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author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-11-10 16:29:29 +0100 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-23 20:12:29 +0100 |
commit | ad90d0358bd3b4554f243a425168fc7cebe7d04e (patch) | |
tree | 9eaac8d58cb44b33bbb456a474f79b7f9c63855b /drivers/tty/serial/sccnxp.c | |
parent | Linux 6.7-rc2 (diff) | |
download | linux-ad90d0358bd3b4554f243a425168fc7cebe7d04e.tar.xz linux-ad90d0358bd3b4554f243a425168fc7cebe7d04e.zip |
serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed
Returning an error code from .remove() makes the driver core emit the
little helpful error message:
remove callback returned a non-zero value. This will be ignored.
and then remove the device anyhow. So all resources that were not freed
are leaked in this case. Skipping serial8250_unregister_port() has the
potential to keep enough of the UART around to trigger a use-after-free.
So replace the error return (and with it the little helpful error
message) by a more useful error message and continue to cleanup.
Fixes: e3f0c638f428 ("serial: 8250: omap: Fix unpaired pm_runtime_put_sync() in omap8250_remove()")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20231110152927.70601-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions