Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: document the multi-touch (MT) protocol
  Input: add detailed multi-touch finger data report protocol
  Input: allow certain EV_ABS events to bypass all filtering
  Input: bcm5974 - add documentation for the driver
  Input: bcm5974 - augment debug information
  Input: bcm5974 - Add support for the Macbook 5 (Unibody)
  Input: bcm5974 - add quad-finger tapping
  Input: bcm5974 - prepare for a new trackpad header type
  Input: appletouch - fix DMA to/from stack buffer
  Input: wacom - fix TabletPC touch bug
  Input: lifebook - add DMI entry for Fujitsu B-2130
  Input: ALPS - add signature for Toshiba Satellite Pro M10
  Input: elantech - make sure touchpad is really in absolute mode
  Input: elantech - provide a workaround for jumpy cursor on firmware 2.34
  Input: ucb1400 - use disable_irq_nosync() in irq handler
  Input: tsc2007 - use disable_irq_nosync() in irq handler
  Input: sa1111ps2 - use disable_irq_nosync() in irq handlers
  Input: omap-keypad - use disable_irq_nosync() in irq handler

1 files changed, 14 insertions, 2 deletions

diff --git a/drivers/input/keyboard/omap-keypad.c b/drivers/input/keyboard/omap-keypad.c
index 058fa8b02c21..87ec7b18ac69 100644
--- a/drivers/input/keyboard/omap-keypad.c
+++ b/drivers/input/keyboard/omap-keypad.c
@@ -100,8 +100,20 @@ static irqreturn_t omap_kp_interrupt(int irq, void *dev_id)
         /* disable keyboard interrupt and schedule for handling */
         if (cpu_is_omap24xx()) {
                 int i;
-                for (i = 0; i < omap_kp->rows; i++)
-                        disable_irq(gpio_to_irq(row_gpios[i]));
+
+                for (i = 0; i < omap_kp->rows; i++) {
+                        int gpio_irq = gpio_to_irq(row_gpios[i]);
+                        /*
+                         * The interrupt which we're currently handling should
+                         * be disabled _nosync() to avoid deadlocks waiting
+                         * for this handler to complete.  All others should
+                         * be disabled the regular way for SMP safety.
+                         */
+                        if (gpio_irq == irq)
+                                disable_irq_nosync(gpio_irq);
+                        else
+                                disable_irq(gpio_irq);
+                }
         } else
                 /* disable keyboard interrupt and schedule for handling */
                 omap_writew(1, OMAP_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);