1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index d10456ffd811..763c60d3d277 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -105,6 +105,22 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
                                         "Failed to sync wakes in %x: %d\n",
                                         reg, ret);
                 }
+
+                if (!d->chip->init_ack_masked)
+                        continue;
+                /*
+                 * Ack all the masked interrupts uncondictionly,
+                 * OR if there is masked interrupt which hasn't been Acked,
+                 * it'll be ignored in irq handler, then may introduce irq storm
+                 */
+                if (d->mask_buf[i] && d->chip->ack_base) {
+                        reg = d->chip->ack_base +
+                                (i * map->reg_stride * d->irq_reg_stride);
+                        ret = regmap_write(map, reg, d->mask_buf[i]);
+                        if (ret != 0)
+                                dev_err(d->map->dev, "Failed to ack 0x%x: %d\n",
+                                        reg, ret);
+                }
         }
 
         if (d->chip->runtime_pm)