From: Zhang Qilong <zhangqilong3@xxxxxxxxxx>
If io map failed in devm_ioremap/devm_ioport_map, base
or alt_base will be null, it will cause setup port error
later but it won't be found out in plat_ide_setup_ports.
Signed-off-by: Zhang Qilong <zhangqilong3@xxxxxxxxxx>
---
drivers/ide/ide_platform.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/ide/ide_platform.c b/drivers/ide/ide_platform.c
index 91639fd6c276..fdbc565ef142 100644
--- a/drivers/ide/ide_platform.c
+++ b/drivers/ide/ide_platform.c
@@ -86,6 +86,11 @@ static int plat_ide_probe(struct platform_device *pdev)
res_alt->start, resource_size(res_alt));
}
+ if (!base || !alt_base) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
memset(&hw, 0, sizeof(hw));
plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
hw.dev = &pdev->dev;
--
2.17.1
