diff options
| author | Sebastian Reichel <sre@kernel.org> | 2014-05-06 15:44:50 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2014-05-06 15:44:50 +0200 |
| commit | 695f5ec02203ef23f127eacb86991d23307f3c6f (patch) | |
| tree | ecb9c29268fa34559dfa06472d991bc5d92708be /drivers/usb/gadget/f_fs.c | |
| parent | 5bdeae302496a8ac49848f4fed26b1d87a67d966 (diff) | |
| parent | 793ec5f7dccf95c0d6d5d57a925a13261a7cbd2b (diff) | |
| download | linux-n900-dt-with-ssi.tar.bz2 | |
Merge branch 'n900-modem-support' into n900-dt-with-ssin900-dt-with-ssi
Conflicts:
arch/arm/boot/dts/omap3-n900.dts
Diffstat (limited to 'drivers/usb/gadget/f_fs.c')
| -rw-r--r-- | drivers/usb/gadget/f_fs.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 2e164dca08e8..1e12b3ee56fd 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -745,6 +745,12 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) */ struct usb_gadget *gadget = epfile->ffs->gadget; + spin_lock_irq(&epfile->ffs->eps_lock); + /* In the meantime, endpoint got disabled or changed. */ + if (epfile->ep != ep) { + spin_unlock_irq(&epfile->ffs->eps_lock); + return -ESHUTDOWN; + } /* * Controller may require buffer size to be aligned to * maxpacketsize of an out endpoint. @@ -752,6 +758,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) data_len = io_data->read ? usb_ep_align_maybe(gadget, ep->ep, io_data->len) : io_data->len; + spin_unlock_irq(&epfile->ffs->eps_lock); data = kmalloc(data_len, GFP_KERNEL); if (unlikely(!data)) |