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>
diff --git a/include/errno.h b/include/errno.h
index 3942681..15ece2f 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -15,5 +15,10 @@
#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 */