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ARM: 8245/1: pcmcia: soc-common: enable/disable socket clocks

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Call clk_prepare_enable() during hw_init() and clk_disable_unprepare()
during hw_shutdown() to ensure that the clock rates returned by
clk_get_rate() are correct.

It is safe to call enable/disable functions even on NULL clock, so this
patch will not break cases when the socket clock is not set.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Dmitry Eremin-Solenikov 2014-12-03 18:37:10 +01:00 committed by Russell King
parent 23834a4116
commit 0821c3bc5d
1 changed files with 4 additions and 0 deletions
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4
drivers/pcmcia/soc_common.c
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@ -120,6 +120,8 @@ static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt,
if (skt->ops->hw_shutdown)
skt->ops->hw_shutdown(skt);
clk_disable_unprepare(skt->clk);
}
static void soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
@ -131,6 +133,8 @@ static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
int ret = 0, i;
clk_prepare_enable(skt->clk);
if (skt->ops->hw_init) {
ret = skt->ops->hw_init(skt);
if (ret)