arch/sh/kernel/ftrace.c:50:9: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kernel test robot
Date: Mon Feb 01 2021 - 12:14:00 EST

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Hi Luc,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 1048ba83fb1c00cd24172e23e8263972f6b5d9ac
commit: e5fc436f06eef54ef512ea55a9db8eb9f2e76959 sparse: use static inline for __chk_{user,io}_ptr()
date: 5 months ago
config: sh-randconfig-s031-20210201 (attached as .config)
compiler: sh4-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-215-g0fb77bb6-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e5fc436f06eef54ef512ea55a9db8eb9f2e76959
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout e5fc436f06eef54ef512ea55a9db8eb9f2e76959
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=sh

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

"sparse warnings: (new ones prefixed by >>)"
>> arch/sh/kernel/ftrace.c:50:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned char * @@
arch/sh/kernel/ftrace.c:50:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/ftrace.c:50:9: sparse: got unsigned char *
arch/sh/kernel/ftrace.c:57:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned char * @@
arch/sh/kernel/ftrace.c:57:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/ftrace.c:57:9: sparse: got unsigned char *
--
>> arch/sh/kernel/cpu/sh3/clock-sh7712.c:23:21: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/kernel/cpu/sh3/clock-sh7712.c:23:21: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/sh3/clock-sh7712.c:23:21: sparse: got unsigned int
arch/sh/kernel/cpu/sh3/clock-sh7712.c:35:21: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/kernel/cpu/sh3/clock-sh7712.c:35:21: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/sh3/clock-sh7712.c:35:21: sparse: got unsigned int
arch/sh/kernel/cpu/sh3/clock-sh7712.c:47:21: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/kernel/cpu/sh3/clock-sh7712.c:47:21: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/sh3/clock-sh7712.c:47:21: sparse: got unsigned int
--
>> arch/sh/kernel/cpu/sh3/serial-sh7710.c:13:17: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/kernel/cpu/sh3/serial-sh7710.c:13:17: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/sh3/serial-sh7710.c:13:17: sparse: got unsigned int
>> arch/sh/kernel/cpu/sh3/serial-sh7710.c:13:17: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/kernel/cpu/sh3/serial-sh7710.c:13:17: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/sh3/serial-sh7710.c:13:17: sparse: got unsigned int
arch/sh/kernel/cpu/sh3/serial-sh7710.c:14:17: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/kernel/cpu/sh3/serial-sh7710.c:14:17: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/sh3/serial-sh7710.c:14:17: sparse: got unsigned int
arch/sh/kernel/cpu/sh3/serial-sh7710.c:14:17: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/kernel/cpu/sh3/serial-sh7710.c:14:17: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/sh3/serial-sh7710.c:14:17: sparse: got unsigned int
arch/sh/kernel/cpu/sh3/serial-sh7710.c:16:17: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/kernel/cpu/sh3/serial-sh7710.c:16:17: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/sh3/serial-sh7710.c:16:17: sparse: got unsigned int
arch/sh/kernel/cpu/sh3/serial-sh7710.c:16:17: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/kernel/cpu/sh3/serial-sh7710.c:16:17: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/sh3/serial-sh7710.c:16:17: sparse: got unsigned int
--
>> arch/sh/kernel/cpu/irq/ipr.c:35:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned long addr @@
arch/sh/kernel/cpu/irq/ipr.c:35:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/irq/ipr.c:35:9: sparse: got unsigned long addr
>> arch/sh/kernel/cpu/irq/ipr.c:35:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned long addr @@
arch/sh/kernel/cpu/irq/ipr.c:35:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/irq/ipr.c:35:9: sparse: got unsigned long addr
arch/sh/kernel/cpu/irq/ipr.c:36:15: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned long addr @@
arch/sh/kernel/cpu/irq/ipr.c:36:15: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/irq/ipr.c:36:15: sparse: got unsigned long addr
arch/sh/kernel/cpu/irq/ipr.c:44:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned long addr @@
arch/sh/kernel/cpu/irq/ipr.c:44:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/irq/ipr.c:44:9: sparse: got unsigned long addr
arch/sh/kernel/cpu/irq/ipr.c:44:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned long addr @@
arch/sh/kernel/cpu/irq/ipr.c:44:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/kernel/cpu/irq/ipr.c:44:9: sparse: got unsigned long addr
--
>> arch/sh/boards/mach-se/770x/irq.c:100:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/boards/mach-se/770x/irq.c:100:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/boards/mach-se/770x/irq.c:100:9: sparse: got unsigned int
arch/sh/boards/mach-se/770x/irq.c:101:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/boards/mach-se/770x/irq.c:101:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/boards/mach-se/770x/irq.c:101:9: sparse: got unsigned int
arch/sh/boards/mach-se/770x/irq.c:102:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/boards/mach-se/770x/irq.c:102:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/boards/mach-se/770x/irq.c:102:9: sparse: got unsigned int
arch/sh/boards/mach-se/770x/irq.c:103:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/boards/mach-se/770x/irq.c:103:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/boards/mach-se/770x/irq.c:103:9: sparse: got unsigned int
arch/sh/boards/mach-se/770x/irq.c:104:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/boards/mach-se/770x/irq.c:104:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/boards/mach-se/770x/irq.c:104:9: sparse: got unsigned int
arch/sh/boards/mach-se/770x/irq.c:105:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/boards/mach-se/770x/irq.c:105:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/boards/mach-se/770x/irq.c:105:9: sparse: got unsigned int
arch/sh/boards/mach-se/770x/irq.c:106:9: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected void const volatile [noderef] __iomem *ptr @@ got unsigned int @@
arch/sh/boards/mach-se/770x/irq.c:106:9: sparse: expected void const volatile [noderef] __iomem *ptr
arch/sh/boards/mach-se/770x/irq.c:106:9: sparse: got unsigned int
--
