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Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1032-pcf50633-suspend-hacks.patch.patch')
-rw-r--r--target/linux/s3c24xx/patches-2.6.24/1032-pcf50633-suspend-hacks.patch.patch45
1 files changed, 45 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1032-pcf50633-suspend-hacks.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1032-pcf50633-suspend-hacks.patch.patch
new file mode 100644
index 0000000000..4c388994f1
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.24/1032-pcf50633-suspend-hacks.patch.patch
@@ -0,0 +1,45 @@
+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
+