Commit-ID: acbf6d21ac81195071b97ebb114b0b37bd9fcc86
Gitweb: http://git.kernel.org/tip/acbf6d21ac81195071b97ebb114b0b37bd9fcc86
Author: David Jander <david@xxxxxxxxxxx>
AuthorDate: Thu, 8 May 2014 12:06:25 +0200
Committer: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
CommitDate: Thu, 22 May 2014 18:54:58 +0200
clocksource: tcb_clksrc: Make tc_mode interrupt safe
tc_mode() can be called from interrupt context and thus must not call
clk_*prepare*() functions.
Signed-off-by: David Jander <david@xxxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Acked-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx>
Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
---
drivers/clocksource/tcb_clksrc.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c
index 00fdd11..a8d7ea1 100644
--- a/drivers/clocksource/tcb_clksrc.c
+++ b/drivers/clocksource/tcb_clksrc.c
@@ -100,7 +100,7 @@ static void tc_mode(enum clock_event_mode m, struct clock_event_device *d)
|| tcd->clkevt.mode == CLOCK_EVT_MODE_ONESHOT) {
__raw_writel(0xff, regs + ATMEL_TC_REG(2, IDR));
__raw_writel(ATMEL_TC_CLKDIS, regs + ATMEL_TC_REG(2, CCR));
- clk_disable_unprepare(tcd->clk);
+ clk_disable(tcd->clk);
}
switch (m) {
@@ -109,7 +109,7 @@ static void tc_mode(enum clock_event_mode m, struct clock_event_device *d)
* of oneshot, we get lower overhead and improved accuracy.
*/
case CLOCK_EVT_MODE_PERIODIC:
- clk_prepare_enable(tcd->clk);
+ clk_enable(tcd->clk);
/* slow clock, count up to RC, then irq and restart */
__raw_writel(timer_clock
@@ -126,7 +126,7 @@ static void tc_mode(enum clock_event_mode m, struct clock_event_device *d)
break;
case CLOCK_EVT_MODE_ONESHOT:
- clk_prepare_enable(tcd->clk);
+ clk_enable(tcd->clk);
/* slow clock, count up to RC, then irq and stop */
__raw_writel(timer_clock | ATMEL_TC_CPCSTOP
@@ -194,7 +194,7 @@ static int __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
ret = clk_prepare_enable(t2_clk);
if (ret)
return ret;
- clk_disable_unprepare(t2_clk);
+ clk_disable(t2_clk);
clkevt.regs = tc->regs;
clkevt.clk = t2_clk;
--
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