On 07/07/2015 04:53 PM, Dan Carpenter wrote:
On Tue, Jul 07, 2015 at 04:02:49PM +0200, Robert Baldyga wrote:diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 6e7be91..966b214 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -2897,11 +2897,19 @@ static int ffs_func_bind(struct usb_configuration *c, struct usb_function *f) { struct f_fs_opts *ffs_opts = ffs_do_functionfs_bind(f, c); + struct ffs_function *func = ffs_func_from_usb(f); + int ret; if (IS_ERR(ffs_opts)) return PTR_ERR(ffs_opts); - return _ffs_func_bind(c, f); + ret = _ffs_func_bind(c, f); + if (ret) { + ffs_opts->refcnt--;Wait, why are we decrementing here? ffs_func_unbind() already has a decrement so this looks like a bug to me. Add a comment if it's really needed.
Decrement is done in ffs_func_unbind() which is not called in this error path. But after all I see another problem here, because we shouldn't call functionfs_unbind() if refcnt after decrement is not equal zero. I will fix it.
+ functionfs_unbind(func->ffs);
Thanks, Robert Baldyga _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
