diff options
| author | James Bottomley <jejb@titanic.(none)> | 2005-11-10 08:29:07 -0600 |
|---|---|---|
| committer | James Bottomley <jejb@titanic.(none)> | 2005-11-10 08:29:07 -0600 |
| commit | 8a87a0b6313109d2fea87b1271d497c954ce2ca8 (patch) | |
| tree | 1b7ae51ff681e27118590e9cab4bf0ce38f5d80e /arch/i386/kernel/apm.c | |
| parent | e6a04466ba965875a6132700fabb2f2c0249c41a (diff) | |
| parent | 3b44f137b9a846c5452d9e6e1271b79b1dbcc942 (diff) | |
| download | op-kernel-dev-8a87a0b6313109d2fea87b1271d497c954ce2ca8.zip op-kernel-dev-8a87a0b6313109d2fea87b1271d497c954ce2ca8.tar.gz | |
Merge by hand (whitespace conflicts in libata.h)
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'arch/i386/kernel/apm.c')
| -rw-r--r-- | arch/i386/kernel/apm.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c index 86e80c5..003548b 100644 --- a/arch/i386/kernel/apm.c +++ b/arch/i386/kernel/apm.c @@ -769,8 +769,26 @@ static int set_system_power_state(u_short state) static int apm_do_idle(void) { u32 eax; + u8 ret = 0; + int idled = 0; + int polling; + + polling = test_thread_flag(TIF_POLLING_NRFLAG); + if (polling) { + clear_thread_flag(TIF_POLLING_NRFLAG); + smp_mb__after_clear_bit(); + } + if (!need_resched()) { + idled = 1; + ret = apm_bios_call_simple(APM_FUNC_IDLE, 0, 0, &eax); + } + if (polling) + set_thread_flag(TIF_POLLING_NRFLAG); + + if (!idled) + return 0; - if (apm_bios_call_simple(APM_FUNC_IDLE, 0, 0, &eax)) { + if (ret) { static unsigned long t; /* This always fails on some SMP boards running UP kernels. |
