[PATCH 11/13] fs: fix unsigned enum warning with gcc-4.2

Arnd Bergmann
2016-12-16T10:55:42Z

With arm-linux-gcc-4.2, almost every file we build in the kernel ends
up with this warning:

include/linux/fs.h:2648: warning: comparison of unsigned expression < 0 is always false

Later versions don't have this problem, but it's easy enough to
work around.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
include/linux/fs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 398cf20a706d..782c2a292fd7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2645,7 +2645,7 @@ static const char * const kernel_read_file_str[] = {

static inline const char *kernel_read_file_id_str(enum kernel_read_file_id id)
{
- if (id < 0 || id >= READING_MAX_ID)
+ if ((unsigned)id >= READING_MAX_ID)
return kernel_read_file_str[READING_UNKNOWN];

return kernel_read_file_str[id];
--
2.9.0