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usb: gadget: legacy: fix error return code in gncm_bind()

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commit e27d4b30b71c66986196d8a1eb93cba9f602904a upstream.

If 'usb_otg_descriptor_alloc()' fails, we must return a
negative error code -ENOMEM, not 0.

Fixes: 1156e91dd7 ("usb: gadget: ncm: allocate and init otg descriptor by otg capabilities")
Reported-by: Hulk Robot <[email protected]>
Signed-off-by: Wei Yongjun <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Wei Yongjun 2020-05-07 05:13:23 +00:00 • committed by Greg Kroah-Hartman
commit 7e5c1db8ad
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/gadget/legacy/ncm.c
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@ -156,8 +156,10 @@ static int gncm_bind(struct usb_composite_dev *cdev)
struct usb_descriptor_header *usb_desc;
usb_desc = usb_otg_descriptor_alloc(gadget);
if (!usb_desc)
if (!usb_desc) {
status = -ENOMEM;
goto fail;
}
usb_otg_descriptor_init(gadget, usb_desc);
otg_desc[0] = usb_desc;
otg_desc[1] = NULL;