[PATCH 1/8] clocksource/drivers/fttmr010: Fix the clock handling

From: Linus Walleij
Date: Wed May 17 2017 - 10:06:30 EST


We need to also prepare and enable the clock we are using to get
the right reference count and avoid it being shut off.

Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
drivers/clocksource/timer-fttmr010.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/clocksource/timer-fttmr010.c b/drivers/clocksource/timer-fttmr010.c
index b4a6f1e4bc54..58ce017e4a65 100644
--- a/drivers/clocksource/timer-fttmr010.c
+++ b/drivers/clocksource/timer-fttmr010.c
@@ -238,12 +238,18 @@ static int __init fttmr010_timer_of_init(struct device_node *np)
* and using EXTCLK is not supported in the driver.
*/
struct clk *clk;
+ int ret;

clk = of_clk_get_by_name(np, "PCLK");
if (IS_ERR(clk)) {
- pr_err("could not get PCLK");
+ pr_err("could not get PCLK\n");
return PTR_ERR(clk);
}
+ ret = clk_prepare_enable(clk);
+ if (ret) {
+ pr_err("failed to enable PCLK\n");
+ return ret;
+ }
tick_rate = clk_get_rate(clk);

return fttmr010_timer_common_init(np);
--
2.9.3