pandora: reserve CMA area for c64_tools

[pandora-kernel.git] / drivers / mfd / twl6030-irq.c

diff --git a/drivers/mfd/twl6030-irq.c b/drivers/mfd/twl6030-irq.c
index 3eee45f..83f4988 100644 (file)
--- a/drivers/mfd/twl6030-irq.c
+++ b/drivers/mfd/twl6030-irq.c
@@ -187,8 +187,17 @@ static int twl6030_irq_thread(void *data)
                        }
                local_irq_enable();
                }
-               ret = twl_i2c_write(TWL_MODULE_PIH, sts.bytes,
-                               REG_INT_STS_A, 3); /* clear INT_STS_A */
+
+               /*
+                * NOTE:
+                * Simulation confirms that documentation is wrong w.r.t the
+                * interrupt status clear operation. A single *byte* write to
+                * any one of STS_A to STS_C register results in all three
+                * STS registers being reset. Since it does not matter which
+                * value is written, all three registers are cleared on a
+                * single byte write, so we just use 0x0 to clear.
+                */
+               ret = twl_i2c_write_u8(TWL_MODULE_PIH, 0x00, REG_INT_STS_A);
                if (ret)
                        pr_warning("twl6030: I2C error in clearing PIH ISR\n");