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net: hns3: add check NULL address for page pool

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When page pool is not enabled, its address value is still NULL and page
pool should not be accessed, so add a check for it.

Fixes: 850bfb912a ("net: hns3: debugfs add support dumping page pool info")
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Hao Chen 2021-11-26 20:03:16 +08:00 committed by Jakub Kicinski
parent 8d2ad993aa
commit b8af344cfe
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
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@ -1106,6 +1106,11 @@ hns3_dbg_page_pool_info(struct hnae3_handle *h, char *buf, int len)
return -EFAULT;
}
if (!priv->ring[h->kinfo.num_tqps].page_pool) {
dev_err(&h->pdev->dev, "page pool is not initialized\n");
return -EFAULT;
}
for (i = 0; i < ARRAY_SIZE(page_pool_info_items); i++)
result[i] = &data_str[i][0];