]> err.no Git - linux-2.6/commit
ov7670: clean up ov7670_read semantics
authorAndres Salomon <dilinger@queued.net>
Sat, 12 Jul 2008 20:47:54 +0000 (13:47 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 12 Jul 2008 21:33:41 +0000 (14:33 -0700)
commitbca5c2c550f16d2dc2d21ffb7b4712bd0a7d32a9
tree5f37f9e04821f71443ca8b6a8d08a0006a1b895e
parent05d81d2222beec7b63ac8c1c8cdb5bb4f82c2bad
ov7670: clean up ov7670_read semantics

Cortland Setlow pointed out a bug in ov7670.c where the result from
ov7670_read() was just being checked for !0, rather than <0.  This made me
realize that ov7670_read's semantics were rather confusing; it both fills
in 'value' with the result, and returns it.  This is goes against general
kernel convention; so rather than fixing callers, let's fix the function.

This makes ov7670_read return <0 in the case of an error, and 0 upon
success. Thus, code like:

res = ov7670_read(...);
if (!res)
goto error;

..will work properly.

Signed-off-by: Cortland Setlow <csetlow@tower-research.com>
Signed-off-by: Andres Salomon <dilinger@debian.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/media/video/ov7670.c