From: Julia Lawall <julia.law...@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.law...@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; -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