>> drivers/gpu/drm/tve200/tve200_display.c:33:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:33:16: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:33:16: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:50:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:50:23: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:50:23: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:60:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:60:17: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:60:17: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:65:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:65:9: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:65:9: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:220:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:220:9: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:220:9: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:234:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:234:9: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:234:9: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:252:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:252:17: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:252:17: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:257:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:257:25: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:257:25: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:259:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:259:25: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:259:25: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:282:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:282:9: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:282:9: sparse: got void *
drivers/gpu/drm/tve200/tve200_display.c:292:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_display.c:292:9: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_display.c:292:9: sparse: got void *
--
drivers/gpu/drm/tve200/tve200_drv.c:195:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *regs @@ got void [noderef] __iomem * @@
drivers/gpu/drm/tve200/tve200_drv.c:195:20: sparse: expected void *regs
drivers/gpu/drm/tve200/tve200_drv.c:195:20: sparse: got void [noderef] __iomem *
>> drivers/gpu/drm/tve200/tve200_drv.c:209:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *ptr @@ got void * @@
drivers/gpu/drm/tve200/tve200_drv.c:209:9: sparse: expected void const volatile [noderef] __iomem *ptr
drivers/gpu/drm/tve200/tve200_drv.c:209:9: sparse: got void *
--
drivers/vhost/vringh.c:567:18: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected restricted __virtio16 const *__gu_addr @@ got restricted __virtio16 [noderef] [usertype] __user * @@
drivers/vhost/vringh.c:567:18: sparse: expected restricted __virtio16 const *__gu_addr
drivers/vhost/vringh.c:567:18: sparse: got restricted __virtio16 [noderef] [usertype] __user *
>> drivers/vhost/vringh.c:567:18: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got restricted __virtio16 const *__gu_addr @@
drivers/vhost/vringh.c:567:18: sparse: expected void const volatile [noderef] __user *ptr
drivers/vhost/vringh.c:567:18: sparse: got restricted __virtio16 const *__gu_addr
--
drivers/video/fbdev/tmiofb.c:528:21: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned int const *__gu_addr @@ got unsigned int [noderef] [usertype] __user *argp @@
drivers/video/fbdev/tmiofb.c:528:21: sparse: expected unsigned int const *__gu_addr
drivers/video/fbdev/tmiofb.c:528:21: sparse: got unsigned int [noderef] [usertype] __user *argp
>> drivers/video/fbdev/tmiofb.c:528:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int const *__gu_addr @@
drivers/video/fbdev/tmiofb.c:528:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/video/fbdev/tmiofb.c:528:21: sparse: got unsigned int const *__gu_addr
--
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:719:21: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected int const *__gu_addr @@ got int [noderef] __user * @@
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:719:21: sparse: expected int const *__gu_addr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:719:21: sparse: got int [noderef] __user *
>> drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:719:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got int const *__gu_addr @@
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:719:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:719:21: sparse: got int const *__gu_addr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:755:21: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned int const *__gu_addr @@ got unsigned int [noderef] [usertype] __user * @@
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:755:21: sparse: expected unsigned int const *__gu_addr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:755:21: sparse: got unsigned int [noderef] [usertype] __user *
>> drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:755:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int const *__gu_addr @@
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:755:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:755:21: sparse: got unsigned int const *__gu_addr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:796:21: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected int const *__gu_addr @@ got int [noderef] __user * @@
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:796:21: sparse: expected int const *__gu_addr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:796:21: sparse: got int [noderef] __user *
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:796:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got int const *__gu_addr @@
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:796:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:796:21: sparse: got int const *__gu_addr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:811:21: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected int const *__gu_addr @@ got int [noderef] __user * @@
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:811:21: sparse: expected int const *__gu_addr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:811:21: sparse: got int [noderef] __user *
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:811:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got int const *__gu_addr @@
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:811:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:811:21: sparse: got int const *__gu_addr

