drm: sti: hda: fix return value check in sti_hda_probe()

In case of error, the function devm_ioremap_nocache() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
index 72d957f..2802b81 100644 (file)
--- a/drivers/gpu/drm/sti/sti_hda.c
+++ b/drivers/gpu/drm/sti/sti_hda.c
@@ -730,16 +730,16 @@ static int sti_hda_probe(struct platform_device *pdev)
                return -ENOMEM;
        }
        hda->regs = devm_ioremap_nocache(dev, res->start, resource_size(res));
-       if (IS_ERR(hda->regs))
-               return PTR_ERR(hda->regs);
+       if (!hda->regs)
+               return -ENOMEM;
 
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
                        "video-dacs-ctrl");
        if (res) {
                hda->video_dacs_ctrl = devm_ioremap_nocache(dev, res->start,
                                resource_size(res));
-               if (IS_ERR(hda->video_dacs_ctrl))
-                       return PTR_ERR(hda->video_dacs_ctrl);
+               if (!hda->video_dacs_ctrl)
+                       return -ENOMEM;
        } else {
                /* If no existing video-dacs-ctrl resource continue the probe */
                DRM_DEBUG_DRIVER("No video-dacs-ctrl resource\n");