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%3Ba=su...

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@vger.kernel.org know about it.

From f6c23b174c3c96616514827407769cbcfc8005cf Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Oliver=20St=C3=A4bler?= oliver.staebler@bytesatwork.ch Date: Mon, 20 Nov 2017 14:45:15 +0100 Subject: can: ti_hecc: Fix napi poll return value for repoll MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

From: Oliver Stäbler oliver.staebler@bytesatwork.ch

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@bytesatwork.ch Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- 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@bytesatwork.ch are

queue-4.9/can-ti_hecc-fix-napi-poll-return-value-for-repoll.patch