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From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com,
	kuba@kernel.org, pabeni@redhat.com
Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Subject: [PATCH net v3 2/2] net: ravb: Fix possible hang if RIS2_QFF1 happen
Date: Tue, 24 Jan 2023 09:02:11 +0900	[thread overview]
Message-ID: <20230124000211.1426624-3-yoshihiro.shimoda.uh@renesas.com> (raw)
In-Reply-To: <20230124000211.1426624-1-yoshihiro.shimoda.uh@renesas.com>

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>
---
 drivers/net/ethernet/renesas/ravb_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 3f61100c02f4..0f54849a3823 100644
--- 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++;
 
-- 
2.25.1


  parent reply	other threads:[~2023-01-24  0:02 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-24  0:02 [PATCH net v3 0/2] net: ravb: Fix potential issues Yoshihiro Shimoda
2023-01-24  0:02 ` [PATCH net v3 1/2] net: ravb: Fix lack of register setting after system resumed for Gen3 Yoshihiro Shimoda
2023-01-24  0:02 ` Yoshihiro Shimoda [this message]
2023-01-25 13:10 ` [PATCH net v3 0/2] net: ravb: Fix potential issues patchwork-bot+netdevbpf

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