634): Make sure the i2c gate is open before powering down tuner
  V4L/DVB (9632): make em28xx aux audio input work
  V4L/DVB (9631): Make s2api work for ATSC support
  V4L/DVB (9627): em28xx: Avoid i2c register error for boards without eeprom
  V4L/DVB (9608): Fix section mismatch warning for dm1105 during make
  ...

drivers/media/dvb/dm1105/dm1105.c

@@ -376,7 +376,7 @@ static void dm1105dvb_dma_unmap(struct dm1105dvb *dm1105dvb)
 	pci_free_consistent(dm1105dvb->pdev, 6*DM1105_DMA_BYTES, dm1105dvb->ts_buf, dm1105dvb->dma_addr);
 }
 
-static void __devinit dm1105dvb_enable_irqs(struct dm1105dvb *dm1105dvb)
+static void dm1105dvb_enable_irqs(struct dm1105dvb *dm1105dvb)
 {
 	outb(INTMAK_ALLMASK, dm_io_mem(DM1105_INTMAK));
 	outb(1, dm_io_mem(DM1105_CR));

drivers/media/dvb/dvb-core/dvb_frontend.c

@@ -585,6 +585,8 @@ restart:
 		if (fe->ops.set_voltage)
 			fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
 		if (fe->ops.tuner_ops.sleep) {
+			if (fe->ops.i2c_gate_ctrl)
+				fe->ops.i2c_gate_ctrl(fe, 1);
 			fe->ops.tuner_ops.sleep(fe);
 			if (fe->ops.i2c_gate_ctrl)
 				fe->ops.i2c_gate_ctrl(fe, 0);
@@ -934,7 +936,8 @@ void dtv_property_dump(struct dtv_property *tvp)
 int is_legacy_delivery_system(fe_delivery_system_t s)
 {
 	if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) ||
-		(s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS))
+	   (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS) ||
+	   (s == SYS_ATSC))
 		return 1;
 
 	return 0;

drivers/media/dvb/dvb-usb/af9015.c

@@ -681,12 +681,6 @@ static int af9015_download_firmware(struct usb_device *udev,
 		goto error;
 	}
 
-	/* firmware is running, reconnect device in the usb bus */
-	req.cmd = RECONNECT_USB;
-	ret = af9015_rw_udev(udev, &req);
-	if (ret)
-		err("reconnect failed: %d", ret);
-
 error:
 	return ret;
 }
@@ -1208,6 +1202,7 @@ static struct dvb_usb_device_properties af9015_properties[] = {
 		.usb_ctrl = DEVICE_SPECIFIC,
 		.download_firmware = af9015_download_firmware,
 		.firmware = "dvb-usb-af9015.fw",
+		.no_reconnect = 1,
 
 		.size_of_priv = sizeof(struct af9015_state), \
 
@@ -1306,6 +1301,7 @@ static struct dvb_usb_device_properties af9015_properties[] = {
 		.usb_ctrl = DEVICE_SPECIFIC,
 		.download_firmware = af9015_download_firmware,
 		.firmware = "dvb-usb-af9015.fw",
+		.no_reconnect = 1,
 
 		.size_of_priv = sizeof(struct af9015_state), \
 

drivers/media/dvb/dvb-usb/dib0700.h

@@ -22,7 +22,7 @@ extern int dvb_usb_dib0700_debug;
 
 #define REQUEST_I2C_READ     0x2
 #define REQUEST_I2C_WRITE    0x3
-#define REQUEST_POLL_RC      0x4
+#define REQUEST_POLL_RC      0x4 /* deprecated in firmware v1.20 */
 #define REQUEST_JUMPRAM      0x8
 #define REQUEST_SET_CLOCK    0xB
 #define REQUEST_SET_GPIO     0xC
@@ -40,11 +40,14 @@ struct dib0700_state {
 	u16 mt2060_if1[2];
 	u8 rc_toggle;
 	u8 rc_counter;
+	u8 rc_func_version;
 	u8 is_dib7000pc;
 	u8 fw_use_new_i2c_api;
 	u8 disable_streaming_master_mode;
 };
 
+extern int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion,
+			       u32 *romversion, u32 *ramversion, u32 *fwtype);
 extern int dib0700_set_gpio(struct dvb_usb_device *, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val);
 extern int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3);
 extern int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen);

drivers/media/dvb/dvb-usb/dib0700_core.c

@@ -19,6 +19,22 @@ MODULE_PARM_DESC(dvb_usb_dib0700_ir_proto, "set ir protocol (0=NEC, 1=RC5 (defau
 
 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 
+
+int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion,
+			u32 *romversion, u32 *ramversion, u32 *fwtype)
+{
+	u8 b[16];
+	int ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
+				  REQUEST_GET_VERSION,
+				  USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
+				  b, sizeof(b), USB_CTRL_GET_TIMEOUT);
+	*hwversion  = (b[0] << 24)  | (b[1] << 16)  | (b[2] << 8)  | b[3];
+	*romversion = (b[4] << 24)  | (b[5] << 16)  | (b[6] << 8)  | b[7];
+	*ramversion = (b[8] << 24)  | (b[9] << 16)  | (b[10] << 8) | b[11];
+	*fwtype     = (b[12] << 24) | (b[13] << 16) | (b[14] << 8) | b[15];
+	return ret;
+}
+
 /* expecting rx buffer: request data[0] data[1] ... data[2] */
 static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen)
 {

drivers/media/dvb/dvb-usb/dib0700_devices.c

@@ -38,6 +38,7 @@ static struct mt2060_config bristol_mt2060_config[2] = {
 	}
 };
 
