mfd: Rely on regmap cache in wm8350 interrupt controller

We can just use regmap_update_bits() to achieve the same effect - it will
do the read/modify/update cycle for us.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/mfd/wm8350-irq.c b/drivers/mfd/wm8350-irq.c
index 9fd01bf63c51..624ff90501cd 100644
--- a/drivers/mfd/wm8350-irq.c
+++ b/drivers/mfd/wm8350-irq.c
@@ -432,11 +432,9 @@ static void wm8350_irq_sync_unlock(struct irq_data *data)
         for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {
                 /* If there's been a change in the mask write it back
                  * to the hardware. */
-                if (wm8350->irq_masks[i] !=
-                    wm8350->reg_cache[WM8350_INT_STATUS_1_MASK + i])
-                        WARN_ON(wm8350_reg_write(wm8350,
-                                         WM8350_INT_STATUS_1_MASK + i,
-                                                 wm8350->irq_masks[i]));
+                WARN_ON(regmap_update_bits(wm8350->regmap,
+                                           WM8350_INT_STATUS_1_MASK + i,
+                                           0xffff, wm8350->irq_masks[i]));
         }
 
         mutex_unlock(&wm8350->irq_lock);