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ALSA: echoaudio: add a check for ioremap_nocache
authorKangjie Lu <kjlu@umn.edu>
Fri, 15 Mar 2019 03:58:29 +0000 (22:58 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 20 Apr 2019 07:15:55 +0000 (09:15 +0200)
commit17829309ec00adf3dba1644d64b09a5329829870
treea54c3a9e0f3ded76db1d9b7aa4b68c92be93caaftree | snapshot
parenta793860c0f52f28d0d5f052a20981057eb9fb9f1commit | diff
ALSA: echoaudio: add a check for ioremap_nocache

[ Upstream commit 6ade657d6125ec3ec07f95fa51e28138aef6208f ]

In case ioremap_nocache fails, the fix releases chip and returns
an error code upstream to avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
sound/pci/echoaudio/echoaudio.c diff | blob | history
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