+
 static struct dibx000_agc_config bristol_dib3000p_mt2060_agc_config = {
 	.band_caps = BAND_VHF | BAND_UHF,
 	.setup     = (1 << 8) | (5 << 5) | (0 << 4) | (0 << 3) | (0 << 2) | (2 << 0),
@@ -451,8 +452,13 @@ static u8 rc_request[] = { REQUEST_POLL_RC, 0 };
 
 /* Number of keypresses to ignore before start repeating */
 #define RC_REPEAT_DELAY 2
+#define RC_REPEAT_DELAY_V1_20 5
 
-static int dib0700_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
+
+
+/* Used by firmware versions < 1.20 (deprecated) */
+static int dib0700_rc_query_legacy(struct dvb_usb_device *d, u32 *event,
+				   int *state)
 {
 	u8 key[4];
 	int i;
@@ -529,6 +535,137 @@ static int dib0700_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 	return 0;
 }
 
+/* This is the structure of the RC response packet starting in firmware 1.20 */
+struct dib0700_rc_response {
+	u8 report_id;
+	u8 data_state;
+	u8 system_msb;
+	u8 system_lsb;
+	u8 data;
+	u8 not_data;
+};
+
+/* This supports the new IR response format for firmware v1.20 */
+static int dib0700_rc_query_v1_20(struct dvb_usb_device *d, u32 *event,
+				  int *state)
+{
+	struct dvb_usb_rc_key *keymap = d->props.rc_key_map;
+	struct dib0700_state *st = d->priv;
+	struct dib0700_rc_response poll_reply;
+	u8 buf[6];
+	int i;
+	int status;
+	int actlen;
+	int found = 0;
+
+	/* Set initial results in case we exit the function early */
+	*event = 0;
+	*state = REMOTE_NO_KEY_PRESSED;
+
+	/* Firmware v1.20 provides RC data via bulk endpoint 1 */
+	status = usb_bulk_msg(d->udev, usb_rcvbulkpipe(d->udev, 1), buf,
+			      sizeof(buf), &actlen, 50);
+	if (status < 0) {
+		/* No data available (meaning no key press) */
+		return 0;
+	}
+
+	if (actlen != sizeof(buf)) {
+		/* We didn't get back the 6 byte message we expected */
+		err("Unexpected RC response size [%d]", actlen);
+		return -1;
+	}
+
+	poll_reply.report_id  = buf[0];
+	poll_reply.data_state = buf[1];
+	poll_reply.system_msb = buf[2];
+	poll_reply.system_lsb = buf[3];
+	poll_reply.data       = buf[4];
+	poll_reply.not_data   = buf[5];
+
+	/*
+	info("rid=%02x ds=%02x sm=%02x sl=%02x d=%02x nd=%02x\n",
+	     poll_reply.report_id, poll_reply.data_state,
+	     poll_reply.system_msb, poll_reply.system_lsb,
+	     poll_reply.data, poll_reply.not_data);
+	*/
+
+	if ((poll_reply.data + poll_reply.not_data) != 0xff) {
+		/* Key failed integrity check */
+		err("key failed integrity check: %02x %02x %02x %02x",
+		    poll_reply.system_msb, poll_reply.system_lsb,
+		    poll_reply.data, poll_reply.not_data);
+		return -1;
+	}
+
+	/* Find the key in the map */
+	for (i = 0; i < d->props.rc_key_map_size; i++) {
+		if (keymap[i].custom == poll_reply.system_lsb &&
+		    keymap[i].data == poll_reply.data) {
+			*event = keymap[i].event;
+			found = 1;
+			break;
+		}
+	}
+
+	if (found == 0) {
+		err("Unknown remote controller key: %02x %02x %02x %02x",
+		    poll_reply.system_msb, poll_reply.system_lsb,
+		    poll_reply.data, poll_reply.not_data);
+		d->last_event = 0;
+		return 0;
+	}
+
+	if (poll_reply.data_state == 1) {
+		/* New key hit */
+		st->rc_counter = 0;
+		*event = keymap[i].event;
+		*state = REMOTE_KEY_PRESSED;
+		d->last_event = keymap[i].event;
+	} else if (poll_reply.data_state == 2) {
+		/* Key repeated */
+		st->rc_counter++;
+
+		/* prevents unwanted double hits */
+		if (st->rc_counter > RC_REPEAT_DELAY_V1_20) {
+			*event = d->last_event;
+			*state = REMOTE_KEY_PRESSED;
+			st->rc_counter = RC_REPEAT_DELAY_V1_20;
+		}
+	} else {
+		err("Unknown data state [%d]", poll_reply.data_state);
+	}
+
+	return 0;
+}
+
+static int dib0700_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
+{
+	struct dib0700_state *st = d->priv;
+
+	/* Because some people may have improperly named firmware files,
+	   let's figure out whether to use the new firmware call or the legacy
+	   call based on the firmware version embedded in the file */
+	if (st->rc_func_version == 0) {
+		u32 hwver, romver, ramver, fwtype;
+		int ret = dib0700_get_version(d, &hwver, &romver, &ramver,
+					      &fwtype);
+		if (ret < 0) {
+			err("Could not determine version info");
+			return -1;
+		}
+		if (ramver < 0x10200)
+			st->rc_func_version = 1;
+		else
+			st->rc_func_version = 2;
+	}
+
+	if (st->rc_func_version == 2)
+		return dib0700_rc_query_v1_20(d, event, state);
+	else
+		return dib0700_rc_query_legacy(d, event, state);
+}
+
 static struct dvb_usb_rc_key dib0700_rc_keys[] = {
 	/* Key codes for the tiny Pinnacle remote*/
 	{ 0x07, 0x00, KEY_MUTE },

drivers/media/dvb/dvb-usb/usb-urb.c

@@ -135,7 +135,7 @@ stream->buf_list[stream->buf_num], (long long)stream->dma_addr[stream->buf_num])
 
 static int usb_bulk_urb_init(struct usb_data_stream *stream)
 {
-	int i;
+	int i, j;
 
 	if ((i = usb_allocate_stream_buffers(stream,stream->props.count,
 					stream->props.u.bulk.buffersize)) < 0)
@@ -143,9 +143,13 @@ static int usb_bulk_urb_init(struct usb_data_stream *stream)
 
