[PATCH usb v4 2/2] host: ehci-sead3: fix NULL pointer dereference on resource

varkabhadram
2014-11-04T01:48:24Z

From: Varka Bhadram <varkabhadram@gmail.com>

Fix on accessing NULL pointer dereference on get resource failed.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
---
drivers/usb/host/ehci-sead3.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/ehci-sead3.c b/drivers/usb/host/ehci-sead3.c
index cf12676..9b6e8d0 100644
--- a/drivers/usb/host/ehci-sead3.c
+++ b/drivers/usb/host/ehci-sead3.c
@@ -110,14 +110,13 @@ static int ehci_hcd_sead3_drv_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 err1;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);

/* Root hub has integrated TT. */
hcd->has_tt = 1;
--
1.7.9.5