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From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org,
	Linus Walleij <linus.walleij@linaro.org>,
	Jonas Jensen <jonas.jensen@gmail.com>
Subject: [PATCH 02/23] clocksource/drivers/fttmr010: Fix the clock handling
Date: Wed, 14 Jun 2017 14:39:23 +0200	[thread overview]
Message-ID: <1497443984-12371-2-git-send-email-daniel.lezcano@linaro.org> (raw)
In-Reply-To: <1497443984-12371-1-git-send-email-daniel.lezcano@linaro.org>

From: Linus Walleij <linus.walleij@linaro.org>

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

Tested-by: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 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 b4a6f1e..58ce017 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);
-- 
2.7.4

  reply	other threads:[~2017-06-14 12:40 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-14 12:38 [GIT PULL] clockevents for 4.13 Daniel Lezcano
2017-06-14 12:39 ` [PATCH 01/23] arm: aspeed: Add clock-names property to timer node Daniel Lezcano
2017-06-14 12:39   ` Daniel Lezcano [this message]
2017-06-14 12:39   ` [PATCH 03/23] clocksource/drivers/fttmr010: Merge FTTMR010 DT bindings Daniel Lezcano
2017-06-14 12:39   ` [PATCH 04/23] clocksource/drivers/fttmr010: Drop Gemini specifics Daniel Lezcano
2017-06-14 12:39   ` [PATCH 05/23] clocksource/drivers/fttmr010: Use state container Daniel Lezcano
2017-06-14 12:39   ` [PATCH 06/23] clocksource/drivers/fttmr010: Switch to use bitops Daniel Lezcano
2017-06-14 12:39   ` [PATCH 07/23] clocksource/drivers/fttmr010: Switch to use TIMER2 src Daniel Lezcano
2017-06-14 12:39   ` [PATCH 08/23] clocksource/drivers/fttmr010: Merge Moxa into FTTMR010 Daniel Lezcano
2017-06-14 12:39   ` [PATCH 09/23] clocksource/drivers/fttmr010: Add AST2500 compatible string Daniel Lezcano
2017-06-14 12:39   ` [PATCH 10/23] clocksource/drivers/fttmr010: Fix aspeed-2500 initialization Daniel Lezcano
2017-06-14 12:39   ` [PATCH 11/23] Revert "clockevents: Add a clkevt-of mechanism like clksrc-of" Daniel Lezcano
2017-06-14 12:39   ` [PATCH 14/23] clocksource/drivers: Rename CLOCKSOURCE_ACPI_DECLARE to TIMER_ACPI_DECLARE Daniel Lezcano
2017-06-14 12:39   ` [PATCH 15/23] clocksource/drivers: Rename clksrc table to timer Daniel Lezcano
2017-06-14 12:39   ` [PATCH 16/23] clocksource/drivers: Rename CLKSRC_OF to TIMER_OF Daniel Lezcano
2017-06-14 12:39   ` [PATCH 17/23] clocksource/drivers: Rename CLKSRC_ACPI to TIMER_ACPI Daniel Lezcano
2017-06-14 12:39   ` [PATCH 18/23] clocksource/drivers: Add an alias macro CLOCKSOURCE_OF_DECLARE Daniel Lezcano
2017-06-14 12:39   ` [PATCH 19/23] clocksource/drivers/fttmr010: Optimize sched_clock() Daniel Lezcano
2017-06-14 12:39   ` [PATCH 20/23] clocksource/drivers/tcb_clksrc: Save timer context on suspend/resume Daniel Lezcano
2017-06-14 12:39   ` [PATCH 21/23] clocksource/drivers: Add timer-of common init routine Daniel Lezcano
2017-06-14 12:39   ` [PATCH 22/23] clocksource/drivers/fttmr010: Implement delay timer Daniel Lezcano
2017-06-14 12:39   ` [PATCH 23/23] clocksource/drivers/fttmr010: Factor out clock read code Daniel Lezcano

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