 	/* allocate the URBs */
 	for (i = 0; i < stream->props.count; i++) {
-		if ((stream->urb_list[i] = usb_alloc_urb(0,GFP_ATOMIC)) == NULL)
+		stream->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
+		if (!stream->urb_list[i]) {
+			deb_mem("not enough memory for urb_alloc_urb!.\n");
+			for (j = 0; j < i; j++)
+				usb_free_urb(stream->urb_list[i]);
 			return -ENOMEM;
-
+		}
 		usb_fill_bulk_urb( stream->urb_list[i], stream->udev,
 				usb_rcvbulkpipe(stream->udev,stream->props.endpoint),
 				stream->buf_list[i],
@@ -170,9 +174,14 @@ static int usb_isoc_urb_init(struct usb_data_stream *stream)
 	for (i = 0; i < stream->props.count; i++) {
 		struct urb *urb;
 		int frame_offset = 0;
-		if ((stream->urb_list[i] =
-					usb_alloc_urb(stream->props.u.isoc.framesperurb,GFP_ATOMIC)) == NULL)
+
+		stream->urb_list[i] = usb_alloc_urb(stream->props.u.isoc.framesperurb, GFP_ATOMIC);
+		if (!stream->urb_list[i]) {
+			deb_mem("not enough memory for urb_alloc_urb!\n");
+			for (j = 0; j < i; j++)
+				usb_free_urb(stream->urb_list[i]);
 			return -ENOMEM;
+		}
 
 		urb = stream->urb_list[i];
 

drivers/media/dvb/siano/sms-cards.c

@@ -95,7 +95,7 @@ static struct sms_board sms_boards[] = {
 	[SMS1XXX_BOARD_HAUPPAUGE_WINDHAM] = {
 		.name	= "Hauppauge WinTV MiniStick",
 		.type	= SMS_NOVA_B0,
-		.fw[DEVICE_MODE_DVBT_BDA] = "sms1xxx-hcw-55xxx-dvbt-01.fw",
+		.fw[DEVICE_MODE_DVBT_BDA] = "sms1xxx-hcw-55xxx-dvbt-02.fw",
 	},
 };
 

drivers/media/dvb/ttusb-budget/dvb-ttusb-budget.c

@@ -808,6 +808,12 @@ static int ttusb_alloc_iso_urbs(struct ttusb *ttusb)
 						 ISO_BUF_COUNT,
 						 &ttusb->iso_dma_handle);
 
+	if (!ttusb->iso_buffer) {
+		dprintk("%s: pci_alloc_consistent - not enough memory\n",
+			__func__);
+		return -ENOMEM;
+	}
+
 	memset(ttusb->iso_buffer, 0,
 	       ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF * ISO_BUF_COUNT);
 
@@ -1659,7 +1665,14 @@ static int ttusb_probe(struct usb_interface *intf, const struct usb_device_id *i
 
 	ttusb_setup_interfaces(ttusb);
 
-	ttusb_alloc_iso_urbs(ttusb);
+	result = ttusb_alloc_iso_urbs(ttusb);
+	if (result < 0) {
+		dprintk("%s: ttusb_alloc_iso_urbs - failed\n", __func__);
+		mutex_unlock(&ttusb->semi2c);
+		kfree(ttusb);
+		return result;
+	}
+
 	if (ttusb_init_controller(ttusb))
 		printk("ttusb_init_controller: error\n");
 

drivers/media/dvb/ttusb-dec/ttusb_dec.c

@@ -1157,6 +1157,12 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec)
 						ISO_BUF_COUNT),
 					       &dec->iso_dma_handle);
 
+	if (!dec->iso_buffer) {
+		dprintk("%s: pci_alloc_consistent - not enough memory\n",
+			__func__);
+		return -ENOMEM;
+	}
+
 	memset(dec->iso_buffer, 0,
 	       ISO_FRAME_SIZE * (FRAMES_PER_ISO_BUF * ISO_BUF_COUNT));
 
@@ -1254,6 +1260,7 @@ static int ttusb_dec_init_usb(struct ttusb_dec *dec)
 		dec->irq_buffer = usb_buffer_alloc(dec->udev,IRQ_PACKET_SIZE,
 					GFP_ATOMIC, &dec->irq_dma_handle);
 		if(!dec->irq_buffer) {
+			usb_free_urb(dec->irq_urb);
 			return -ENOMEM;
 		}
 		usb_fill_int_urb(dec->irq_urb, dec->udev,dec->irq_pipe,

drivers/media/video/em28xx/em28xx-audio.c

@@ -62,7 +62,7 @@ static int em28xx_isoc_audio_deinit(struct em28xx *dev)
 
 	dprintk("Stopping isoc\n");
 	for (i = 0; i < EM28XX_AUDIO_BUFS; i++) {
-		usb_kill_urb(dev->adev->urb[i]);
+		usb_unlink_urb(dev->adev->urb[i]);
 		usb_free_urb(dev->adev->urb[i]);
 		dev->adev->urb[i] = NULL;
 	}
@@ -75,7 +75,6 @@ static void em28xx_audio_isocirq(struct urb *urb)
 	struct em28xx            *dev = urb->context;
 	int                      i;
 	unsigned int             oldptr;
-	unsigned long            flags;
 	int                      period_elapsed = 0;
 	int                      status;
 	unsigned char            *cp;
@@ -96,9 +95,21 @@ static void em28xx_audio_isocirq(struct urb *urb)
 			if (!length)
 				continue;
 
