staging: drm/imx: several bug fixes

- convert bogus IS_ERR_OR_NULL() to IS_ERR()
- fix copy/paste error
- check return value of ipu_crtc_init()

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/staging/imx-drm/ipuv3-crtc.c b/drivers/staging/imx-drm/ipuv3-crtc.c
index 1892006526b5..4b3a019409b5 100644
--- a/drivers/staging/imx-drm/ipuv3-crtc.c
+++ b/drivers/staging/imx-drm/ipuv3-crtc.c
@@ -452,7 +452,7 @@ static int ipu_get_resources(struct ipu_crtc *ipu_crtc,
         int ret;
 
         ipu_crtc->ipu_ch = ipu_idmac_get(ipu, pdata->dma[0]);
-        if (IS_ERR_OR_NULL(ipu_crtc->ipu_ch)) {
+        if (IS_ERR(ipu_crtc->ipu_ch)) {
                 ret = PTR_ERR(ipu_crtc->ipu_ch);
                 goto err_out;
         }
@@ -472,7 +472,7 @@ static int ipu_get_resources(struct ipu_crtc *ipu_crtc,
         if (pdata->dp >= 0) {
                 ipu_crtc->dp = ipu_dp_get(ipu, pdata->dp);
                 if (IS_ERR(ipu_crtc->dp)) {
-                        ret = PTR_ERR(ipu_crtc->ipu_ch);
+                        ret = PTR_ERR(ipu_crtc->dp);
                         goto err_out;
                 }
         }
@@ -548,6 +548,8 @@ static int ipu_drm_probe(struct platform_device *pdev)
         ipu_crtc->dev = &pdev->dev;
 
         ret = ipu_crtc_init(ipu_crtc, pdata);
+        if (ret)
+                return ret;
 
         platform_set_drvdata(pdev, ipu_crtc);