bna: Semaphore Lock Fix
Remove a BUG_ON() as it is not required.
Change the unconditional write to release a semaphore to read sem first
and then write. This will eliminate the possibility of sem getting locked
while trying to release it in case if previous sem_get operation failed.
Signed-off-by: Gurunatha Karaje <gkaraje@brocade.com>
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/brocade/bna/bfa_ioc.c b/drivers/net/ethernet/brocade/bna/bfa_ioc.c
index 029fb52..4282fef 100644
--- a/drivers/net/ethernet/brocade/bna/bfa_ioc.c
+++ b/drivers/net/ethernet/brocade/bna/bfa_ioc.c
@@ -1201,13 +1201,13 @@
if (!(r32 & 1))
return true;
- BUG_ON(!(cnt < BFA_SEM_SPINCNT));
return false;
}
void
bfa_nw_ioc_sem_release(void __iomem *sem_reg)
{
+ readl(sem_reg);
writel(1, sem_reg);
}