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authorMichal Nazarewicz <m.nazarewicz@samsung.com>2010-06-16 12:08:00 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2010-08-10 14:35:36 -0700
commitfd7c9a007f7d45df86974c3f83d67ab21cc21f1f (patch)
tree143a1c3d28d83c3cadf8962bac139259b8d69aff /drivers/usb/gadget
parentf2adc4f8aaf272de9ac71dcb18d95ebe05fc3f94 (diff)
downloadop-kernel-dev-fd7c9a007f7d45df86974c3f83d67ab21cc21f1f.zip
op-kernel-dev-fd7c9a007f7d45df86974c3f83d67ab21cc21f1f.tar.gz
USB: gadget: f_fs: use usb_string_ids_n()
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>
Diffstat (limited to 'drivers/usb/gadget')
-rw-r--r--drivers/usb/gadget/f_fs.c30
1 files changed, 12 insertions, 18 deletions
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index 282b49e..e4f5950 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -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;
}
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