dmaengine: fsl-edma: fix wrong pointer check in fsl_edma3_attach_pd()

[ Upstream commit bffa7218dcddb80e7f18dfa545dd4b359b11dd93 ]

device_link_add() returns NULL pointer not PTR_ERR() when it fails,
so replace the IS_ERR() check with NULL pointer check.

Fixes: 72f5801a4e2b ("dmaengine: fsl-edma: integrate v3 support")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20231129090000.841440-1-yangyingliang@huaweicloud.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c
index db6cd84..00cb70a 100644 (file)
--- a/drivers/dma/fsl-edma-main.c
+++ b/drivers/dma/fsl-edma-main.c
@@ -400,9 +400,8 @@ static int fsl_edma3_attach_pd(struct platform_device *pdev, struct fsl_edma_eng
                link = device_link_add(dev, pd_chan, DL_FLAG_STATELESS |
                                             DL_FLAG_PM_RUNTIME |
                                             DL_FLAG_RPM_ACTIVE);
-               if (IS_ERR(link)) {
-                       dev_err(dev, "Failed to add device_link to %d: %ld\n", i,
-                               PTR_ERR(link));
+               if (!link) {
+                       dev_err(dev, "Failed to add device_link to %d\n", i);
                        return -EINVAL;
                }