Commit 2ca83afc authored Aug 08, 2016 by Hemant Kumar Committed by Mayank Rana Nov 17, 2016

usb: f_fs: Prevent gadget unbind if it is already unbound



Upon usb composition switch there is possibility of ep0 file
release happening after gadget driver bind. In case of composition
switch from adb to a non-adb composition gadget will never gets
bound again resulting into failure of usb device enumeration. Fix
this issue by checking FFS_FL_BOUND flag and avoid extra
gadget driver unbind if it is already done as part of composition
switch.

Change-Id: I1638001ff4a94f08224b188aa42425f3d732fa2b
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>

parent 8e42e641

drivers/usb/gadget/function/f_fs.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -4060,10 +4060,11 @@ static void ffs_closed(struct ffs_data *ffs)

		ffs_dev_unlock();

		if (test_bit(FFS_FL_BOUND, &ffs->flags)) {
		unregister_gadget_item(opts->
		func_inst.group.cg_item.ci_parent->ci_parent);

		ffs_log("unreg gadget done");
		}
		done:
		ffs_log("exit");
		}