Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: Return ENOSYS from sys32_syscall on 64bit kernels like elsewhere.
  MIPS: 64-bit: vmsplice needs to use the compat wrapper for o32 and N32.
  MIPS: o32: Fix number of arguments to splice(2).
  MIPS: Malta: Consolidate platform device code.
  MIPS: IP22, Fulong, Malta: Update defconfigs.
  MIPS: Malta: Add back RTC support
  MIPS: Fix potential DOS by untrusted user app.

arch/mips/kernel/scall32-o32.S

@@ -262,14 +262,11 @@ bad_alignment:
 	LEAF(sys_syscall)
 	subu	t0, a0, __NR_O32_Linux	# check syscall number
 	sltiu	v0, t0, __NR_O32_Linux_syscalls + 1
+	beqz	t0, einval		# do not recurse
 	sll	t1, t0, 3
 	beqz	v0, einval
-
 	lw	t2, sys_call_table(t1)		# syscall routine
 
-	li	v1, 4000 - __NR_O32_Linux	# index of sys_syscall
-	beq	t0, v1, einval			# do not recurse
-
 	/* Some syscalls like execve get their arguments from struct pt_regs
 	   and claim zero arguments in the syscall table. Thus we have to
 	   assume the worst case and shuffle around all potential arguments.
@@ -627,7 +624,7 @@ einval:	li	v0, -ENOSYS
 	sys	sys_pselect6		6
 	sys	sys_ppoll		5
 	sys	sys_unshare		1
-	sys	sys_splice		4
+	sys	sys_splice		6
 	sys	sys_sync_file_range	7	/* 4305 */
 	sys	sys_tee			4
 	sys	sys_vmsplice		4

arch/mips/kernel/scall64-n32.S

@@ -390,7 +390,7 @@ EXPORT(sysn32_call_table)
 	PTR	sys_splice
 	PTR	sys_sync_file_range
 	PTR	sys_tee
-	PTR	sys_vmsplice			/* 6270 */
+	PTR	compat_sys_vmsplice		/* 6270 */
 	PTR	sys_move_pages
 	PTR	compat_sys_set_robust_list
 	PTR	compat_sys_get_robust_list

arch/mips/kernel/scall64-o32.S

@@ -174,14 +174,12 @@ not_o32_scall:
 	END(handle_sys)
 
 LEAF(sys32_syscall)
-	sltu	v0, a0, __NR_O32_Linux + __NR_O32_Linux_syscalls + 1
+	subu	t0, a0, __NR_O32_Linux	# check syscall number
+	sltiu	v0, t0, __NR_O32_Linux_syscalls + 1
+	beqz	t0, einval		# do not recurse
+	dsll	t1, t0, 3
 	beqz	v0, einval
-
-	dsll	v0, a0, 3
-	ld	t2, (sys_call_table - (__NR_O32_Linux * 8))(v0)
-
-	li	v1, 4000		# indirect syscall number
-	beq	a0, v1, einval		# do not recurse
+	ld	t2, sys_call_table(t1)		# syscall routine
 
 	move	a0, a1			# shift argument registers
 	move	a1, a2
@@ -198,7 +196,7 @@ LEAF(sys32_syscall)
 	jr	t2
 	/* Unreached */
 
-einval:	li	v0, -EINVAL
+einval:	li	v0, -ENOSYS
 	jr	ra
 	END(sys32_syscall)
 
@@ -512,7 +510,7 @@ sys_call_table:
 	PTR	sys_splice
 	PTR	sys32_sync_file_range		/* 4305 */
 	PTR	sys_tee
-	PTR	sys_vmsplice
+	PTR	compat_sys_vmsplice
 	PTR	compat_sys_move_pages
 	PTR	compat_sys_set_robust_list
 	PTR	compat_sys_get_robust_list	/* 4310 */

arch/mips/mti-malta/Makefile

@@ -7,9 +7,8 @@
 #
 obj-y				:= malta-amon.o malta-cmdline.o \
 				   malta-display.o malta-init.o malta-int.o \
-				   malta-memory.o malta-mtd.o \
-				   malta-platform.o malta-reset.o \
-				   malta-setup.o malta-time.o
+				   malta-memory.o malta-platform.o \
+				   malta-reset.o malta-setup.o malta-time.o
 
