diff options
| author | Maxim Yu. Osipov <mosipov@ilbers.de> | 2017-08-14 16:27:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-28 20:51:22 +0200 |
| commit | 81b289cc14ba349cc4707cf664aa1c72d7dff1d7 (patch) | |
| tree | e47e7b10e384a998668f5b2bb166e9a18ca64910 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py | |
| parent | 3d16ddc13c5e56726d05b4eceb766b06483e3686 (diff) | |
tty: serial: imx: disable irq after suspend
If any key on console is pressed when board is suspended,
board hangs.
Driver's interrupt handler must be guaranteed not to run while
resume/suspend_noirq() are being executed. See include/linux/pm.h
for details.
Tested on i.MX6 based board.
The idea of this fix is based on commit in official i.MX kernel tree:
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git
commit 81e8e7d91d81 ("tty: serial: imx: disable irq after suspend")
Disable rx irq after suspend to avoid interrupt coming in early resume.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Maxim Yu. Osipov <mosipov@ilbers.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py')
0 files changed, 0 insertions, 0 deletions