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cmd: disk: Fix unused variable warning 

If serial support is not compiled into U-Boot, which may be the case
for some SPL builds, the following warning will be generated in disk.c:

cmd/disk.c: In function 'common_diskboot':
cmd/disk.c:16:6: warning: variable 'dev' set but not used [-Wunused-but-set-variable]
  int dev, part;
      ^
The warning is a result of printf() calls being optimized away, and
thus the whole dev variable becomes indeed unused. Mark the variable
as __maybe_unused .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Marek Vasut 2016-05-01 00:35:54 +02:00 committed by Tom Rini
parent 90a7417602
commit 04681cb3a4
1 changed files with 2 additions and 1 deletions
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3
cmd/disk.c
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@ -13,7 +13,8 @@
int common_diskboot(cmd_tbl_t *cmdtp, const char *intf, int argc, int common_diskboot(cmd_tbl_t *cmdtp, const char *intf, int argc,
char *const argv[]) char *const argv[])
{ {
int dev, part; __maybe_unused int dev;
int part;
ulong addr = CONFIG_SYS_LOAD_ADDR; ulong addr = CONFIG_SYS_LOAD_ADDR;
ulong cnt; ulong cnt;
disk_partition_t info; disk_partition_t info;