23 lines
874 B
Diff
23 lines
874 B
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Wed, 21 Feb 2018 13:40:12 +0100
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Subject: [PATCH] clocksource: mips-gic-timer: fix clocksource counter width
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This code needs to use ffs instead of fls on the mask to determine the
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shift for reading the GIC_CONFIG_COUNTBITS field.
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Fixes: e07127a077c7 ("clocksource: mips-gic-timer: Use new GIC accessor functions")
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Cc: Paul Burton <paul.burton@imgtec.com>
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/drivers/clocksource/mips-gic-timer.c
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+++ b/drivers/clocksource/mips-gic-timer.c
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@@ -164,7 +164,7 @@ static int __init __gic_clocksource_init
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/* Set clocksource mask. */
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count_width = read_gic_config() & GIC_CONFIG_COUNTBITS;
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- count_width >>= __fls(GIC_CONFIG_COUNTBITS);
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+ count_width >>= __ffs(GIC_CONFIG_COUNTBITS);
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count_width *= 4;
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count_width += 32;
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gic_clocksource.mask = CLOCKSOURCE_MASK(count_width);
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