This is a note to let you know that I've just added the patch titled
staging: comedi: fix comedi_nsamples_left.
to the 4.9-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:
staging-comedi-fix-comedi_nsamples_left.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a42ae5905140c324362fe5036ae1dbb16e4d359c Mon Sep 17 00:00:00 2001
From: Frank Mori Hess <fmh6jj@xxxxxxxxx>
Date: Thu, 15 Feb 2018 15:13:42 -0500
Subject: staging: comedi: fix comedi_nsamples_left.
From: Frank Mori Hess <fmh6jj@xxxxxxxxx>
commit a42ae5905140c324362fe5036ae1dbb16e4d359c upstream.
A rounding error was causing comedi_nsamples_left to
return the wrong value when nsamples was not a multiple
of the scan length.
Cc: <stable@xxxxxxxxxxxxxxx> # v4.4+
Signed-off-by: Frank Mori Hess <fmh6jj@xxxxxxxxx>
Reviewed-by: Ian Abbott <abbotti@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -484,8 +484,7 @@ unsigned int comedi_nsamples_left(struct
struct comedi_cmd *cmd = &async->cmd;
if (cmd->stop_src == TRIG_COUNT) {
- unsigned int nscans = nsamples / cmd->scan_end_arg;
- unsigned int scans_left = __comedi_nscans_left(s, nscans);
+ unsigned int scans_left = __comedi_nscans_left(s, cmd->stop_arg);
unsigned int scan_pos =
comedi_bytes_to_samples(s, async->scan_progress);
unsigned long long samples_left = 0;
Patches currently in stable-queue which might be from fmh6jj@xxxxxxxxx are
queue-4.9/staging-comedi-fix-comedi_nsamples_left.patch