Patch "can: ti_hecc: Fix napi poll return value for repoll" has been added to the 4.14-stable tree

Patch "can: ti_hecc: Fix napi poll return value for repoll" has been added to the 4.14-stable tree

[gregkh]

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 4.14-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-4.14 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
@@ -637,6 +637,9 @@ 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-4.14/can-ti_hecc-fix-napi-poll-return-value-for-repoll.patch