1 files changed, 38 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.26/0172-fix-pcf50633-add-back-gratuitous-isr-work-call-in-re.patch b/target/linux/s3c24xx/patches-2.6.26/0172-fix-pcf50633-add-back-gratuitous-isr-work-call-in-re.patch
new file mode 100755
index 0000000000..b149540bac
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.26/0172-fix-pcf50633-add-back-gratuitous-isr-work-call-in-re.patch
@@ -0,0 +1,38 @@
+From d94d0b993494af18025b0980810ddbd44964ad04 Mon Sep 17 00:00:00 2001
+From: Andy Green <andy@openmoko.com>
+Date: Fri, 25 Jul 2008 23:06:14 +0100
+Subject: [PATCH] fix-pcf50633-add-back-gratuitous-isr-work-call-in-resume.patch
+
+Sean McNeil reports that he doesn't get pcf50633 interrupts any
+more after resume.  This adds back the call to ISR work in
+the resume, removal of which is probably to do with it.
+
+Signed-off-by: Andy Green <andy@openmoko.com>
+---
+ drivers/i2c/chips/pcf50633.c |   10 ++++++++++
+ 1 files changed, 10 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c
+index 3bc9fa7..4002c03 100644
+--- a/drivers/i2c/chips/pcf50633.c
++++ b/drivers/i2c/chips/pcf50633.c
+@@ -2467,6 +2467,16 @@ static int pcf50633_resume(struct device *dev)
+ 
+ 	mutex_unlock(&pcf->lock);
+ 
++	/* gratuitous call to PCF work function, in the case that the PCF
++	 * interrupt edge was missed during resume, this forces the pending
++	 * register clear and lifts the interrupt back high again.  In the
++	 * case nothing is waiting for service, no harm done.
++	 */
++
++	get_device(&pcf->client.dev);
++	if (!schedule_work(&pcf->work) && !pcf->working)
++		dev_err(&pcf->client.dev, "resume work item may be lost\n");
++
+ 	callback_all_resume_dependencies(&pcf->resume_dependency);
+ 
+ 	return 0;
+-- 
+1.5.6.3
+