 obj-$(CONFIG_EARLY_PRINTK)	+= malta-console.o
 obj-$(CONFIG_PCI)		+= malta-pci.o

arch/mips/mti-malta/malta-mtd.c

@@ -1,63 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2006 MIPS Technologies, Inc.
- *     written by Ralf Baechle <ralf@linux-mips.org>
- */
-
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/mtd/partitions.h>
-#include <linux/mtd/physmap.h>
-#include <mtd/mtd-abi.h>
-
-static struct mtd_partition malta_mtd_partitions[] = {
-	{
-		.name =		"YAMON",
-		.offset =	0x0,
-		.size =		0x100000,
-		.mask_flags =	MTD_WRITEABLE
-	}, {
-		.name =		"User FS",
-		.offset = 	0x100000,
-		.size =		0x2e0000
-	}, {
-		.name =		"Board Config",
-		.offset =	0x3e0000,
-		.size =		0x020000,
-		.mask_flags =	MTD_WRITEABLE
-	}
-};
-
-static struct physmap_flash_data malta_flash_data = {
-	.width		= 4,
-	.nr_parts	= ARRAY_SIZE(malta_mtd_partitions),
-	.parts		= malta_mtd_partitions
-};
-
-static struct resource malta_flash_resource = {
-	.start		= 0x1e000000,
-	.end		= 0x1e3fffff,
-	.flags		= IORESOURCE_MEM
-};
-
-static struct platform_device malta_flash = {
-	.name		= "physmap-flash",
-	.id		= 0,
-	.dev		= {
-		.platform_data	= &malta_flash_data,
-	},
-	.num_resources	= 1,
-	.resource	= &malta_flash_resource,
-};
-
-static int __init malta_mtd_init(void)
-{
-	platform_device_register(&malta_flash);
-
-	return 0;
-}
-
-module_init(malta_mtd_init)

arch/mips/mti-malta/malta-platform.c

@@ -3,10 +3,14 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2007 MIPS Technologies, Inc.
+ * Copyright (C) 2006, 07 MIPS Technologies, Inc.
  *   written by Ralf Baechle (ralf@linux-mips.org)
+ *     written by Ralf Baechle <ralf@linux-mips.org>
  *
- * Probe driver for the Malta's UART ports:
+ * Copyright (C) 2008 Wind River Systems, Inc.
+ *   updated by Tiejun Chen <tiejun.chen@windriver.com>
+ *
+ * 1. Probe driver for the Malta's UART ports:
  *
  *   o 2 ports in the SMC SuperIO
  *   o 1 port in the CBUS UART, a discrete 16550 which normally is only used
@@ -14,10 +18,17 @@
  *
  * We don't use 8250_platform.c on Malta as it would result in the CBUS
  * UART becoming ttyS0.
+ *
+ * 2. Register RTC-CMOS platform device on Malta.
  */
-#include <linux/module.h>
 #include <linux/init.h>
 #include <linux/serial_8250.h>
+#include <linux/mc146818rtc.h>
+#include <linux/module.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/platform_device.h>
+#include <mtd/mtd-abi.h>
 
 #define SMC_PORT(base, int)						\
 {									\
@@ -45,21 +56,93 @@ static struct plat_serial8250_port uart8250_data[] = {
 	{ },
 };
 
-static struct platform_device uart8250_device = {
+static struct platform_device malta_uart8250_device = {
 	.name			= "serial8250",
-	.id			= PLAT8250_DEV_PLATFORM2,
+	.id			= PLAT8250_DEV_PLATFORM,
 	.dev			= {
 		.platform_data	= uart8250_data,
 	},
 };
 
-static int __init uart8250_init(void)
+struct resource malta_rtc_resources[] = {
+	{
+		.start	= RTC_PORT(0),
+		.end	= RTC_PORT(7),
+		.flags	= IORESOURCE_IO,
+	}, {
+		.start	= RTC_IRQ,
+		.end	= RTC_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device malta_rtc_device = {
+	.name		= "rtc_cmos",
+	.id		= -1,
+	.resource	= malta_rtc_resources,
+	.num_resources	= ARRAY_SIZE(malta_rtc_resources),
+};
+
+static struct mtd_partition malta_mtd_partitions[] = {
+	{
+		.name =		"YAMON",
+		.offset =	0x0,
+		.size =		0x100000,
+		.mask_flags =	MTD_WRITEABLE
+	}, {
+		.name =		"User FS",
+		.offset = 	0x100000,
+		.size =		0x2e0000
+	}, {
+		.name =		"Board Config",
+		.offset =	0x3e0000,
+		.size =		0x020000,
+		.mask_flags =	MTD_WRITEABLE
+	}
+};
+
+static struct physmap_flash_data malta_flash_data = {
+	.width		= 4,
+	.nr_parts	= ARRAY_SIZE(malta_mtd_partitions),
+	.parts		= malta_mtd_partitions
+};
+
+static struct resource malta_flash_resource = {
+	.start		= 0x1e000000,
+	.end		= 0x1e3fffff,
+	.flags		= IORESOURCE_MEM
+};
+
+static struct platform_device malta_flash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &malta_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &malta_flash_resource,
+};
+
+static struct platform_device *malta_devices[] __initdata = {
+	&malta_uart8250_device,
+	&malta_rtc_device,
+	&malta_flash_device,
+};
+
+static int __init malta_add_devices(void)
 {
-	return platform_device_register(&uart8250_device);
-}
+	int err;
 
-module_init(uart8250_init);
+	err = platform_add_devices(malta_devices, ARRAY_SIZE(malta_devices));
+	if (err)
+		return err;
+
+	/*
+	 * Set RTC to BCD mode to support current alarm code.
+	 */
+	CMOS_WRITE(CMOS_READ(RTC_CONTROL) & ~RTC_DM_BINARY, RTC_CONTROL);
+
+	return 0;
+}
 
-MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("8250 UART probe driver for the Malta CBUS UART");
+device_initcall(malta_add_devices);