ide: fix ->init_chipset method to return 'int' value

* Return 0 instead of dev->irq in ->init_chipset implementations.

* Fix ->init_chipset method to return 'int' value instead of
  'unsigned int' one.

This fixes ->init_chipset handling for host drivers (cs5530, hpt366
and pdc202xx_new) for which it is possible for this method to fail.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/aec62xx.c

@@ -139,7 +139,7 @@ static void aec_set_pio_mode(ide_drive_t *drive, const u8 pio)
 	drive->hwif->port_ops->set_dma_mode(drive, pio + XFER_PIO_0);
 }
 
-static unsigned int init_chipset_aec62xx(struct pci_dev *dev)
+static int init_chipset_aec62xx(struct pci_dev *dev)
 {
 	/* These are necessary to get AEC6280 Macintosh cards to work */
 	if ((dev->device == PCI_DEVICE_ID_ARTOP_ATP865) ||
@@ -156,7 +156,7 @@ static unsigned int init_chipset_aec62xx(struct pci_dev *dev)
 		pci_write_config_byte(dev, 0x4a, reg4ah | 0x80);
 	}
 
-	return dev->irq;
+	return 0;
 }
 
 static u8 atp86x_cable_detect(ide_hwif_t *hwif)

drivers/ide/alim15x3.c

@@ -212,7 +212,7 @@ static int ali15x3_dma_setup(ide_drive_t *drive)
  *	appropriate also sets up the 1533 southbridge.
  */
 
-static unsigned int init_chipset_ali15x3(struct pci_dev *dev)
+static int init_chipset_ali15x3(struct pci_dev *dev)
 {
 	unsigned long flags;
 	u8 tmpbyte;

drivers/ide/amd74xx.c

@@ -140,7 +140,7 @@ static void amd7411_cable_detect(struct pci_dev *dev)
  * The initialization callback.  Initialize drive independent registers.
  */
 
-static unsigned int init_chipset_amd74xx(struct pci_dev *dev)
+static int init_chipset_amd74xx(struct pci_dev *dev)
 {
 	u8 t = 0, offset = amd_offset(dev);
 
@@ -172,7 +172,7 @@ static unsigned int init_chipset_amd74xx(struct pci_dev *dev)
 		t |= 0xf0;
 	pci_write_config_byte(dev, AMD_IDE_CONFIG + offset, t);
 
-	return dev->irq;
+	return 0;
 }
 
 static u8 amd_cable_detect(ide_hwif_t *hwif)

drivers/ide/cmd64x.c

@@ -333,7 +333,7 @@ static int cmd646_1_dma_end(ide_drive_t *drive)
 	return (dma_stat & 7) != 4;
 }
 
-static unsigned int init_chipset_cmd64x(struct pci_dev *dev)
+static int init_chipset_cmd64x(struct pci_dev *dev)
 {
 	u8 mrdmode = 0;
 

drivers/ide/cs5530.c

@@ -135,7 +135,7 @@ static void cs5530_set_dma_mode(ide_drive_t *drive, const u8 mode)
  *	Initialize the cs5530 bridge for reliable IDE DMA operation.
  */
 
-static unsigned int init_chipset_cs5530(struct pci_dev *dev)
+static int init_chipset_cs5530(struct pci_dev *dev)
 {
 	struct pci_dev *master_0 = NULL, *cs5530_0 = NULL;
 

drivers/ide/delkin_cb.c

@@ -46,7 +46,7 @@ static const struct ide_port_ops delkin_cb_port_ops = {
 	.quirkproc		= ide_undecoded_slave,
 };
 
-static unsigned int delkin_cb_init_chipset(struct pci_dev *dev)
+static int delkin_cb_init_chipset(struct pci_dev *dev)
 {
 	unsigned long base = pci_resource_start(dev, 0);
 	int i;

drivers/ide/hpt366.c

@@ -995,7 +995,7 @@ static void hpt3xx_disable_fast_irq(struct pci_dev *dev, u8 mcr_addr)
 		pci_write_config_byte(dev, mcr_addr + 1, new_mcr);
 }
 
-static unsigned int init_chipset_hpt366(struct pci_dev *dev)
+static int init_chipset_hpt366(struct pci_dev *dev)
 {
 	unsigned long io_base	= pci_resource_start(dev, 4);
 	struct hpt_info *info	= hpt3xx_get_info(&dev->dev);
@@ -1237,7 +1237,7 @@ static unsigned int init_chipset_hpt366(struct pci_dev *dev)
 	hpt3xx_disable_fast_irq(dev, 0x50);
 	hpt3xx_disable_fast_irq(dev, 0x54);
 
-	return dev->irq;
+	return 0;
 }
 
 static u8 hpt3xx_cable_detect(ide_hwif_t *hwif)

drivers/ide/it821x.c

@@ -603,7 +603,7 @@ static void it8212_disable_raid(struct pci_dev *dev)
 	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20);
 }
 
-static unsigned int init_chipset_it821x(struct pci_dev *dev)
+static int init_chipset_it821x(struct pci_dev *dev)
 {
 	u8 conf;
 	static char *mode[2] = { "pass through", "smart" };

drivers/ide/pdc202xx_new.c

@@ -325,7 +325,7 @@ static void apple_kiwi_init(struct pci_dev *pdev)
 }
 #endif /* CONFIG_PPC_PMAC */
 
-static unsigned int init_chipset_pdcnew(struct pci_dev *dev)
+static int init_chipset_pdcnew(struct pci_dev *dev)
 {
 	const char *name = DRV_NAME;
 	unsigned long dma_base = pci_resource_start(dev, 4);
@@ -444,7 +444,7 @@ static unsigned int init_chipset_pdcnew(struct pci_dev *dev)
 #endif
 
  out:
-	return dev->irq;
+	return 0;
 }
 
 static struct pci_dev * __devinit pdc20270_get_dev2(struct pci_dev *dev)

drivers/ide/pdc202xx_old.c

@@ -264,7 +264,7 @@ static void pdc202xx_dma_timeout(ide_drive_t *drive)
 	ide_dma_timeout(drive);
 }
 
