Hello,

On 06/23/2015 12:01 AM, Ruslan Bilovol wrote:
Now when udc-core supports binding to specific UDC by passing
its name via 'udc_name' member of usb_gadget_driver struct,
switch to this generic approach.

Tested-by: Maxime Ripard <maxime.rip...@free-electrons.com>
Signed-off-by: Ruslan Bilovol <ruslan.bilo...@gmail.com>
---
  drivers/usb/gadget/configfs.c | 27 ++++++++++++++-------------
  1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index c42765b..efad021 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -54,7 +54,6 @@ struct gadget_info {
        struct list_head string_list;
        struct list_head available_func;

-       const char *udc_name;
  #ifdef CONFIG_USB_OTG
        struct usb_otg_descriptor otg;
  #endif
@@ -230,21 +229,21 @@ static ssize_t gadget_dev_desc_bcdUSB_store(struct 
gadget_info *gi,

  static ssize_t gadget_dev_desc_UDC_show(struct gadget_info *gi, char *page)
  {
-       return sprintf(page, "%s\n", gi->udc_name ?: "");
+       return sprintf(page, "%s\n", gi->composite.gadget_driver.udc_name ?: 
"");
  }

  static int unregister_gadget(struct gadget_info *gi)
  {
        int ret;

-       if (!gi->udc_name)
+       if (!gi->composite.gadget_driver.udc_name)
                return -ENODEV;

        ret = usb_gadget_unregister_driver(&gi->composite.gadget_driver);
        if (ret)
                return ret;
-       kfree(gi->udc_name);
-       gi->udc_name = NULL;
+       kfree(gi->composite.gadget_driver.udc_name);
+       gi->composite.gadget_driver.udc_name = NULL;
        return 0;
  }

@@ -267,14 +266,16 @@ static ssize_t gadget_dev_desc_UDC_store(struct 
gadget_info *gi,
                if (ret)
                        goto err;
        } else {
-               if (gi->udc_name) {
+               if (gi->composite.gadget_driver.udc_name) {

You are using this very long if condition in a few places, maybe it would be more suitable to define a macro or inline function for this? Something like gadget_dev_bound() or gadget_dev_is_active() or some other more suitable name.

Best regards,
--
Krzysztof Opasiak
Samsung R&D Institute Poland
Samsung Electronics
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