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authorDan Carpenter <dan.carpenter@oracle.com>2015-09-16 09:22:51 +0300
committerDoug Ledford <dledford@redhat.com>2015-09-18 11:28:47 -0400
commit951842b0540d2ed49ae29ba968adc496baf46556 (patch)
tree62a4d17e2063cf9a221098072a489413aaf95050 /drivers
parent50b19729ced72cfa8bb1c44fed9203f395f13991 (diff)
downloadlinux-951842b0540d2ed49ae29ba968adc496baf46556.tar.bz2
IB/hfi1: fix a locking bug
mutex_trylock() returns zero on failure, not EBUSY. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/staging/rdma/hfi1/chip.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/staging/rdma/hfi1/chip.c b/drivers/staging/rdma/hfi1/chip.c
index 654eafef1d30..aa58e597df06 100644
--- a/drivers/staging/rdma/hfi1/chip.c
+++ b/drivers/staging/rdma/hfi1/chip.c
@@ -2710,7 +2710,7 @@ int acquire_lcb_access(struct hfi1_devdata *dd, int sleep_ok)
if (sleep_ok) {
mutex_lock(&ppd->hls_lock);
} else {
- while (mutex_trylock(&ppd->hls_lock) == EBUSY)
+ while (!mutex_trylock(&ppd->hls_lock))
udelay(1);
}
@@ -2758,7 +2758,7 @@ int release_lcb_access(struct hfi1_devdata *dd, int sleep_ok)
if (sleep_ok) {
mutex_lock(&dd->pport->hls_lock);
} else {
- while (mutex_trylock(&dd->pport->hls_lock) == EBUSY)
+ while (!mutex_trylock(&dd->pport->hls_lock))
udelay(1);
}