Messages in this thread Patch in this message | | | From | Julia Lawall <> | Subject | [PATCH 5/5] drivers/usb/host/ehci-platform.c: fix error return code | Date | Tue, 14 Aug 2012 08:47:38 +0200 |
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From: Julia Lawall <Julia.Lawall@lip6.fr>
Convert a possibly 0 error return code to a negative one, as returned elsewhere in the function.
A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/)
// <smpl> @@ identifier ret; expression e,e1,e2,e3,e4,x; @@
( if (\(ret != 0\|ret < 0\) || ...) { ... return ...; } | ret = 0 ) ... when != ret = e1 *x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...); ... when != x = e2 when != ret = e3 *if (x == NULL || ...) { ... when != ret = e4 * return ret; } // </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
--- drivers/usb/host/ehci-platform.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index 91acdde..764e010 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -128,8 +128,10 @@ static int __devinit ehci_platform_probe(struct platform_device *dev) } hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len); - if (!hcd->regs) + if (!hcd->regs) { + err = -ENOMEM; goto err_release_region; + } err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) goto err_iounmap;
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