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usb: gadget: remove unnecessary 'driver' argument

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now that no UDC driver relies on the extra
'driver' argument to ->udc_stop(), we can
safely remove it.

This commit is based on previous work by
Robert Baldyga <r.baldyga@samsung.com> which
can be found at [1]; however that patch turned
out to have a high probability of regressing
many UDC drivers because of a blind search & replace
s/driver/$udc->driver/ which caused the 'driver'
argument to stop_activity() to be a valid non-NULL
pointer when it should be NULL, thus causing UDCs
to mistakenly call gadget driver's ->disconnect()
callback.

[1] http://markmail.org/message/x5zneg4xea4zntab

Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi
2014-10-17 12:05:12 -05:00
parent 8da9fe8af8
commit 22835b807e
32 changed files with 55 additions and 99 deletions
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3
drivers/usb/gadget/udc/gr_udc.c
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@@ -1935,8 +1935,7 @@ static int gr_udc_start(struct usb_gadget *gadget,
return 0;
}
static int gr_udc_stop(struct usb_gadget *gadget,
struct usb_gadget_driver *driver)
static int gr_udc_stop(struct usb_gadget *gadget)
{
struct gr_udc *dev = to_gr_udc(gadget);
unsigned long flags;