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

varkabhadram
2014-11-04T01:47:50Z

From: Varka Bhadram <varkabhadram@gmail.com>

Fix in accessing NULL if resource didn't get.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
---
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