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author | 2014-06-06 14:37:22 -0700 | |
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committer | 2014-06-06 16:08:13 -0700 | |
commit | d55875f5d52c067e2eff7536368596b4a96b3ade (patch) | |
tree | 7b94eab94b55b5f513df133e6d19262f8445b9fd /fs/affs | |
parent | kernel/user_namespace.c: kernel-doc/checkpatch fixes (diff) | |
download | linux-d55875f5d52c067e2eff7536368596b4a96b3ade.tar.gz linux-d55875f5d52c067e2eff7536368596b4a96b3ade.tar.bz2 linux-d55875f5d52c067e2eff7536368596b4a96b3ade.zip |
include/asm-generic/ioctl.h: fix _IOC_TYPECHECK sparse error
When running sparse over drivers/media/v4l2-core/v4l2-ioctl.c I get these
errors:
drivers/media/v4l2-core/v4l2-ioctl.c:2043:9: error: bad integer constant expression
drivers/media/v4l2-core/v4l2-ioctl.c:2044:9: error: bad integer constant expression
drivers/media/v4l2-core/v4l2-ioctl.c:2045:9: error: bad integer constant expression
drivers/media/v4l2-core/v4l2-ioctl.c:2046:9: error: bad integer constant expression
etc.
The root cause of that turns out to be in include/asm-generic/ioctl.h:
#include <uapi/asm-generic/ioctl.h>
/* provoke compile error for invalid uses of size argument */
extern unsigned int __invalid_size_argument_for_IOC;
#define _IOC_TYPECHECK(t) \
((sizeof(t) == sizeof(t[1]) && \
sizeof(t) < (1 << _IOC_SIZEBITS)) ? \
sizeof(t) : __invalid_size_argument_for_IOC)
If it is defined as this (as is already done if __KERNEL__ is not defined):
#define _IOC_TYPECHECK(t) (sizeof(t))
then all is well with the world.
This patch allows sparse to work correctly.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/affs')
0 files changed, 0 insertions, 0 deletions