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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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6
drivers/usb/gadget/udc/net2272.c
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@@ -1169,8 +1169,7 @@ net2272_pullup(struct usb_gadget *_gadget, int is_on)
static int net2272_start(struct usb_gadget *_gadget,
struct usb_gadget_driver *driver);
static int net2272_stop(struct usb_gadget *_gadget,
struct usb_gadget_driver *driver);
static int net2272_stop(struct usb_gadget *_gadget);
static const struct usb_gadget_ops net2272_ops = {
.get_frame = net2272_get_frame,
@@ -1500,8 +1499,7 @@ stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver)
net2272_usb_reinit(dev);
}
static int net2272_stop(struct usb_gadget *_gadget,
struct usb_gadget_driver *driver)
static int net2272_stop(struct usb_gadget *_gadget)
{
struct net2272 *dev;
unsigned long flags;