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| author | Paul Walmsley <paul@pwsan.com> | 2011-02-23 03:59:49 +0100 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2011-02-24 21:21:21 +0100 |
| commit | cbc9438075ca9dee3f39a2e7310f81c304b40359 (patch) | |
| tree | eac5f9ed25b96e64a664f5af441e0c238e44cd18 /arch/x86/include/asm/smp.h | |
| parent | OMAP2+: mailbox: fix lookups for multiple mailboxes (diff) | |
| download | linux-cbc9438075ca9dee3f39a2e7310f81c304b40359.tar.xz linux-cbc9438075ca9dee3f39a2e7310f81c304b40359.zip | |
OMAP2+: clocksource: fix crash on boot when !CONFIG_OMAP_32K_TIMER
OMAP2+ kernels built without CONFIG_OMAP_32K_TIMER crash on boot after the
2.6.38 sched_clock changes:
[ 0.000000] OMAP clockevent source: GPTIMER1 at 13000000 Hz
[ 0.000000] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[ 0.000000] pgd = c0004000
[ 0.000000] [00000000] *pgd=00000000
[ 0.000000] Internal error: Oops: 80000005 [#1] SMP
[ 0.000000] last sysfs file:
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 Not tainted (2.6.38-rc5-00057-g04aa67d #152)
[ 0.000000] PC is at 0x0
[ 0.000000] LR is at sched_clock_poll+0x2c/0x3c
Without CONFIG_OMAP_32K_TIMER, the kernel has an clockevent and
clocksource resolution about three orders of magnitude higher than
with CONFIG_OMAP_32K_TIMER set. The tradeoff is that the lowest
power consumption states are not available.
Fix by calling init_sched_clock() from the GPTIMER clocksource init code.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/x86/include/asm/smp.h')
0 files changed, 0 insertions, 0 deletions