[PATCH usb v4 1/2] host: uhci-platform: fix NULL pointer dereference on resource

From: varkabhadram
Date: Mon Nov 03 2014 - 20:47:53 EST


From: Varka Bhadram <varkabhadram@xxxxxxxxx>

Fix in accessing NULL if resource didn't get.

Signed-off-by: Varka Bhadram <varkab@xxxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/uhci-platform.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/uhci-platform.c b/drivers/usb/host/uhci-platform.c
index b987f1d..cf8f460 100644
--- a/drivers/usb/host/uhci-platform.c
+++ b/drivers/usb/host/uhci-platform.c
@@ -86,14 +86,14 @@ static int uhci_hcd_platform_probe(struct platform_device *pdev)
return -ENOMEM;

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
-
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
goto err_rmr;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
uhci = hcd_to_uhci(hcd);

uhci->regs = hcd->regs;
--
1.7.9.5

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