mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

usb: xhci: lock mutex on xhci_stop 

Else it races with xhci_setup_device

Cc: <stable@vger.kernel.org>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Roger Quadros 2015-09-21 17:46:12 +03:00 committed by Greg Kroah-Hartman
parent 2b7627b73e
commit 85ac90f895
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/host/xhci.c
View File

@ -677,8 +677,11 @@ void xhci_stop(struct usb_hcd *hcd)
u32 temp;
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
mutex_lock(&xhci->mutex);
if (!usb_hcd_is_primary_hcd(hcd)) {
xhci_only_stop_hcd(xhci->shared_hcd);
mutex_unlock(&xhci->mutex);
return;
}
@ -717,6 +720,7 @@ void xhci_stop(struct usb_hcd *hcd)
xhci_dbg_trace(xhci, trace_xhci_dbg_init,
"xhci_stop completed - status = %x",
readl(&xhci->op_regs->status));
mutex_unlock(&xhci->mutex);
}
/*