linux-kernel - [PATCH AUTOSEL 5.4 036/134] clocksource/drivers/timer-of: Use unique device name instead of timer

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Message-Id: <20191211151150.19073-36-sashal@kernel.org>
Date:   Wed, 11 Dec 2019 10:10:12 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Rob Herring <robh@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 5.4 036/134] clocksource/drivers/timer-of: Use unique device name instead of timer

From: Geert Uytterhoeven <geert+renesas@...der.be>

[ Upstream commit 4411464d6f8b5e5759637235a6f2b2a85c2be0f1 ]

If a hardware-specific driver does not provide a name, the timer-of core
falls back to device_node.name.  Due to generic DT node naming policies,
that name is almost always "timer", and thus doesn't identify the actual
timer used.

Fix this by using device_node.full_name instead, which includes the unit
addrees.

Example impact on /proc/timer_list:

    -Clock Event Device: timer
    +Clock Event Device: timer@...ec400

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Link: https://lore.kernel.org/r/20191016144747.29538-3-geert+renesas@glider.be
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/clocksource/timer-of.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c
index 11ff701ff4bb9..a3c73e972fce1 100644
--- a/drivers/clocksource/timer-of.c
+++ b/drivers/clocksource/timer-of.c
@@ -192,7 +192,7 @@ int __init timer_of_init(struct device_node *np, struct timer_of *to)
 	}
 
 	if (!to->clkevt.name)
-		to->clkevt.name = np->name;
+		to->clkevt.name = np->full_name;
 
 	to->np = np;
 
-- 
2.20.1