On 16/03/15 10:42, [email protected] wrote:

The patch below does not apply to the 3.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

 From 7e4f1e777814c6916b513b5dc90e030ee4e25f04 Mon Sep 17 00:00:00 2001
From: H Hartley Sweeten <[email protected]>
Date: Mon, 23 Feb 2015 13:22:44 -0700
Subject: [PATCH] staging: comedi: comedi_isadma: fix "stalled" detect in
  comedi_isadma_disable_on_sample()

The "stalled" variable this function is used to detect if the DMA operation
is stalled while trying to disable DMA on a full comedi sample. The reset
of this variable should only occur when the remaining bytes of the DMA
transfer does not equal the remaining bytes from the last check.

Reported-by: coverity (CID 1271132)
Signed-off-by: H Hartley Sweeten <[email protected]>
Reviewed-by: Ian Abbott <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

diff --git a/drivers/staging/comedi/drivers/comedi_isadma.c 
b/drivers/staging/comedi/drivers/comedi_isadma.c
index dbdea71d6b95..e856f01ca077 100644

This patch can be safely ignored. It fixes commit 20a1ea7d6ba1 which introduced comedi_isadma.c and never made it into 3.19.

--
-=( Ian Abbott @ MEV Ltd.    E-mail: <[email protected]> )=-
-=(                          Web: http://www.mev.co.uk/  )=-
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