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Subject[PATCH 15/19] sunrpc: don't warn for unused variable 'buf'
Date
When RPC_DEBUG is unset, the dprintk() macro does nothing,
causing the 'buf' variable in svc_printk to become unused.
Marking it as __maybe_unused avoids a harmless gcc warning.

Without this patch, building at91_dt_defconfig results in:

net/sunrpc/svc.c: In function 'svc_printk':
net/sunrpc/svc.c:1051:7: warning: unused variable 'buf' [-Wunused-variable]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: "J. Bruce Fields" <bfields@redhat.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: linux-nfs@vger.kernel.org
Cc: netdev@vger.kernel.org
---
net/sunrpc/svc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index dbf12ac..b1f5223 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -1047,7 +1047,7 @@ void svc_printk(struct svc_rqst *rqstp, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
- char buf[RPC_MAX_ADDRBUFLEN];
+ char buf[RPC_MAX_ADDRBUFLEN] __maybe_unused;

va_start(args, fmt);

--
1.8.0


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