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ASoC: atmel-ssc: remove clk_disable_unprepare call from critical section 

clk_prepare/unprepare (and indirectly clk_prepare_enable/disable_unprepare)
may sleep and thus cannot be called in critical section.

This patch fix a bug introduced by commit
6f0d94790e where clk_disable_unprepare was
called with user_lock hold.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
hifive-unleashed-5.1
Boris BREZILLON 2013-07-18 09:48:40 +02:00 committed by Mark Brown
parent ad81f0545e
commit 9a9b1c618d
1 changed files with 8 additions and 3 deletions
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11
drivers/misc/atmel-ssc.c
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@ -66,14 +66,19 @@ EXPORT_SYMBOL(ssc_request);
void ssc_free(struct ssc_device *ssc)
{
bool disable_clk = true;
spin_lock(&user_lock);
if (ssc->user) {
if (ssc->user)
ssc->user--;
clk_disable_unprepare(ssc->clk);
} else {
else {
disable_clk = false;
dev_dbg(&ssc->pdev->dev, "device already free\n");
}
spin_unlock(&user_lock);
if (disable_clk)
clk_disable_unprepare(ssc->clk);
}
EXPORT_SYMBOL(ssc_free);