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>

diff --git a/drivers/staging/rdma/hfi1/chip.c b/drivers/staging/rdma/hfi1/chip.c
index 654eafef1d30857ead08805911ba71797027028b..aa58e597df0698a4dc3e17d04662f565a5bafbbc 100644 (file)
--- 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);
        }