diff options
| author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2013-03-11 16:32:14 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-28 12:18:02 -0700 |
| commit | a9cc438a69cc909ddfe9df5b2d9d2a26e90eaa9a (patch) | |
| tree | 3658d12a53a846a9675529ce8141ded1344744f8 | |
| parent | 810a2afaca15e49ae85c0b1775a224431ebf0348 (diff) | |
usb: gadget: ffs: fix enable multiple instances
commit 3416905ba058e43112ad7b1b4859797f027f5a07 upstream.
This patch fixes an "off-by-one" bug found in
581791f (FunctionFS: enable multiple functions).
During gfs_bind/gfs_unbind the functionfs_bind/functionfs_unbind should be
called for every functionfs instance. With the "i" pre-decremented they
were not called for the zeroth instance.
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[ balbi@ti.com : added offending commit's subject ]
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/gadget/g_ffs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c index 3953dd4d7186..3b343b23e4b0 100644 --- a/drivers/usb/gadget/g_ffs.c +++ b/drivers/usb/gadget/g_ffs.c @@ -357,7 +357,7 @@ static int gfs_bind(struct usb_composite_dev *cdev) goto error; gfs_dev_desc.iProduct = gfs_strings[USB_GADGET_PRODUCT_IDX].id; - for (i = func_num; --i; ) { + for (i = func_num; i--; ) { ret = functionfs_bind(ffs_tab[i].ffs_data, cdev); if (unlikely(ret < 0)) { while (++i < func_num) @@ -413,7 +413,7 @@ static int gfs_unbind(struct usb_composite_dev *cdev) gether_cleanup(); gfs_ether_setup = false; - for (i = func_num; --i; ) + for (i = func_num; i--; ) if (ffs_tab[i].ffs_data) functionfs_unbind(ffs_tab[i].ffs_data); |