46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
From 56b25d1ddc3662594f9344bac89f08bcf993cc61 Mon Sep 17 00:00:00 2001
|
|
From: mokopatches <mokopatches@openmoko.org>
|
|
Date: Fri, 4 Apr 2008 11:34:44 +0100
|
|
Subject: [PATCH] pcf50633-suspend-hacks.patch
|
|
|
|
---
|
|
drivers/i2c/chips/pcf50633.c | 22 ++++++++++++++++++++--
|
|
1 files changed, 20 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c
|
|
index 5488084..0cf5e53 100644
|
|
--- a/drivers/i2c/chips/pcf50633.c
|
|
+++ b/drivers/i2c/chips/pcf50633.c
|
|
@@ -567,8 +567,26 @@ static void pcf50633_work(struct work_struct *work)
|
|
*/
|
|
ret = i2c_smbus_read_i2c_block_data(&pcf->client, PCF50633_REG_INT1, 5,
|
|
pcfirq);
|
|
- if (ret != 5)
|
|
- DEBUGP("Oh crap PMU IRQ register read failed %d\n", ret);
|
|
+ if (ret != 5) {
|
|
+ DEBUGP("Oh crap PMU IRQ register read failed -- "
|
|
+ "retrying later %d\n", ret);
|
|
+ /*
|
|
+ * this situation can happen during resume, just defer
|
|
+ * handling the interrupt until enough I2C is up we can
|
|
+ * actually talk to the PMU. We can't just ignore this
|
|
+ * because we are on a falling edge interrupt and our
|
|
+ * PMU interrupt source does not clear until we read these
|
|
+ * interrupt source registers.
|
|
+ */
|
|
+ if (!schedule_work(&pcf->work) && !pcf->working)
|
|
+ dev_dbg(&pcf->client.dev, "work item may be lost\n");
|
|
+
|
|
+ /* we don't put the device here, hold it for next time */
|
|
+ mutex_unlock(&pcf->working_lock);
|
|
+ /* don't spew, delaying whatever else is happening */
|
|
+ msleep(1);
|
|
+ return;
|
|
+ }
|
|
|
|
if (!pcf->coldplug_done) {
|
|
DEBUGP("PMU Coldplug init\n");
|
|
--
|
|
1.5.6.5
|
|
|