staging: ion: Prevent incorrect reference counting behavour
authorLee Jones <lee.jones@linaro.org>
Mon, 25 Apr 2022 15:51:54 +0000 (16:51 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 27 Apr 2022 11:50:50 +0000 (13:50 +0200)
commit27da8d16e4f0a0ef37da356599eb36adec542643
tree86558535a355b6ec14c3d77a48733151825f4aae
parentcb158b152ea6823ac4ba8ae313d5336c2e846b46
staging: ion: Prevent incorrect reference counting behavour

Supply additional check in order to prevent unexpected results.

Fixes: b892bf75b2034 ("ion: Switch ion to use dma-buf")
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/android/ion/ion.c