tree db365d375c8a3009962279334cb2d98c6e4ddfdf
parent 0bd01aeeec0a9ba11adceb71aceed08ed276e3c0
author Mika Westerberg <mika.westerberg@linux.intel.com> 1313670229 +0300
committer Greg Kroah-Hartman <gregkh@suse.de> 1317667210 -0700

mmc: core: use non-reentrant workqueue for clock gating

commit 50a50f9248497484c678631a9c1a719f1aaeab79 upstream.

The default multithread workqueue can cause the same work to be executed
concurrently on a different CPUs. This isn't really suitable for clock
gating as it might already gated the clock and gating it twice results both
host->clk_old and host->ios.clock to be set to 0.

To prevent this from happening we use system_nrt_wq instead.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>