From: Jakub Kicinski <jakub.kicinski@netronome.com>
Date: Wed, 11 Apr 2018 23:47:36 +0000 (-0700)
Subject: nfp: print a message when mutex wait is interrupted
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=bc05f9bcd8cb62f935625850e535da183b4a07c0;p=openwrt%2Fstaging%2Fblogic.git

nfp: print a message when mutex wait is interrupted

When waiting for an NFP mutex is interrupted print a message
to make root causing later error messages easier.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_mutex.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_mutex.c
index f7b958181126..cb28ac03e4ca 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_mutex.c
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_mutex.c
@@ -211,8 +211,11 @@ int nfp_cpp_mutex_lock(struct nfp_cpp_mutex *mutex)
 			break;
 
 		err = msleep_interruptible(timeout_ms);
-		if (err != 0)
+		if (err != 0) {
+			nfp_info(mutex->cpp,
+				 "interrupted waiting for NFP mutex\n");
 			return -ERESTARTSYS;
+		}
 
 		if (time_is_before_eq_jiffies(warn_at)) {
 			warn_at = jiffies + NFP_MUTEX_WAIT_NEXT_WARN * HZ;