-			spin_lock_irqsave(&dev->adev->slock, flags);
-
 			oldptr = dev->adev->hwptr_done_capture;
+			if (oldptr + length >= runtime->buffer_size) {
+				unsigned int cnt =
+				    runtime->buffer_size - oldptr;
+				memcpy(runtime->dma_area + oldptr * stride, cp,
+				       cnt * stride);
+				memcpy(runtime->dma_area, cp + cnt * stride,
+				       length * stride - cnt * stride);
+			} else {
+				memcpy(runtime->dma_area + oldptr * stride, cp,
+				       length * stride);
+			}
+
+			snd_pcm_stream_lock(substream);
+
 			dev->adev->hwptr_done_capture += length;
 			if (dev->adev->hwptr_done_capture >=
 			    runtime->buffer_size)
@@ -113,19 +124,7 @@ static void em28xx_audio_isocirq(struct urb *urb)
 				period_elapsed = 1;
 			}
 
-			spin_unlock_irqrestore(&dev->adev->slock, flags);
-
-			if (oldptr + length >= runtime->buffer_size) {
-				unsigned int cnt =
-				    runtime->buffer_size - oldptr;
-				memcpy(runtime->dma_area + oldptr * stride, cp,
-				       cnt * stride);
-				memcpy(runtime->dma_area, cp + cnt * stride,
-				       length * stride - cnt * stride);
-			} else {
-				memcpy(runtime->dma_area + oldptr * stride, cp,
-				       length * stride);
-			}
+			snd_pcm_stream_unlock(substream);
 		}
 		if (period_elapsed)
 			snd_pcm_period_elapsed(substream);

drivers/media/video/em28xx/em28xx-core.c

@@ -69,19 +69,33 @@ int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 	int ret, byte;
 
 	if (dev->state & DEV_DISCONNECTED)
-		return(-ENODEV);
+		return -ENODEV;
+
+	if (len > URB_MAX_CTRL_SIZE)
+		return -EINVAL;
 
 	em28xx_regdbg("req=%02x, reg=%02x ", req, reg);
 
+	mutex_lock(&dev->ctrl_urb_lock);
 	ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), req,
 			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			      0x0000, reg, buf, len, HZ);
+			      0x0000, reg, dev->urb_buf, len, HZ);
+	if (ret < 0) {
+		if (reg_debug)
+			printk(" failed!\n");
+		mutex_unlock(&dev->ctrl_urb_lock);
+		return ret;
+	}
+
+	if (len)
+		memcpy(buf, dev->urb_buf, len);
+
+	mutex_unlock(&dev->ctrl_urb_lock);
 
 	if (reg_debug) {
-		printk(ret < 0 ? " failed!\n" : "%02x values: ", ret);
+		printk("%02x values: ", ret);
 		for (byte = 0; byte < len; byte++)
 			printk(" %02x", (unsigned char)buf[byte]);
-
 		printk("\n");
 	}
 
@@ -102,16 +116,20 @@ int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg)
 
 	em28xx_regdbg("req=%02x, reg=%02x:", req, reg);
 
+	mutex_lock(&dev->ctrl_urb_lock);
 	ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), req,
 			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			      0x0000, reg, &val, 1, HZ);
-
-	if (reg_debug)
-		printk(ret < 0 ? " failed!\n" :
-				 "%02x\n", (unsigned char) val);
+			      0x0000, reg, dev->urb_buf, 1, HZ);
+	val = dev->urb_buf[0];
+	mutex_unlock(&dev->ctrl_urb_lock);
 
-	if (ret < 0)
+	if (ret < 0) {
+		printk(" failed!\n");
 		return ret;
+	}
+
+	if (reg_debug)
+		printk("%02x\n", (unsigned char) val);
 
 	return val;
 }
@@ -130,19 +148,13 @@ int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 {
 	int ret;
 
-	/*usb_control_msg seems to expect a kmalloced buffer */
-	unsigned char *bufs;
-
 	if (dev->state & DEV_DISCONNECTED)
 		return -ENODEV;
 
-	if (len < 1)
+	if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
 		return -EINVAL;
 
-	bufs = kmalloc(len, GFP_KERNEL);
-
 	em28xx_regdbg("req=%02x reg=%02x:", req, reg);
-
 	if (reg_debug) {
 		int i;
 		for (i = 0; i < len; ++i)
@@ -150,16 +162,16 @@ int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 		printk("\n");
 	}
 
-	if (!bufs)
-		return -ENOMEM;
-	memcpy(bufs, buf, len);
+	mutex_lock(&dev->ctrl_urb_lock);
+	memcpy(dev->urb_buf, buf, len);
 	ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), req,
 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			      0x0000, reg, bufs, len, HZ);
+			      0x0000, reg, dev->urb_buf, len, HZ);
+	mutex_unlock(&dev->ctrl_urb_lock);
+
 	if (dev->wait_after_write)
 		msleep(dev->wait_after_write);
 
