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nfp: print a message when mutex wait is interrupted

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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>
This commit is contained in:
Jakub Kicinski 2018-04-11 16:47:36 -07:00 committed by David S. Miller
parent 5496295aef
commit bc05f9bcd8
1 changed files with 4 additions and 1 deletions
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5
drivers/net/ethernet/netronome/nfp/nfpcore/nfp_mutex.c
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@ -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;