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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>
This commit is contained in:
Andrzej Pietrasiewicz 2015-03-03 10:52:22 +01:00 committed by Felipe Balbi
parent 8fe20f661f
commit 143d53e10e
1 changed files with 10 additions and 5 deletions
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15
drivers/usb/gadget/legacy/printer.c
View File

@ -89,6 +89,11 @@ struct printer_dev {
struct usb_function function;
};
static inline struct printer_dev *func_to_printer(struct usb_function *f)
{
return container_of(f, struct printer_dev, function);
}
static struct printer_dev usb_printer_gadget;
/*-------------------------------------------------------------------------*/
@ -973,7 +978,7 @@ static void printer_soft_reset(struct printer_dev *dev)
static int printer_func_setup(struct usb_function *f,
const struct usb_ctrlrequest *ctrl)
{
struct printer_dev *dev = container_of(f, struct printer_dev, function);
struct printer_dev *dev = func_to_printer(f);
struct usb_composite_dev *cdev = f->config->cdev;
struct usb_request *req = cdev->req;
int value = -EOPNOTSUPP;
@ -1047,7 +1052,7 @@ static int __init printer_func_bind(struct usb_configuration *c,
struct usb_function *f)
{
struct usb_gadget *gadget = c->cdev->gadget;
struct printer_dev *dev = container_of(f, struct printer_dev, function);
struct printer_dev *dev = func_to_printer(f);
struct device *pdev;
struct usb_composite_dev *cdev = c->cdev;
struct usb_ep *in_ep;
@ -1159,7 +1164,7 @@ static void printer_func_unbind(struct usb_configuration *c,
struct printer_dev *dev;
struct usb_request *req;
dev = container_of(f, struct printer_dev, function);
dev = func_to_printer(f);
device_destroy(usb_gadget_class, g_printer_devno);
@ -1200,7 +1205,7 @@ static void printer_func_unbind(struct usb_configuration *c,
static int printer_func_set_alt(struct usb_function *f,
unsigned intf, unsigned alt)
{
struct printer_dev *dev = container_of(f, struct printer_dev, function);
struct printer_dev *dev = func_to_printer(f);
int ret = -ENOTSUPP;
if (!alt)
@ -1211,7 +1216,7 @@ static int printer_func_set_alt(struct usb_function *f,
static void printer_func_disable(struct usb_function *f)
{
struct printer_dev *dev = container_of(f, struct printer_dev, function);
struct printer_dev *dev = func_to_printer(f);
unsigned long flags;
DBG(dev, "%s\n", __func__);