-	kfree(bufs);
 	return ret;
 }
 
@@ -270,6 +282,8 @@ static int em28xx_set_audio_source(struct em28xx *dev)
 			break;
 		case EM28XX_AMUX_LINE_IN:
 			input = EM28XX_AUDIO_SRC_LINE;
+			video = disable;
+			line  = enable;
 			break;
 		case EM28XX_AMUX_AC97_VIDEO:
 			input = EM28XX_AUDIO_SRC_LINE;

drivers/media/video/em28xx/em28xx-i2c.c

@@ -337,9 +337,9 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len)
 	/* Check if board has eeprom */
 	err = i2c_master_recv(&dev->i2c_client, &buf, 0);
 	if (err < 0) {
-		em28xx_errdev("%s: i2c_master_recv failed! err [%d]\n",
-			__func__, err);
-		return err;
+		em28xx_errdev("board has no eeprom\n");
+		memset(eedata, 0, len);
+		return -ENODEV;
 	}
 
 	buf = 0;
@@ -609,14 +609,16 @@ int em28xx_i2c_register(struct em28xx *dev)
 	dev->i2c_client.adapter = &dev->i2c_adap;
 
 	retval = em28xx_i2c_eeprom(dev, dev->eedata, sizeof(dev->eedata));
-	if (retval < 0) {
+	if ((retval < 0) && (retval != -ENODEV)) {
 		em28xx_errdev("%s: em28xx_i2_eeprom failed! retval [%d]\n",
 			__func__, retval);
+
 		return retval;
 	}
 
 	if (i2c_scan)
 		em28xx_do_i2c_scan(dev);
+
 	return 0;
 }
 

drivers/media/video/em28xx/em28xx-video.c

@@ -73,6 +73,7 @@ MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
 
 static LIST_HEAD(em28xx_devlist);
+static DEFINE_MUTEX(em28xx_devlist_mutex);
 
 static unsigned int card[]     = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
@@ -1519,7 +1520,7 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
 	struct em28xx_fh *fh;
 	enum v4l2_buf_type fh_type = 0;
 
-	lock_kernel();
+	mutex_lock(&em28xx_devlist_mutex);
 	list_for_each_entry(h, &em28xx_devlist, devlist) {
 		if (h->vdev->minor == minor) {
 			dev  = h;
@@ -1535,10 +1536,11 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
 			dev   = h;
 		}
 	}
-	if (NULL == dev) {
-		unlock_kernel();
+	mutex_unlock(&em28xx_devlist_mutex);
+	if (NULL == dev)
 		return -ENODEV;
-	}
+
+	mutex_lock(&dev->lock);
 
 	em28xx_videodbg("open minor=%d type=%s users=%d\n",
 				minor, v4l2_type_names[fh_type], dev->users);
@@ -1547,10 +1549,9 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
 	fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
 	if (!fh) {
 		em28xx_errdev("em28xx-video.c: Out of memory?!\n");
-		unlock_kernel();
+		mutex_unlock(&dev->lock);
 		return -ENOMEM;
 	}
-	mutex_lock(&dev->lock);
 	fh->dev = dev;
 	fh->radio = radio;
 	fh->type = fh_type;
@@ -1584,7 +1585,6 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
 			sizeof(struct em28xx_buffer), fh);
 
 	mutex_unlock(&dev->lock);
-	unlock_kernel();
 
 	return errCode;
 }
@@ -1871,6 +1871,7 @@ int em28xx_register_extension(struct em28xx_ops *ops)
 {
 	struct em28xx *dev = NULL;
 
+	mutex_lock(&em28xx_devlist_mutex);
 	mutex_lock(&em28xx_extension_devlist_lock);
 	list_add_tail(&ops->next, &em28xx_extension_devlist);
 	list_for_each_entry(dev, &em28xx_devlist, devlist) {
@@ -1879,6 +1880,7 @@ int em28xx_register_extension(struct em28xx_ops *ops)
 	}
 	printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name);
 	mutex_unlock(&em28xx_extension_devlist_lock);
+	mutex_unlock(&em28xx_devlist_mutex);
 	return 0;
 }
 EXPORT_SYMBOL(em28xx_register_extension);
@@ -1887,6 +1889,7 @@ void em28xx_unregister_extension(struct em28xx_ops *ops)
 {
 	struct em28xx *dev = NULL;
 
+	mutex_lock(&em28xx_devlist_mutex);
 	list_for_each_entry(dev, &em28xx_devlist, devlist) {
 		if (dev)
 			ops->fini(dev);
@@ -1896,6 +1899,7 @@ void em28xx_unregister_extension(struct em28xx_ops *ops)
 	printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name);
 	list_del(&ops->next);
 	mutex_unlock(&em28xx_extension_devlist_lock);
+	mutex_unlock(&em28xx_devlist_mutex);
 }
 EXPORT_SYMBOL(em28xx_unregister_extension);
 
@@ -1921,6 +1925,60 @@ static struct video_device *em28xx_vdev_init(struct em28xx *dev,
 }
 
 
+static int register_analog_devices(struct em28xx *dev)
+{
+	int ret;
+
+	/* allocate and fill video video_device struct */
+	dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
+	if (!dev->vdev) {
+		em28xx_errdev("cannot allocate video_device.\n");
+		return -ENODEV;
+	}
+
+	/* register v4l2 video video_device */
+	ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
+				       video_nr[dev->devno]);
+	if (ret) {
+		em28xx_errdev("unable to register video device (error=%i).\n",
+			      ret);
+		return ret;
+	}
+
+	/* Allocate and fill vbi video_device struct */
+	dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
+
+	/* register v4l2 vbi video_device */
+	ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
+					vbi_nr[dev->devno]);
+	if (ret < 0) {
+		em28xx_errdev("unable to register vbi device\n");
+		return ret;
+	}
+
+	if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
+		dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, "radio");
+		if (!dev->radio_dev) {
+			em28xx_errdev("cannot allocate video_device.\n");
+			return -ENODEV;
+		}
+		ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
+					    radio_nr[dev->devno]);
+		if (ret < 0) {
+			em28xx_errdev("can't register radio device\n");
+			return ret;
+		}
+		em28xx_info("Registered radio device as /dev/radio%d\n",
+			    dev->radio_dev->num);
+	}
+
+	em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
+				dev->vdev->num, dev->vbi_dev->num);
+
+	return 0;
+}
+
+
 /*
  * em28xx_init_dev()
  * allocates and inits the device structs, registers i2c bus and v4l device
@@ -1936,6 +1994,7 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
 
