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errno: Allow errno_str() to be used without CONFIG_ERRNO_STR

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The pmic framework uses errno_str() and this requires board that use it to
enable CONFIG_ERRNO_STR to avoid a build error. Update the header to provide
a NULL error message when CONFIG_ERRNO_STR is not defined, and fix the build
error.

This will show as "(null)" when U-Boot prints it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Simon Glass 2016-05-08 16:55:18 -06:00 committed by Tom Warren
parent 00e9e6d1ff
commit 862887d883
1 changed files with 5 additions and 0 deletions
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5
include/errno.h
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@ -15,5 +15,10 @@ extern int errno;
#ifdef CONFIG_ERRNO_STR
const char *errno_str(int errno);
#else
static inline const char *errno_str(int errno)
{
return 0;
}
#endif
#endif /* _ERRNO_H */