In case of error, the function mtk_mutex_get()
returns ERR_PTR() and never returns NULL. The NULL test in the
return value check should be replaced with IS_ERR().
And also fix the err_free_mutex case.
Fixes:
61890ccaefaf ("media: platform: mtk-mdp3: add MediaTek MDP3 driver")
Signed-off-by: Qiheng Lin <linqiheng@huawei.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
}
for (i = 0; i < MDP_PIPE_MAX; i++) {
mdp->mdp_mutex[i] = mtk_mutex_get(&mm_pdev->dev);
- if (!mdp->mdp_mutex[i]) {
- ret = -ENODEV;
+ if (IS_ERR(mdp->mdp_mutex[i])) {
+ ret = PTR_ERR(mdp->mdp_mutex[i]);
goto err_free_mutex;
}
}
mdp_comp_destroy(mdp);
err_free_mutex:
for (i = 0; i < MDP_PIPE_MAX; i++)
- mtk_mutex_put(mdp->mdp_mutex[i]);
+ if (!IS_ERR_OR_NULL(mdp->mdp_mutex[i]))
+ mtk_mutex_put(mdp->mdp_mutex[i]);
err_destroy_device:
kfree(mdp);
err_return: