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