This is a note to let you know that I've just added the patch titled
regmap: Don't attempt block writes when syncing cache on single_rw devices
to the 3.16-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:
regmap-don-t-attempt-block-writes-when-syncing-cache-on-single_rw-devices.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5c1ebe7f73f9166893c3459915db8a09d6d1d715 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@xxxxxxxxxx>
Date: Wed, 27 Aug 2014 13:09:12 +0100
Subject: regmap: Don't attempt block writes when syncing cache on single_rw devices
From: Mark Brown <broonie@xxxxxxxxxx>
commit 5c1ebe7f73f9166893c3459915db8a09d6d1d715 upstream.
If the device can't support block writes then don't attempt to use raw
syncing which will automatically generate block writes for adjacent
registers, use the existing _single() block syncing implementation.
Reported-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
Tested-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/base/regmap/regcache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -698,7 +698,7 @@ int regcache_sync_block(struct regmap *m
unsigned int block_base, unsigned int start,
unsigned int end)
{
- if (regmap_can_raw_write(map))
+ if (regmap_can_raw_write(map) && !map->use_single_rw)
return regcache_sync_block_raw(map, block, cache_present,
block_base, start, end);
else
Patches currently in stable-queue which might be from broonie@xxxxxxxxxx are
queue-3.16/regmap-fix-handling-of-volatile-registers-for-format_write-chips.patch
queue-3.16/regmap-fix-regcache-debugfs-initialization.patch
queue-3.16/spi-dw-pci-fix-bug-when-regs-left-uninitialized.patch
queue-3.16/regmap-don-t-attempt-block-writes-when-syncing-cache-on-single_rw-devices.patch
queue-3.16/spi-dw-fix-kernel-crash-due-to-null-pointer-dereference.patch
queue-3.16/spi-omap-mcspi-fix-the-spi-task-hangs-waiting-dma_rx.patch
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