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errno: Allow errno_str() to be used without CONFIG_ERRNO_STR

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>
Simon Glass 8 years ago
parent
commit
862887d883
1 changed files with 5 additions and 0 deletions
  1. 5 0
      include/errno.h

+ 5 - 0
include/errno.h

@@ -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 */