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| author | Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> | 2007-05-02 14:48:32 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-04 17:59:08 -0700 |
| commit | eca28743b74736456bd75e0dabeb7d2df09fc03e (patch) | |
| tree | c7e24af40e3bda568a43bf119cdaad80f539594c /drivers/video/ps3fb.c | |
| parent | 1c0c8461191d6d74926397abe2aa5f7cc9fd5a67 (diff) | |
| download | lwn-eca28743b74736456bd75e0dabeb7d2df09fc03e.tar.gz lwn-eca28743b74736456bd75e0dabeb7d2df09fc03e.zip | |
ps3fb: atomic fixes
ps3fb: Use atomic_dec_if_positive() instead of bogus atomic_read()/atomic_dec()
combinations
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/ps3fb.c')
| -rw-r--r-- | drivers/video/ps3fb.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c index 815b3cc78fd3..dd6dd6e222d7 100644 --- a/drivers/video/ps3fb.c +++ b/drivers/video/ps3fb.c @@ -680,13 +680,10 @@ EXPORT_SYMBOL_GPL(ps3fb_wait_for_vsync); void ps3fb_flip_ctl(int on) { - if (on) { - if (atomic_read(&ps3fb.ext_flip) > 0) { - atomic_dec(&ps3fb.ext_flip); - } - } else { + if (on) + atomic_dec_if_positive(&ps3fb.ext_flip); + else atomic_inc(&ps3fb.ext_flip); - } } EXPORT_SYMBOL_GPL(ps3fb_flip_ctl); @@ -786,8 +783,7 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd, case PS3FB_IOCTL_OFF: DPRINTK("PS3FB_IOCTL_OFF:\n"); - if (atomic_read(&ps3fb.ext_flip) > 0) - atomic_dec(&ps3fb.ext_flip); + atomic_dec_if_positive(&ps3fb.ext_flip); retval = 0; break; |