diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-16 20:48:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-16 20:48:14 -0700 |
| commit | b62dabfb4b28a2d88deb4907ed0249da4d33d279 (patch) | |
| tree | f3f00bcffd865218de8e53b9b08cb70dbb2bf432 /drivers/usb/class/cdc-acm.c | |
| parent | 306a63bee192859ebd32c7328c7766636d882d8f (diff) | |
| parent | e86103a75705c7c530768f4ffaba74cf382910f2 (diff) | |
Merge tag 'usb-4.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
"Here are some small USB fixes for 4.6-rc4.
Mostly xhci fixes for reported issues, a UAS bug that has hit a number
of people, including stable tree users, and a few other minor things.
All have been in linux-next for a while with no reported issues"
* tag 'usb-4.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: hcd: out of bounds access in for_each_companion
USB: uas: Add a new NO_REPORT_LUNS quirk
USB: uas: Limit qdepth at the scsi-host level
doc: usb: Fix typo in gadget_multi documentation
usb: host: xhci-plat: Make enum xhci_plat_type start at a non zero value
xhci: fix 10 second timeout on removal of PCI hotpluggable xhci controllers
usb: xhci: fix wild pointers in xhci_mem_cleanup
usb: host: xhci-plat: fix cannot work if R-Car Gen2/3 run on above 4GB phys
usb: host: xhci: add a new quirk XHCI_NO_64BIT_SUPPORT
xhci: resume USB 3 roothub first
usb: xhci: applying XHCI_PME_STUCK_QUIRK to Intel BXT B0 host
cdc-acm: fix crash if flushed with nothing buffered
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 83fd30b0577c..a6c4a1b895bd 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -744,11 +744,15 @@ static void acm_tty_flush_chars(struct tty_struct *tty) int err; unsigned long flags; + if (!cur) /* nothing to do */ + return; + acm->putbuffer = NULL; err = usb_autopm_get_interface_async(acm->control); spin_lock_irqsave(&acm->write_lock, flags); if (err < 0) { cur->use = 0; + acm->putbuffer = cur; goto out; } |