diff options
| author | YueHaibing <yuehaibing@huawei.com> | 2018-12-17 17:18:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-27 14:46:12 +0100 |
| commit | f5ed3f2b4b72f584e639863ecbac090c622f0ffc (patch) | |
| tree | a822725489407efcd122d3251931a4bb261ec394 /drivers/gpu/drm | |
| parent | 346e59489df79cb0e1dd2647560b6e64a3c0bbb2 (diff) | |
drm/shmob: Fix return value check in shmob_drm_probe
[ Upstream commit 06c3bbd3c12737a50c2e981821b5585e1786e73d ]
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Fixes: 8f1597c8f1a5 ("drm: shmobile: Perform initialization/cleanup at probe/remove time")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/shmobile/shmob_drm_drv.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c index 592572554eb0..58d8a98c749b 100644 --- a/drivers/gpu/drm/shmobile/shmob_drm_drv.c +++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c @@ -233,8 +233,8 @@ static int shmob_drm_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); sdev->mmio = devm_ioremap_resource(&pdev->dev, res); - if (sdev->mmio == NULL) - return -ENOMEM; + if (IS_ERR(sdev->mmio)) + return PTR_ERR(sdev->mmio); ret = shmob_drm_setup_clocks(sdev, pdata->clk_source); if (ret < 0) |