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USB: gadget: f_fs: use usb_string_ids_n()

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Use usb_string_ids_n() function to simplify string ids
registeration.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michal Nazarewicz 2010-06-16 12:08:00 +02:00 • committed by Greg Kroah-Hartman
commit fd7c9a007f
1 changed files with 12 additions and 18 deletions
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30
drivers/usb/gadget/f_fs.c
View file

@ -1375,7 +1375,8 @@ static void ffs_data_reset(struct ffs_data *ffs)
static int functionfs_bind(struct ffs_data *ffs, struct usb_composite_dev *cdev)
{
unsigned i, count;
struct usb_gadget_strings **lang;
int first_id;
ENTER();
@ -1383,7 +1384,9 @@ static int functionfs_bind(struct ffs_data *ffs, struct usb_composite_dev *cdev)
|| test_and_set_bit(FFS_FL_BOUND, &ffs->flags)))
return -EBADFD;
ffs_data_get(ffs);
first_id = usb_string_ids_n(cdev, ffs->strings_count);
if (unlikely(first_id < 0))
return first_id;
ffs->ep0req = usb_ep_alloc_request(cdev->gadget->ep0, GFP_KERNEL);
if (unlikely(!ffs->ep0req))
@ -1391,25 +1394,16 @@ static int functionfs_bind(struct ffs_data *ffs, struct usb_composite_dev *cdev)
ffs->ep0req->complete = ffs_ep0_complete;
ffs->ep0req->context = ffs;
/* Get strings identifiers */
for (count = ffs->strings_count, i = 0; i < count; ++i) {
struct usb_gadget_strings **lang;
int id = usb_string_id(cdev);
if (unlikely(id < 0)) {
usb_ep_free_request(cdev->gadget->ep0, ffs->ep0req);
ffs->ep0req = NULL;
return id;
}
lang = ffs->stringtabs;
do {
(*lang)->strings[i].id = id;
++lang;
} while (*lang);
lang = ffs->stringtabs;
for (lang = ffs->stringtabs; *lang; ++lang) {
struct usb_string *str = (*lang)->strings;
int id = first_id;
for (; str->s; ++id, ++str)
str->id = id;
}
ffs->gadget = cdev->gadget;
ffs_data_get(ffs);
return 0;
}