[PATCH net 2/4] nfp: print a message when mutex wait is interrupted

[Jakub Kicinski]

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.kicin...@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vanderme...@netronome.com>
---
 drivers/net/ethernet/netronome/nfp/nfpcore/nfp_mutex.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

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;
-- 
2.16.2