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mmc: sunxi: fix timeout in sunxi_mmc_oclk_onoff

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The 250ms timeout is too short.

On my system enabling the oclk takes under 50ms and disabling slightly
over 100ms when idle. Under load disabling the clock can take over
350ms.

This does not make mmc clock gating look like good option to have on
sunxi but the system should not crash with mmc clock gating enabled
nonetheless.

This patch sets the timeout to 750ms.

Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Michal Suchanek 2015-08-12 15:29:31 +02:00 committed by Ulf Hansson
parent 1880d8f6fb
commit 7bb9c24435
1 changed files with 1 additions and 1 deletions
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2
drivers/mmc/host/sunxi-mmc.c
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@ -595,7 +595,7 @@ static irqreturn_t sunxi_mmc_handle_manual_stop(int irq, void *dev_id)
static int sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en)
{
unsigned long expire = jiffies + msecs_to_jiffies(250);
unsigned long expire = jiffies + msecs_to_jiffies(750);
u32 rval;
rval = mmc_readl(host, REG_CLKCR);