usb: gadget: printer: add container_of helper for printer_dev
5 uses of container_of() in the same context justify wrapping it in a static inline function. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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@ -89,6 +89,11 @@ struct printer_dev {
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struct usb_function function;
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};
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static inline struct printer_dev *func_to_printer(struct usb_function *f)
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{
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return container_of(f, struct printer_dev, function);
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}
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static struct printer_dev usb_printer_gadget;
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/*-------------------------------------------------------------------------*/
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@ -973,7 +978,7 @@ static void printer_soft_reset(struct printer_dev *dev)
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static int printer_func_setup(struct usb_function *f,
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const struct usb_ctrlrequest *ctrl)
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{
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struct printer_dev *dev = container_of(f, struct printer_dev, function);
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struct printer_dev *dev = func_to_printer(f);
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struct usb_composite_dev *cdev = f->config->cdev;
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struct usb_request *req = cdev->req;
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int value = -EOPNOTSUPP;
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@ -1047,7 +1052,7 @@ static int __init printer_func_bind(struct usb_configuration *c,
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struct usb_function *f)
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{
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struct usb_gadget *gadget = c->cdev->gadget;
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struct printer_dev *dev = container_of(f, struct printer_dev, function);
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struct printer_dev *dev = func_to_printer(f);
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struct device *pdev;
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struct usb_composite_dev *cdev = c->cdev;
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struct usb_ep *in_ep;
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@ -1159,7 +1164,7 @@ static void printer_func_unbind(struct usb_configuration *c,
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struct printer_dev *dev;
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struct usb_request *req;
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dev = container_of(f, struct printer_dev, function);
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dev = func_to_printer(f);
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device_destroy(usb_gadget_class, g_printer_devno);
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@ -1200,7 +1205,7 @@ static void printer_func_unbind(struct usb_configuration *c,
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static int printer_func_set_alt(struct usb_function *f,
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unsigned intf, unsigned alt)
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{
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struct printer_dev *dev = container_of(f, struct printer_dev, function);
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struct printer_dev *dev = func_to_printer(f);
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int ret = -ENOTSUPP;
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if (!alt)
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@ -1211,7 +1216,7 @@ static int printer_func_set_alt(struct usb_function *f,
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static void printer_func_disable(struct usb_function *f)
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{
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struct printer_dev *dev = container_of(f, struct printer_dev, function);
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struct printer_dev *dev = func_to_printer(f);
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unsigned long flags;
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DBG(dev, "%s\n", __func__);
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