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| author | Julia Lawall <Julia.Lawall@lip6.fr> | 2013-08-19 18:00:08 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-08-27 21:17:03 +0200 |
| commit | 51ef74f6400c731827454d010b35b122103fe9f9 (patch) | |
| tree | 31da411ab585eadc5dcff11996d28d2eb9157457 /drivers/usb | |
| parent | usb: gadget: USB_NET2272_DMA should depend on HAS_DMA (diff) | |
| download | linux-51ef74f6400c731827454d010b35b122103fe9f9.tar.xz linux-51ef74f6400c731827454d010b35b122103fe9f9.zip | |
usb: musb: dsps: fix devm_ioremap_resource error detection code
devm_ioremap_resource returns an ERR_PTR value, not NULL, on failure.
Furthermore, the value returned by devm_ioremap_resource should be tested.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e,e1;
statement S;
@@
*e = devm_ioremap_resource(...);
if (!e1) S
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/musb/musb_dsps.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 4ffbaace7913..4ad52e76c4dd 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -361,8 +361,8 @@ static int dsps_musb_init(struct musb *musb) return -EINVAL; reg_base = devm_ioremap_resource(dev, r); - if (!musb->ctrl_base) - return -EINVAL; + if (IS_ERR(reg_base)) + return PTR_ERR(reg_base); musb->ctrl_base = reg_base; /* NOP driver needs change if supporting dual instance */ |