This is a note to let you know that I've just added the patch titled
ARM: SAMSUNG: fix race in s3c_adc_start for ADC
to the 3.0-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:
arm-samsung-fix-race-in-s3c_adc_start-for-adc.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 8265981bb439f3ecc5356fb877a6c2a6636ac88a Mon Sep 17 00:00:00 2001
From: Todd Poynor <[email protected]>
Date: Fri, 13 Jul 2012 15:30:48 +0900
Subject: ARM: SAMSUNG: fix race in s3c_adc_start for ADC
From: Todd Poynor <[email protected]>
commit 8265981bb439f3ecc5356fb877a6c2a6636ac88a upstream.
Checking for adc->ts_pend already claimed should be done with the
lock held.
Signed-off-by: Todd Poynor <[email protected]>
Acked-by: Ben Dooks <[email protected]>
Signed-off-by: Kukjin Kim <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/arm/plat-samsung/adc.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/arch/arm/plat-samsung/adc.c
+++ b/arch/arm/plat-samsung/adc.c
@@ -143,11 +143,13 @@ int s3c_adc_start(struct s3c_adc_client
return -EINVAL;
}
- if (client->is_ts && adc->ts_pend)
- return -EAGAIN;
-
spin_lock_irqsave(&adc->lock, flags);
+ if (client->is_ts && adc->ts_pend) {
+ spin_unlock_irqrestore(&adc->lock, flags);
+ return -EAGAIN;
+ }
+
client->channel = channel;
client->nr_samples = nr_samples;
Patches currently in stable-queue which might be from [email protected] are
queue-3.0/arm-samsung-fix-race-in-s3c_adc_start-for-adc.patch
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