[trivial PATCH 00/15] remove duplicate unlikely from IS_ERR

[trivial PATCH 00/15] remove duplicate unlikely from IS_ERR

[Joe Perches]

Tobias Klauser <tklauser@distanz.ch> sent a patch to remove
an unnecessary unlikely from drivers/misc/c2port/core.c,
https://lkml.org/lkml/2010/12/9/199

Here are the other instances treewide.

I think it'd be good if people would, when noticing defects in a
specific subsystem, look for and correct the same defect treewide.

IS_ERR already has an unlikely test so remove unnecessary
unlikelys from the call sites.

from: include/linux/err.h
#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
[...]
static inline long __must_check IS_ERR(const void *ptr)
{
	return IS_ERR_VALUE((unsigned long)ptr);
}

Sending directly to maintainers for now, will resend in a month
or so only to trivial if not picked up.
 
Joe Perches (15):
  drm: Remove duplicate unlikely from IS_ERR
  stmmac: Remove duplicate unlikely from IS_ERR
  rtc: Remove duplicate unlikely from IS_ERR
  s390: Remove duplicate unlikely from IS_ERR
  osd: Remove duplicate unlikely from IS_ERR
  serial: Remove duplicate unlikely from IS_ERR
  brcm80211: Remove duplicate unlikely from IS_ERR
  gadget: Remove duplicate unlikely from IS_ERR
  exofs: Remove duplicate unlikely from IS_ERR
  ext2: Remove duplicate unlikely from IS_ERR
  ext3: Remove duplicate unlikely from IS_ERR
  ext4: Remove duplicate unlikely from IS_ERR
  nfs: Remove duplicate unlikely from IS_ERR
  mm: Remove duplicate unlikely from IS_ERR
  ipv6: Remove duplicate unlikely from IS_ERR

 drivers/gpu/drm/ttm/ttm_tt.c                     |    4 ++--
 drivers/net/stmmac/stmmac_main.c                 |    2 +-
 drivers/rtc/rtc-bfin.c                           |    2 +-
 drivers/s390/scsi/zfcp_fsf.c                     |    4 ++--
 drivers/scsi/osd/osd_initiator.c                 |    2 +-
 drivers/serial/msm_serial.c                      |    2 +-
 drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c |    2 +-
 drivers/usb/gadget/f_fs.c                        |    4 ++--
 fs/exofs/super.c                                 |    2 +-
 fs/ext2/namei.c                                  |    2 +-
 fs/ext3/namei.c                                  |    2 +-
 fs/ext4/namei.c                                  |    2 +-
 fs/nfs/mount_clnt.c                              |    2 +-
 mm/vmalloc.c                                     |    2 +-
 net/ipv6/af_inet6.c                              |    2 +-
 15 files changed, 18 insertions(+), 18 deletions(-)

-- 
1.7.3.3.464.gf80b6

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[PATCH 01/15] drm: Remove duplicate unlikely from IS_ERR

[Joe Perches]

IS_ERR already uses unlikely, remove unlikely from the call sites.

Signed-off-by: Joe Perches <joe@perches.com>
---
 drivers/gpu/drm/ttm/ttm_tt.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index af789dc..fb83a90 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -538,7 +538,7 @@ int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistant_swap_storage)
 		swap_storage = shmem_file_setup("ttm swap",
 						ttm->num_pages << PAGE_SHIFT,
 						0);
-		if (unlikely(IS_ERR(swap_storage))) {
+		if (IS_ERR(swap_storage)) {
 			printk(KERN_ERR "Failed allocating swap storage.\n");
 			return PTR_ERR(swap_storage);
 		}
@@ -552,7 +552,7 @@ int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistant_swap_storage)
 		if (unlikely(from_page == NULL))
 			continue;
 		to_page = read_mapping_page(swap_space, i, NULL);
-		if (unlikely(IS_ERR(to_page))) {
+		if (IS_ERR(to_page)) {
 			ret = PTR_ERR(to_page);
 			goto out_err;
 		}
-- 
1.7.3.3.464.gf80b6

Re: [trivial PATCH 00/15] remove duplicate unlikely from IS_ERR

[Joe Perches]

On Thu, 2010-12-09 at 12:03 -0800, Joe Perches wrote:
> Tobias Klauser <tklauser@distanz.ch> sent a patch to remove
> an unnecessary unlikely from drivers/misc/c2port/core.c,
> https://lkml.org/lkml/2010/12/9/199

It seems that Tobias did send all the appropriate patches,
not as a series, but as individual patches to kernel-janitor.

c2port was the only one that went to lkml.

Please ignore this series and apply Tobias' patches.


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