From 50a50f9248497484c678631a9c1a719f1aaeab79 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Thu, 18 Aug 2011 15:23:49 +0300 Subject: [PATCH] mmc: core: use non-reentrant workqueue for clock gating 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 Reviewed-by: Linus Walleij Tested-by: Chris Ball Cc: Signed-off-by: Chris Ball --- drivers/mmc/core/host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 96a26b2bf5f..793d0a0dad8 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -179,7 +179,7 @@ void mmc_host_clk_release(struct mmc_host *host) host->clk_requests--; if (mmc_host_may_gate_card(host->card) && !host->clk_requests) - schedule_work(&host->clk_gate_work); + queue_work(system_nrt_wq, &host->clk_gate_work); spin_unlock_irqrestore(&host->clk_lock, flags); } -- 2.41.0