There are several issues here:
1) platform_get_resource() can return NULL and that wasn't handled.
2) We should request the memory before we remap it, and
devm_ioremap_resource() does that.
3) devm_ioremap() returns a NULL but we were checking for IS_ERR().
Fixes: 6b99c68ec1f9 ('usb: phy: msm: Migrate to Managed Device Resource allocation')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
v2: the first version just swapped the IS_ERR() check for a NULL check
Thanks everyone for the review. In the end, it was still a one line fix
so I forgive you Ivan.
diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c
index c522c4f..4f88174 100644
--- a/drivers/usb/phy/phy-msm-usb.c
+++ b/drivers/usb/phy/phy-msm-usb.c
@@ -1586,7 +1586,7 @@ static int msm_otg_probe(struct platform_device *pdev)
np ? "alt_core" : "usb_hs_core_clk");
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- motg->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+ motg->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(motg->regs))
return PTR_ERR(motg->regs);
--
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