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