platform/x86: alienware-wmi-wmax: Fix NULL pointer dereference in sleep handlers

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commit a49c4d48c3 upstream.

Devices without the AWCC interface don't initialize `awcc`. Add a check
before dereferencing it in sleep handlers.

Cc: stable@vger.kernel.org
Reported-by: Gal Hammer <galhammer@gmail.com>
Tested-by: Gal Hammer <galhammer@gmail.com>
Fixes: 07ac275981 ("platform/x86: alienware-wmi-wmax: Add support for manual fan control")
Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Link: https://patch.msgid.link/20251014-sleep-fix-v3-1-b5cb58da4638@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Kurt Borja 2025-10-14 05:07:27 -05:00 • committed by Greg Kroah-Hartman

parent 9aac08036a

commit 24c3812c9e

1 changed files with 2 additions and 2 deletions

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drivers/platform/x86/dell/alienware-wmi-wmax.c

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