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authorDmitry Eremin-Solenikov <dbaryshkov@gmail.com>2014-12-03 20:37:10 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-12-05 19:30:26 +0300
commit0821c3bc5df805aef1f5989b7a7dacc2491a0e5b (patch)
tree492358fbec814691376470d201ce75c0de5b54fa /drivers/pcmcia
parent23834a4116cd468d62e1092234e46ec1919a9e86 (diff)
downloadlinux-0821c3bc5df805aef1f5989b7a7dacc2491a0e5b.tar.xz
ARM: 8245/1: pcmcia: soc-common: enable/disable socket clocks
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>
Diffstat (limited to 'drivers/pcmcia')
-rw-r--r--drivers/pcmcia/soc_common.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pcmcia/soc_common.c b/drivers/pcmcia/soc_common.c
index a2bc6ee1702e..933f4657515b 100644
--- a/drivers/pcmcia/soc_common.c
+++ b/drivers/pcmcia/soc_common.c
@@ -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)