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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-06-07 11:49:42 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2011-07-31 23:28:21 +0200
commit98ae1ccaf62d5006884e01159bf7a63174b0fc03 (patch)
treea0c293451f24aad6a823d7b1e7a12e49878c69ff /drivers/mfd
parent78bb3688ea1830672b8095fb6388593f582cd591 (diff)
mfd: Fix WM8994 IRQ register cache restore on resume
When the byte swap was factored out into the per-register I/O functions the register restore for the IRQ mask cache (which we use and store in CPU native format for the interrupt handler) was not updated to do a byte swap when it uses the bulk I/O. Fix this by writing the cache out one register at a time. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/wm8994-core.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index 18f19b7198a0..7caf0d82a9a2 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -316,7 +316,7 @@ static int wm8994_suspend(struct device *dev)
static int wm8994_resume(struct device *dev)
{
struct wm8994 *wm8994 = dev_get_drvdata(dev);
- int ret;
+ int ret, i;
/* We may have lied to the PM core about suspending */
if (!wm8994->suspended)
@@ -329,10 +329,16 @@ static int wm8994_resume(struct device *dev)
return ret;
}
- ret = wm8994_write(wm8994, WM8994_INTERRUPT_STATUS_1_MASK,
- WM8994_NUM_IRQ_REGS * 2, &wm8994->irq_masks_cur);
- if (ret < 0)
- dev_err(dev, "Failed to restore interrupt masks: %d\n", ret);
+ /* Write register at a time as we use the cache on the CPU so store
+ * it in native endian.
+ */
+ for (i = 0; i < ARRAY_SIZE(wm8994->irq_masks_cur); i++) {
+ ret = wm8994_reg_write(wm8994, WM8994_INTERRUPT_STATUS_1_MASK
+ + i, wm8994->irq_masks_cur[i]);
+ if (ret < 0)
+ dev_err(dev, "Failed to restore interrupt masks: %d\n",
+ ret);
+ }
ret = wm8994_write(wm8994, WM8994_LDO_1, WM8994_NUM_LDO_REGS * 2,
&wm8994->ldo_regs);