This is a note to let you know that I've just added the patch titled
iio: buffer: Fix demux table creation
to the 3.15-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:
iio-buffer-fix-demux-table-creation.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 61bd55ce1667809f022be88da77db17add90ea4e Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
Date: Thu, 17 Jul 2014 16:59:00 +0100
Subject: iio: buffer: Fix demux table creation
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
commit 61bd55ce1667809f022be88da77db17add90ea4e upstream.
When creating the demux table we need to iterate over the selected scan mask for
the buffer to get the samples which should be copied to destination buffer.
Right now the code uses the mask which contains all active channels, which means
the demux table contains entries which causes it to copy all the samples from
source to destination buffer one by one without doing any demuxing.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/industrialio-buffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -949,7 +949,7 @@ static int iio_buffer_update_demux(struc
/* Now we have the two masks, work from least sig and build up sizes */
for_each_set_bit(out_ind,
- indio_dev->active_scan_mask,
+ buffer->scan_mask,
indio_dev->masklength) {
in_ind = find_next_bit(indio_dev->active_scan_mask,
indio_dev->masklength,
Patches currently in stable-queue which might be from lars@xxxxxxxxxx are
queue-3.15/iio-buffer-fix-demux-table-creation.patch
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