On 16/03/15 10:42, gregkh@xxxxxxxxxxxxxxxxxxx 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 <stable@xxxxxxxxxxxxxxx>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 7e4f1e777814c6916b513b5dc90e030ee4e25f04 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx> 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 <hsweeten@xxxxxxxxxxxxxxxxxxx> Reviewed-by: Ian Abbott <abbotti@xxxxxxxxx> Cc: stable <stable@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> 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.
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