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net: sparx5: check return value after calling platform_get_resource()

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It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.

Fixes: 3cfa11bac9 ("net: sparx5: add the basic sparx5 driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yang Yingliang 2021-06-26 12:44:18 +08:00 committed by David S. Miller
parent 4bec3cea34
commit f00af5cc58
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/microchip/sparx5/sparx5_main.c
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@ -228,6 +228,10 @@ static int sparx5_create_targets(struct sparx5 *sparx5)
for (idx = 0; idx < IO_RANGES; idx++) {
iores[idx] = platform_get_resource(sparx5->pdev, IORESOURCE_MEM,
idx);
if (!iores[idx]) {
dev_err(sparx5->dev, "Invalid resource\n");
return -EINVAL;
}
iomem[idx] = devm_ioremap(sparx5->dev,
iores[idx]->start,
iores[idx]->end - iores[idx]->start