target/linux/generic/pending-4.14/101-clocksource-mips-gic-timer-fix-clocksource-counter-w.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Wed, 21 Feb 2018 13:40:12 +0100
   3 Subject: [PATCH] clocksource: mips-gic-timer: fix clocksource counter width
   4
   5 This code needs to use ffs instead of fls on the mask to determine the
   6 shift for reading the GIC_CONFIG_COUNTBITS field.
   7
   8 Fixes: e07127a077c7 ("clocksource: mips-gic-timer: Use new GIC accessor functions")
   9 Cc: Paul Burton <paul.burton@imgtec.com>
  10 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  11 ---
  12
  13 --- a/drivers/clocksource/mips-gic-timer.c
  14 +++ b/drivers/clocksource/mips-gic-timer.c
  15 @@ -164,7 +164,7 @@ static int __init __gic_clocksource_init
  16
  17         /* Set clocksource mask. */
  18         count_width = read_gic_config() & GIC_CONFIG_COUNTBITS;
  19 -       count_width >>= __fls(GIC_CONFIG_COUNTBITS);
  20 +       count_width >>= __ffs(GIC_CONFIG_COUNTBITS);
  21         count_width *= 4;
  22         count_width += 32;
  23         gic_clocksource.mask = CLOCKSOURCE_MASK(count_width);