From: Lijun Ou <oulijun@xxxxxxxxxx>
This patch mainly fixes the bug with platform_get_resource().
It should return NULL when platform_get_resource() exec fail.
Signed-off-by: Lijun Ou <oulijun@xxxxxxxxxx>
Reviewed-by: Wei Hu (Xavier) <xavier.huwei@xxxxxxxxxx>
Signed-off-by: Salil Mehta <salil.mehta@xxxxxxxxxx>
---
drivers/infiniband/hw/hns/hns_roce_pd.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/infiniband/hw/hns/hns_roce_pd.c b/drivers/infiniband/hw/hns/hns_roce_pd.c
index 0cd6132..05db7d5 100644
--- a/drivers/infiniband/hw/hns/hns_roce_pd.c
+++ b/drivers/infiniband/hw/hns/hns_roce_pd.c
@@ -110,6 +110,10 @@ int hns_roce_uar_alloc(struct hns_roce_dev *hr_dev, struct hns_roce_uar *uar)
(hr_dev->caps.phy_num_uars - 1) + 1;
res = platform_get_resource(hr_dev->pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&hr_dev->pdev->dev, "memory resource not found!\n");
+ return -EINVAL;
+ }
uar->pfn = ((res->start) >> PAGE_SHIFT) + uar->index;
return 0;
--
1.9.1
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