vim +50 arch/sh/kernel/ftrace.c

fad57feba77d2e Matt Fleming 2008-11-12 28
9e28c46b7dd116 Matt Fleming 2009-06-10 29 static unsigned char ftrace_nop[4];
9e28c46b7dd116 Matt Fleming 2009-06-10 30 /*
9e28c46b7dd116 Matt Fleming 2009-06-10 31 * If we're trying to nop out a call to a function, we instead
9e28c46b7dd116 Matt Fleming 2009-06-10 32 * place a call to the address after the memory table.
9e28c46b7dd116 Matt Fleming 2009-06-10 33 *
9e28c46b7dd116 Matt Fleming 2009-06-10 34 * 8c011060 <a>:
9e28c46b7dd116 Matt Fleming 2009-06-10 35 * 8c011060: 02 d1 mov.l 8c01106c <a+0xc>,r1
9e28c46b7dd116 Matt Fleming 2009-06-10 36 * 8c011062: 22 4f sts.l pr,@-r15
9e28c46b7dd116 Matt Fleming 2009-06-10 37 * 8c011064: 02 c7 mova 8c011070 <a+0x10>,r0
9e28c46b7dd116 Matt Fleming 2009-06-10 38 * 8c011066: 2b 41 jmp @r1
9e28c46b7dd116 Matt Fleming 2009-06-10 39 * 8c011068: 2a 40 lds r0,pr
9e28c46b7dd116 Matt Fleming 2009-06-10 40 * 8c01106a: 09 00 nop
9e28c46b7dd116 Matt Fleming 2009-06-10 41 * 8c01106c: 68 24 .word 0x2468 <--- ip
9e28c46b7dd116 Matt Fleming 2009-06-10 42 * 8c01106e: 1d 8c .word 0x8c1d
9e28c46b7dd116 Matt Fleming 2009-06-10 43 * 8c011070: 26 4f lds.l @r15+,pr <--- ip + MCOUNT_INSN_SIZE
9e28c46b7dd116 Matt Fleming 2009-06-10 44 *
9e28c46b7dd116 Matt Fleming 2009-06-10 45 * We write 0x8c011070 to 0x8c01106c so that on entry to a() we branch
9e28c46b7dd116 Matt Fleming 2009-06-10 46 * past the _mcount call and continue executing code like normal.
9e28c46b7dd116 Matt Fleming 2009-06-10 47 */
9e28c46b7dd116 Matt Fleming 2009-06-10 48 static unsigned char *ftrace_nop_replace(unsigned long ip)
fad57feba77d2e Matt Fleming 2008-11-12 49 {
9e28c46b7dd116 Matt Fleming 2009-06-10 @50 __raw_writel(ip + MCOUNT_INSN_SIZE, ftrace_nop);
fad57feba77d2e Matt Fleming 2008-11-12 51 return ftrace_nop;
fad57feba77d2e Matt Fleming 2008-11-12 52 }
fad57feba77d2e Matt Fleming 2008-11-12 53

:::::: The code at line 50 was first introduced by commit
:::::: 9e28c46b7dd116a607ffb054c5545c468c77d779 sh: Fix dynamic ftrace's NOP action.

:::::: TO: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>
:::::: CC: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>

---
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