net: ravb: Fix possible hang if RIS2_QFF1 happen

Since this driver enables the interrupt by RIC2_QFE1, this driver
should clear the interrupt flag if it happens. Otherwise, the interrupt
causes to hang the system.

Note that this also fix a minor coding style (a comment indentation)
around the fixed code.

Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 3f61100c02f4f1864bc955259e1d1a3c427a822a..0f54849a38235fe7e564f7fe870d501201f6fbc5 100644 (file)
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -1101,14 +1101,14 @@ static void ravb_error_interrupt(struct net_device *ndev)
        ravb_write(ndev, ~(EIS_QFS | EIS_RESERVED), EIS);
        if (eis & EIS_QFS) {
                ris2 = ravb_read(ndev, RIS2);
-               ravb_write(ndev, ~(RIS2_QFF0 | RIS2_RFFF | RIS2_RESERVED),
+               ravb_write(ndev, ~(RIS2_QFF0 | RIS2_QFF1 | RIS2_RFFF | RIS2_RESERVED),
                           RIS2);
 
                /* Receive Descriptor Empty int */
                if (ris2 & RIS2_QFF0)
                        priv->stats[RAVB_BE].rx_over_errors++;
 
-                   /* Receive Descriptor Empty int */
+               /* Receive Descriptor Empty int */
                if (ris2 & RIS2_QFF1)
                        priv->stats[RAVB_NC].rx_over_errors++;