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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-27 10:24:17 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-27 10:24:17 -0700 |
commit | fefb82756e9fd89d0c0d5983e056df81d51eb075 (patch) | |
tree | f68d8d894d915fa64502bad8a0b83c811e2ff2e2 /drivers/usb/gadget/f_fs.c | |
parent | e9dba837640d960f56bef22ff08611955ff8a5b4 (diff) | |
parent | 34f972d6156fe9eea2ab7bb418c71f9d1d5c8e7b (diff) | |
download | linux-fefb82756e9fd89d0c0d5983e056df81d51eb075.tar.bz2 |
Merge tag 'usb-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of USB fixes for 3.15-rc3. The majority are gadget
fixes, as we didn't get any of those in for 3.15-rc2. The others are
all over the place, and there's a number of new device id addtions as
well."
* tag 'usb-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (35 commits)
usb: option: add and update a number of CMOTech devices
usb: option: add Alcatel L800MA
usb: option: add Olivetti Olicard 500
usb: qcserial: add Sierra Wireless MC7305/MC7355
usb: qcserial: add Sierra Wireless MC73xx
usb: qcserial: add Sierra Wireless EM7355
USB: io_ti: fix firmware download on big-endian machines
usb/xhci: fix compilation warning when !CONFIG_PCI && !CONFIG_PM
xhci: extend quirk for Renesas cards
xhci: Switch Intel Lynx Point ports to EHCI on shutdown.
usb: xhci: Prefer endpoint context dequeue pointer over stopped_trb
phy: core: make NULL a valid phy reference if !CONFIG_GENERIC_PHY
phy: fix kernel oops in phy_lookup()
phy: restore OMAP_CONTROL_PHY dependencies
phy: exynos: fix building as a module
USB: serial: fix sysfs-attribute removal deadlock
usb: wusbcore: fix panic in wusbhc_chid_set
usb: wusbcore: convert nested lock to use spin_lock instead of spin_lock_irq
uwb: don't call spin_unlock_irq in a USB completion handler
usb: chipidea: coordinate usb phy initialization for different phy type
...
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)) |