This is a note to let you know that I've just added the patch titled
can: ti_hecc: Fix napi poll return value for repoll
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
can-ti_hecc-fix-napi-poll-return-value-for-repoll.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f6c23b174c3c96616514827407769cbcfc8005cf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Oliver=20St=C3=A4bler?= <oliver.staebler@xxxxxxxxxxxxxx>
Date: Mon, 20 Nov 2017 14:45:15 +0100
Subject: can: ti_hecc: Fix napi poll return value for repoll
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From: Oliver Stäbler <oliver.staebler@xxxxxxxxxxxxxx>
commit f6c23b174c3c96616514827407769cbcfc8005cf upstream.
After commit d75b1ade567f ("net: less interrupt masking in NAPI") napi
repoll is done only when work_done == budget.
So we need to return budget if there are still packets to receive.
Signed-off-by: Oliver Stäbler <oliver.staebler@xxxxxxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/can/ti_hecc.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -652,6 +652,9 @@ static int ti_hecc_rx_poll(struct napi_s
mbx_mask = hecc_read(priv, HECC_CANMIM);
mbx_mask |= HECC_TX_MBOX_MASK;
hecc_write(priv, HECC_CANMIM, mbx_mask);
+ } else {
+ /* repoll is done only if whole budget is used */
+ num_pkts = quota;
}
return num_pkts;
Patches currently in stable-queue which might be from oliver.staebler@xxxxxxxxxxxxxx are
queue-4.9/can-ti_hecc-fix-napi-poll-return-value-for-repoll.patch