[PATCH] usb: gadget: f_fs: remove redundant ffs_data_get()

From: Robert Baldyga
Date: Thu Oct 09 2014 - 03:41:46 EST

During FunctionFS bind, ffs_data_get() function was called twice
(in functionfs_bind() and in ffs_do_functionfs_bind()), while on unbind
ffs_data_put() was called once (in functionfs_unbind() function).
In result refcount never reached value 0, and ffs memory resources has
been never released.

Since ffs_data_get() call in ffs_do_functionfs_bind() is redundant
and not neccessary, we remove it to have equal number of gets ans puts,
and free allocated memory after refcount reach 0.

Signed-off-by: Robert Baldyga <r.baldyga@xxxxxxxxxxx>
drivers/usb/gadget/function/f_fs.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 7c6771d..12dbdaf 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -2663,8 +2663,6 @@ static inline struct f_fs_opts *ffs_do_functionfs_bind(struct usb_function *f,
func->conf = c;
func->gadget = c->cdev->gadget;

- ffs_data_get(func->ffs);
* in drivers/usb/gadget/configfs.c:configfs_composite_bind()
* configurations are bound in sequence with list_for_each_entry,

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