 	dev->udev = udev;
 	mutex_init(&dev->lock);
+	mutex_init(&dev->ctrl_urb_lock);
 	spin_lock_init(&dev->slock);
 	init_waitqueue_head(&dev->open);
 	init_waitqueue_head(&dev->wait_frame);
@@ -1953,8 +2012,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
 	errCode = em28xx_config(dev);
 	if (errCode) {
 		em28xx_errdev("error configuring device\n");
-		em28xx_devused &= ~(1<<dev->devno);
-		kfree(dev);
 		return -ENOMEM;
 	}
 
@@ -2001,50 +2058,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
 		return errCode;
 	}
 
-	list_add_tail(&dev->devlist, &em28xx_devlist);
-
-	/* allocate and fill video video_device struct */
-	dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
-	if (NULL == dev->vdev) {
-		em28xx_errdev("cannot allocate video_device.\n");
-		goto fail_unreg;
-	}
-
-	/* register v4l2 video video_device */
-	retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
-				       video_nr[dev->devno]);
-	if (retval) {
-		em28xx_errdev("unable to register video device (error=%i).\n",
-			      retval);
-		goto fail_unreg;
-	}
-
-	/* Allocate and fill vbi video_device struct */
-	dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
-	/* register v4l2 vbi video_device */
-	if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
-					vbi_nr[dev->devno]) < 0) {
-		em28xx_errdev("unable to register vbi device\n");
-		retval = -ENODEV;
-		goto fail_unreg;
-	}
-
-	if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
-		dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, "radio");
-		if (NULL == dev->radio_dev) {
-			em28xx_errdev("cannot allocate video_device.\n");
-			goto fail_unreg;
-		}
-		retval = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
-					    radio_nr[dev->devno]);
-		if (retval < 0) {
-			em28xx_errdev("can't register radio device\n");
-			goto fail_unreg;
-		}
-		em28xx_info("Registered radio device as /dev/radio%d\n",
-			    dev->radio_dev->num);
-	}
-
 	/* init video dma queues */
 	INIT_LIST_HEAD(&dev->vidq.active);
 	INIT_LIST_HEAD(&dev->vidq.queued);
@@ -2071,8 +2084,14 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
 
 	video_mux(dev, 0);
 
-	em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
-				dev->vdev->num, dev->vbi_dev->num);
+	mutex_lock(&em28xx_devlist_mutex);
+	list_add_tail(&dev->devlist, &em28xx_devlist);
+	retval = register_analog_devices(dev);
+	if (retval < 0) {
+		em28xx_release_resources(dev);
+		mutex_unlock(&em28xx_devlist_mutex);
+		goto fail_reg_devices;
+	}
 
 	mutex_lock(&em28xx_extension_devlist_lock);
 	if (!list_empty(&em28xx_extension_devlist)) {
@@ -2082,13 +2101,12 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
 		}
 	}
 	mutex_unlock(&em28xx_extension_devlist_lock);
+	mutex_unlock(&em28xx_devlist_mutex);
 
 	return 0;
 
-fail_unreg:
-	em28xx_release_resources(dev);
+fail_reg_devices:
 	mutex_unlock(&dev->lock);
-	kfree(dev);
 	return retval;
 }
 
@@ -2231,8 +2249,12 @@ static int em28xx_usb_probe(struct usb_interface *interface,
 
 	/* allocate device struct */
 	retval = em28xx_init_dev(&dev, udev, nr);
-	if (retval)
+	if (retval) {
+		em28xx_devused &= ~(1<<dev->devno);
+		kfree(dev);
+
 		return retval;
+	}
 
 	em28xx_info("Found %s\n", em28xx_boards[dev->model].name);
 

drivers/media/video/em28xx/em28xx.h

@@ -102,6 +102,9 @@
 #define EM28XX_MIN_BUF 4
 #define EM28XX_DEF_BUF 8
 
+/*Limits the max URB message size */
+#define URB_MAX_CTRL_SIZE 80
+
 /* Params for validated field */
 #define EM28XX_BOARD_NOT_VALIDATED 1
 #define EM28XX_BOARD_VALIDATED	   0
@@ -430,6 +433,7 @@ struct em28xx {
 
 	/* locks */
 	struct mutex lock;
+	struct mutex ctrl_urb_lock;	/* protects urb_buf */
 	/* spinlock_t queue_lock; */
 	struct list_head inqueue, outqueue;
 	wait_queue_head_t open, wait_frame, wait_stream;
@@ -451,6 +455,8 @@ struct em28xx {
 	unsigned int *alt_max_pkt_size;	/* array of wMaxPacketSize */
 	struct urb *urb[EM28XX_NUM_BUFS];	/* urb for isoc transfers */
 	char *transfer_buffer[EM28XX_NUM_BUFS];	/* transfer buffers for isoc transfer */
+	char urb_buf[URB_MAX_CTRL_SIZE];	/* urb control msg buffer */
+
 	/* helper funcs that call usb_control_msg */
 	int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 					char *buf, int len);

drivers/media/video/gspca/conex.c

@@ -846,10 +846,13 @@ static int sd_start(struct gspca_dev *gspca_dev)
 	return 0;
 }
 
+/* called on streamoff with alt 0 and on disconnect */
 static void sd_stop0(struct gspca_dev *gspca_dev)
 {
 	int retry = 50;
 
