This is a note to let you know that I've just added the patch titled
mfd: ti_am335x_tscadc: Fix TSC resume
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mfd-ti_am335x_tscadc-fix-tsc-resume.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6a71f38dd87f255a0586104ce2a14d5a3ddf3401 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Date: Mon, 8 Sep 2014 15:28:42 +0200
Subject: mfd: ti_am335x_tscadc: Fix TSC resume
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
commit 6a71f38dd87f255a0586104ce2a14d5a3ddf3401 upstream.
In the resume path, the ADC invokes am335x_tsc_se_set_cache() with 0 as
the steps argument if continous mode is not in use. This in turn disables
all steps and so the TSC is not working until one ADC sampling is
performed.
This patch fixes it by writing the current cached mask instead of the
passed steps.
Fixes: 7ca6740cd1cd ("mfd: input: iio: ti_amm335x: Rework TSC/ADCA
synchronization")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mfd/ti_am335x_tscadc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mfd/ti_am335x_tscadc.c
+++ b/drivers/mfd/ti_am335x_tscadc.c
@@ -57,7 +57,7 @@ void am335x_tsc_se_set_cache(struct ti_t
if (tsadc->adc_waiting)
wake_up(&tsadc->reg_se_wait);
else if (!tsadc->adc_in_use)
- tscadc_writel(tsadc, REG_SE, val);
+ tscadc_writel(tsadc, REG_SE, tsadc->reg_se_cache);
spin_unlock_irqrestore(&tsadc->reg_lock, flags);
}
Patches currently in stable-queue which might be from bigeasy@xxxxxxxxxxxxx are
queue-3.17/mfd-ti_am335x_tscadc-fix-tsc-resume.patch
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