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| author | Jeffrey Hugo <quic_jhugo@quicinc.com> | 2023-06-02 23:04:40 +0200 |
|---|---|---|
| committer | Jeffrey Hugo <quic_jhugo@quicinc.com> | 2023-06-09 19:07:28 +0200 |
| commit | 61d8cdb7872c82d8a4d5e5251b0010332c316a67 (patch) | |
| tree | 06132e7670ab11f7d8e8bade7eb172789eb388e1 /drivers | |
| parent | accel/qaic: Free user handle on interrupted mutex (diff) | |
| download | linux-61d8cdb7872c82d8a4d5e5251b0010332c316a67.tar.xz linux-61d8cdb7872c82d8a4d5e5251b0010332c316a67.zip | |
accel/qaic: Fix NULL pointer deref in qaic_destroy_drm_device()
If qaic_destroy_drm_device() is called before the device has fully
initialized it will cause a NULL pointer dereference as the drm device
has not yet been created. Fix this with a NULL check.
Fixes: c501ca23a6a3 ("accel/qaic: Add uapi and core driver file")
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230602210440.8411-3-quic_jhugo@quicinc.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/accel/qaic/qaic_drv.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/accel/qaic/qaic_drv.c b/drivers/accel/qaic/qaic_drv.c index 961cd341b414..b5ba550a0c04 100644 --- a/drivers/accel/qaic/qaic_drv.c +++ b/drivers/accel/qaic/qaic_drv.c @@ -225,6 +225,9 @@ static void qaic_destroy_drm_device(struct qaic_device *qdev, s32 partition_id) struct qaic_user *usr; qddev = qdev->qddev; + qdev->qddev = NULL; + if (!qddev) + return; /* * Existing users get unresolvable errors till they close FDs. |