+	if (!gspca_dev->present)
+		return;
 	reg_w_val(gspca_dev, 0x0000, 0x00);
 	reg_r(gspca_dev, 0x0002, 1);
 	reg_w_val(gspca_dev, 0x0053, 0x00);

drivers/media/video/gspca/finepix.c

@@ -276,6 +276,12 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
 	/* Stop the state machine */
 	if (dev->state != FPIX_NOP)
 		wait_for_completion(&dev->can_close);
+}
+
+/* called on streamoff with alt 0 and disconnect */
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+	struct usb_fpix *dev = (struct usb_fpix *) gspca_dev;
 
 	usb_free_urb(dev->control_urb);
 	dev->control_urb = NULL;
@@ -385,6 +391,7 @@ static int sd_start(struct gspca_dev *gspca_dev)
 error:
 	/* Free the ressources */
 	sd_stopN(gspca_dev);
+	sd_stop0(gspca_dev);
 	return ret;
 }
 
@@ -425,6 +432,7 @@ static const struct sd_desc sd_desc = {
 	.init = sd_init,
 	.start = sd_start,
 	.stopN = sd_stopN,
+	.stop0 = sd_stop0,
 };
 
 /* -- device connect -- */

drivers/media/video/gspca/gspca.c

@@ -646,15 +646,14 @@ static void gspca_stream_off(struct gspca_dev *gspca_dev)
 {
 	gspca_dev->streaming = 0;
 	atomic_set(&gspca_dev->nevent, 0);
-	if (gspca_dev->present) {
-		if (gspca_dev->sd_desc->stopN)
-			gspca_dev->sd_desc->stopN(gspca_dev);
-		destroy_urbs(gspca_dev);
-		gspca_set_alt0(gspca_dev);
-		if (gspca_dev->sd_desc->stop0)
-			gspca_dev->sd_desc->stop0(gspca_dev);
-		PDEBUG(D_STREAM, "stream off OK");
-	}
+	if (gspca_dev->present
+	    && gspca_dev->sd_desc->stopN)
+		gspca_dev->sd_desc->stopN(gspca_dev);
+	destroy_urbs(gspca_dev);
+	gspca_set_alt0(gspca_dev);
+	if (gspca_dev->sd_desc->stop0)
+		gspca_dev->sd_desc->stop0(gspca_dev);
+	PDEBUG(D_STREAM, "stream off OK");
 }
 
 static void gspca_set_default_mode(struct gspca_dev *gspca_dev)
@@ -863,7 +862,7 @@ static int dev_open(struct inode *inode, struct file *file)
 	int ret;
 
 	PDEBUG(D_STREAM, "%s open", current->comm);
-	gspca_dev = (struct gspca_dev *) video_devdata(file);
+	gspca_dev = video_drvdata(file);
 	if (mutex_lock_interruptible(&gspca_dev->queue_lock))
 		return -ERESTARTSYS;
 	if (!gspca_dev->present) {
@@ -875,6 +874,13 @@ static int dev_open(struct inode *inode, struct file *file)
 		ret = -EBUSY;
 		goto out;
 	}
+
+	/* protect the subdriver against rmmod */
+	if (!try_module_get(gspca_dev->module)) {
+		ret = -ENODEV;
+		goto out;
+	}
+
 	gspca_dev->users++;
 
 	/* one more user */
@@ -884,10 +890,10 @@ static int dev_open(struct inode *inode, struct file *file)
 #ifdef GSPCA_DEBUG
 	/* activate the v4l2 debug */
 	if (gspca_debug & D_V4L2)
-		gspca_dev->vdev.debug |= V4L2_DEBUG_IOCTL
+		gspca_dev->vdev->debug |= V4L2_DEBUG_IOCTL
 					| V4L2_DEBUG_IOCTL_ARG;
 	else
-		gspca_dev->vdev.debug &= ~(V4L2_DEBUG_IOCTL
+		gspca_dev->vdev->debug &= ~(V4L2_DEBUG_IOCTL
 					| V4L2_DEBUG_IOCTL_ARG);
 #endif
 	ret = 0;
@@ -921,6 +927,7 @@ static int dev_close(struct inode *inode, struct file *file)
 		gspca_dev->memory = GSPCA_MEMORY_NO;
 	}
 	file->private_data = NULL;
+	module_put(gspca_dev->module);
 	mutex_unlock(&gspca_dev->queue_lock);
 
 	PDEBUG(D_STREAM, "close done");
@@ -1748,11 +1755,6 @@ out:
 	return ret;
 }
 
-static void dev_release(struct video_device *vfd)
-{
-	/* nothing */
-}
-
 static struct file_operations dev_fops = {
 	.owner = THIS_MODULE,
 	.open = dev_open,
@@ -1800,7 +1802,7 @@ static struct video_device gspca_template = {
 	.name = "gspca main driver",
 	.fops = &dev_fops,
 	.ioctl_ops = &dev_ioctl_ops,
-	.release = dev_release,		/* mandatory */
+	.release = video_device_release,
 	.minor = -1,
 };
 
@@ -1869,17 +1871,18 @@ int gspca_dev_probe(struct usb_interface *intf,
 	init_waitqueue_head(&gspca_dev->wq);
 
