Bluetooth: qca: fix NULL-deref on non-serdev suspend

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commit 73e87c0a49 upstream.

Qualcomm ROME controllers can be registered from the Bluetooth line
discipline and in this case the HCI UART serdev pointer is NULL.

Add the missing sanity check to prevent a NULL-pointer dereference when
wakeup() is called for a non-serdev controller during suspend.

Just return true for now to restore the original behaviour and address
the crash with pre-6.2 kernels, which do not have commit e9b3e5b8c6
("Bluetooth: hci_qca: only assign wakeup with serial port support") that
causes the crash to happen already at setup() time.

Fixes: c1a74160ea ("Bluetooth: hci_qca: Add device_may_wakeup support")
Cc: stable@vger.kernel.org      # 5.13
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Johan Hovold 2024-04-22 15:57:47 +02:00 • committed by Greg Kroah-Hartman

parent e0813f22c3

commit 6b47cdeb78

1 changed files with 3 additions and 0 deletions

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drivers/bluetooth/hci_qca.c

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