Thread (4 messages) 4 messages, 3 authors, 2021-05-04

Re: [PATCH] can: mcp251x: Fix resume from sleep before interface was brought up

From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: 2021-05-04 18:49:10
Also in: linux-can, lkml, stable

On 04.05.2021 18:01:48, Schrempf Frieder wrote:
Since 8ce8c0abcba3 the driver queues work via priv->restart_work when
resuming after suspend, even when the interface was not previously
enabled. This causes a null dereference error as the workqueue is
only allocated and initialized in mcp251x_open().

To fix this we move the workqueue init to mcp251x_can_probe() as
there is no reason to do it later and repeat it whenever
mcp251x_open() is called.

Fixes: 8ce8c0abcba3 ("can: mcp251x: only reset hardware as required")
Cc: stable@vger.kernel.org
Signed-off-by: Frieder Schrempf <redacted>
Added to linux-can/testing.

Thanks,
Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde           |
Embedded Linux                   | https://www.pengutronix.de  |
Vertretung West/Dortmund         | Phone: +49-231-2826-924     |
Amtsgericht Hildesheim, HRA 2686 | Fax:   +49-5121-206917-5555 |

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