 	/* init video stuff */
-	memcpy(&gspca_dev->vdev, &gspca_template, sizeof gspca_template);
-	gspca_dev->vdev.parent = &dev->dev;
-	memcpy(&gspca_dev->fops, &dev_fops, sizeof gspca_dev->fops);
-	gspca_dev->vdev.fops = &gspca_dev->fops;
-	gspca_dev->fops.owner = module;		/* module protection */
+	gspca_dev->vdev = video_device_alloc();
+	memcpy(gspca_dev->vdev, &gspca_template, sizeof gspca_template);
+	gspca_dev->vdev->parent = &dev->dev;
+	gspca_dev->module = module;
 	gspca_dev->present = 1;
-	ret = video_register_device(&gspca_dev->vdev,
+	video_set_drvdata(gspca_dev->vdev, gspca_dev);
+	ret = video_register_device(gspca_dev->vdev,
 				  VFL_TYPE_GRABBER,
 				  video_nr);
 	if (ret < 0) {
 		err("video_register_device err %d", ret);
+		video_device_release(gspca_dev->vdev);
 		goto out;
 	}
 
@@ -1887,7 +1890,8 @@ int gspca_dev_probe(struct usb_interface *intf,
 	PDEBUG(D_PROBE, "probe ok");
 	return 0;
 out:
-	kref_put(&gspca_dev->kref, gspca_delete);
+	kfree(gspca_dev->usb_buf);
+	kfree(gspca_dev);
 	return ret;
 }
 EXPORT_SYMBOL(gspca_dev_probe);
@@ -1905,7 +1909,7 @@ void gspca_disconnect(struct usb_interface *intf)
 	usb_set_intfdata(intf, NULL);
 
 /* We don't want people trying to open up the device */
-	video_unregister_device(&gspca_dev->vdev);
+	video_unregister_device(gspca_dev->vdev);
 
 	gspca_dev->present = 0;
 	gspca_dev->streaming = 0;

drivers/media/video/gspca/gspca.h

@@ -97,7 +97,7 @@ struct sd_desc {
 	cam_pkt_op pkt_scan;
 /* optional operations */
 	cam_v_op stopN;		/* called on stream off - main alt */
-	cam_v_op stop0;		/* called on stream off - alt 0 */
+	cam_v_op stop0;		/* called on stream off & disconnect - alt 0 */
 	cam_v_op dq_callback;	/* called when a frame has been dequeued */
 	cam_jpg_op get_jcomp;
 	cam_jpg_op set_jcomp;
@@ -120,8 +120,8 @@ struct gspca_frame {
 };
 
 struct gspca_dev {
-	struct video_device vdev;	/* !! must be the first item */
-	struct file_operations fops;
+	struct video_device *vdev;
+	struct module *module;		/* subdriver handling the device */
 	struct usb_device *dev;
 	struct kref kref;
 	struct file *capt_file;		/* file doing video capture */

drivers/media/video/gspca/pac7311.c

@@ -749,10 +749,13 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
 	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
 }
 
+/* called on streamoff with alt 0 and on disconnect */
 static void sd_stop0(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 
+	if (!gspca_dev->present)
+		return;
 	if (sd->sensor == SENSOR_PAC7302) {
 		reg_w(gspca_dev, 0xff, 0x01);
 		reg_w(gspca_dev, 0x78, 0x40);

drivers/media/video/gspca/spca501.c

@@ -2022,8 +2022,11 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
 	reg_write(gspca_dev->dev, SPCA501_REG_CTLRL, 0x01, 0x00);
 }
 
+/* called on streamoff with alt 0 and on disconnect */
 static void sd_stop0(struct gspca_dev *gspca_dev)
 {
+	if (!gspca_dev->present)
+		return;
 	reg_write(gspca_dev->dev, SPCA501_REG_CTLRL, 0x05, 0x00);
 }
 

drivers/media/video/gspca/spca505.c

@@ -742,8 +742,12 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
 	reg_write(gspca_dev->dev, 0x02, 0x00, 0x00);
 }
 
+/* called on streamoff with alt 0 and on disconnect */
 static void sd_stop0(struct gspca_dev *gspca_dev)
 {
+	if (!gspca_dev->present)
+		return;
+
 	/* This maybe reset or power control */
 	reg_write(gspca_dev->dev, 0x03, 0x03, 0x20);
 	reg_write(gspca_dev->dev, 0x03, 0x01, 0x0);

drivers/media/video/gspca/spca561.c

@@ -766,10 +766,13 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
 	}
 }
 
+/* called on streamoff with alt 0 and on disconnect */
 static void sd_stop0(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 
+	if (!gspca_dev->present)
+		return;
 	if (sd->chip_revision == Rev012A) {
 		reg_w_val(gspca_dev->dev, 0x8118, 0x29);
 		reg_w_val(gspca_dev->dev, 0x8114, 0x08);

drivers/media/video/gspca/vc032x.c

@@ -1633,10 +1633,13 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
 	reg_w(dev, 0xa0, 0x09, 0xb003);
 }
 
+/* called on streamoff with alt 0 and on disconnect */
 static void sd_stop0(struct gspca_dev *gspca_dev)
 {
 	struct usb_device *dev = gspca_dev->dev;
 
+	if (!gspca_dev->present)
+		return;
 	reg_w(dev, 0x89, 0xffff, 0xffff);
 }
 

drivers/media/video/gspca/zc3xx.c

@@ -7336,10 +7336,13 @@ static int sd_start(struct gspca_dev *gspca_dev)
 	return 0;
 }
 
+/* called on streamoff with alt 0 and on disconnect */
 static void sd_stop0(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 
+	if (!gspca_dev->present)
+		return;
 	send_unknown(gspca_dev->dev, sd->sensor);
 }
 

drivers/media/video/s2255drv.c

@@ -192,7 +192,7 @@ struct s2255_dmaqueue {
 #define S2255_FW_FAILED		3
 #define S2255_FW_DISCONNECTING  4
 
-#define S2255_FW_MARKER         0x22552f2f
+#define S2255_FW_MARKER		cpu_to_le32(0x22552f2f)
 /* 2255 read states */
 #define S2255_READ_IDLE         0
 #define S2255_READ_FRAME        1