-static unsigned int init_chipset_pdc202xx(struct pci_dev *dev)
+static int init_chipset_pdc202xx(struct pci_dev *dev)
 {
 	unsigned long dmabase = pci_resource_start(dev, 4);
 	u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
@@ -290,7 +290,7 @@ static unsigned int init_chipset_pdc202xx(struct pci_dev *dev)
 		printk("%sACTIVE\n", (inb(dmabase | 0x1f) & 1) ? "" : "IN");
 	}
 out:
-	return dev->irq;
+	return 0;
 }
 
 static void __devinit pdc202ata4_fixup_irq(struct pci_dev *dev,

drivers/ide/piix.c

@@ -204,7 +204,7 @@ static void piix_set_dma_mode(ide_drive_t *drive, const u8 speed)
  *	out to be nice and simple.
  */
 
-static unsigned int init_chipset_ich(struct pci_dev *dev)
+static int init_chipset_ich(struct pci_dev *dev)
 {
 	u32 extra = 0;
 

drivers/ide/serverworks.c

@@ -175,7 +175,7 @@ static void svwks_set_dma_mode(ide_drive_t *drive, const u8 speed)
 	pci_write_config_byte(dev, 0x54, ultra_enable);
 }
 
-static unsigned int init_chipset_svwks(struct pci_dev *dev)
+static int init_chipset_svwks(struct pci_dev *dev)
 {
 	unsigned int reg;
 	u8 btr;
@@ -270,7 +270,7 @@ static unsigned int init_chipset_svwks(struct pci_dev *dev)
 		pci_write_config_byte(dev, 0x5A, btr);
 	}
 
-	return dev->irq;
+	return 0;
 }
 
 static u8 ata66_svwks_svwks(ide_hwif_t *hwif)

drivers/ide/setup-pci.c

@@ -524,7 +524,7 @@ static int do_ide_setup_pci_device(struct pci_dev *dev,
 		if (noisy)
 			printk(KERN_INFO "%s %s: not 100%% native mode: will "
 				"probe irqs later\n", d->name, pci_name(dev));
-		pciirq = ret;
+		pciirq = 0;
 	} else if (!pciirq && noisy) {
 		printk(KERN_WARNING "%s %s: bad irq (%d): will probe later\n",
 			d->name, pci_name(dev), pciirq);

drivers/ide/siimage.c

@@ -464,7 +464,7 @@ static void sil_sata_pre_reset(ide_drive_t *drive)
  *	to 133 MHz clocking if the system isn't already set up to do it.
  */
 
-static unsigned int init_chipset_siimage(struct pci_dev *dev)
+static int init_chipset_siimage(struct pci_dev *dev)
 {
 	struct ide_host *host = pci_get_drvdata(dev);
 	void __iomem *ioaddr = host->host_priv;

drivers/ide/sis5513.c

@@ -447,7 +447,7 @@ static int __devinit sis_find_family(struct pci_dev *dev)
 	return chipset_family;
 }
 
-static unsigned int init_chipset_sis5513(struct pci_dev *dev)
+static int init_chipset_sis5513(struct pci_dev *dev)
 {
 	/* Make general config ops here
 	   1/ tell IDE channels to operate in Compatibility mode only

drivers/ide/sl82c105.c

@@ -271,7 +271,7 @@ static u8 sl82c105_bridge_revision(struct pci_dev *dev)
  * channel 0 here at least, but channel 1 has to be enabled by
  * firmware or arch code. We still set both to 16 bits mode.
  */
-static unsigned int init_chipset_sl82c105(struct pci_dev *dev)
+static int init_chipset_sl82c105(struct pci_dev *dev)
 {
 	u32 val;
 
@@ -281,7 +281,7 @@ static unsigned int init_chipset_sl82c105(struct pci_dev *dev)
 	val |= CTRL_P0EN | CTRL_P0F16 | CTRL_P1F16;
 	pci_write_config_dword(dev, 0x40, val);
 
-	return dev->irq;
+	return 0;
 }
 
 static const struct ide_port_ops sl82c105_port_ops = {

drivers/ide/via82cxxx.c

@@ -267,7 +267,7 @@ static void via_cable_detect(struct via82cxxx_dev *vdev, u32 u)
  *	and initialize its drive independent registers.
  */
 
-static unsigned int init_chipset_via82cxxx(struct pci_dev *dev)
+static int init_chipset_via82cxxx(struct pci_dev *dev)
 {
 	struct ide_host *host = pci_get_drvdata(dev);
 	struct via82cxxx_dev *vdev = host->host_priv;

include/linux/ide.h

@@ -851,7 +851,7 @@ struct ide_host {
 	ide_hwif_t	*ports[MAX_HOST_PORTS + 1];
 	unsigned int	n_ports;
 	struct device	*dev[2];
-	unsigned int	(*init_chipset)(struct pci_dev *);
+	int		(*init_chipset)(struct pci_dev *);
 	irq_handler_t	irq_handler;
 	unsigned long	host_flags;
 	void		*host_priv;
@@ -1361,7 +1361,7 @@ enum {
 
 struct ide_port_info {
 	char			*name;
-	unsigned int		(*init_chipset)(struct pci_dev *);
+	int			(*init_chipset)(struct pci_dev *);
 	void			(*init_iops)(ide_hwif_t *);
 	void                    (*init_hwif)(ide_hwif_t *);
 	int			(*init_dma)(ide_hwif_t *,