linux-kernel - [PATCH 08/17] ARM: davinci: dm644x: WARN() if clk

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Date:   Fri, 11 Jan 2019 18:21:25 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Sekhar Nori <nsekhar@...com>, Kevin Hilman <khilman@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH 08/17] ARM: davinci: dm644x: WARN() if clk_get() fails

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

Currently the timer code checks if the clock pointer passed to it is
good (!IS_ERR(clk)). The new clocksource driver expects the clock to
be functional and doesn't perform any checks so emit a warning if
clk_get() fails.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 arch/arm/mach-davinci/dm644x.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
index 38f92b7d413e..85d69ac1bd70 100644
--- a/arch/arm/mach-davinci/dm644x.c
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -681,6 +681,7 @@ void __init dm644x_init_time(void)
 	dm644x_psc_init(NULL, psc);
 
 	clk = clk_get(NULL, "timer0");
+	WARN(IS_ERR(clk), "Unable to get the timer clock\n");
 
 	davinci_timer_init(clk);
 }
-- 
2.19.1