diff options
| -rw-r--r-- | drivers/block/mtip32xx/mtip32xx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index cd271d5e1b7..29735316730 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -970,6 +970,8 @@ static inline void mtip_process_sdbf(struct driver_data *dd) /* walk all bits in all slot groups */ for (group = 0; group < dd->slot_groups; group++) { completed = readl(port->completed[group]); + if (!completed) + continue; /* clear completed status register in the hardware.*/ writel(completed, port->completed[group]); |