linux/drivers/clocksource, branch v2.6.27.6

clocksource, acpi_pm.c: fix check for monotonicity

2008-09-11T09:14:29Z

Actually check the monotonicity of the ACPI PMTMR ten times, only delay for 0.9 miliseconds at most, and bail out early if some problem is determined. Reported-by: Jochen Voß Signed-off-by: Dominik Brodowski Signed-off-by: Ingo Molnar

clocksource, acpi_pm.c: check for monotonicity

2008-09-06T13:33:33Z

The current check for monotonicity is way too weak: Andreas Mohr reports ( http://lkml.org/lkml/2008/8/10/77 ) that on one of his test systems the current check only triggers in 50% of all cases, leading to catastrophic timer behaviour. To fix this issue, expand the check for monotonicity by doing ten consecutive tests instead of one. Signed-off-by: Dominik Brodowski Signed-off-by: Andrew Morton Signed-off-by: Ingo Molnar

clocksource, acpi_pm.c: use proper read function also in errata mode

2008-09-06T13:33:31Z

On all hardware (some Intel ICH4, PIIX4 and PIIX4E chipsets) affected by a hardware errata there's about a 4.2% chance that initialization of the ACPI PMTMR fails. On those chipsets, we need to read out the timer value at least three times to get a correct result, for every once in a while (i.e. within a 3 ns window every 69.8 ns) the read returns a bogus result. During normal operation we work around this issue, but during initialization reading a bogus value may lead to -EINVAL even though the hardware is usable. Thanks to Andreas Mohr for spotting this issue. Signed-off-by: Dominik Brodowski Signed-off-by: Andrew Morton Signed-off-by: Ingo Molnar

Fix printk format warning in clocksource/acpi_pm.c

2008-07-15T18:01:39Z

For real, this time. The earlier attempt just moved the warning around. Signed-off-by: Linus Torvalds

acpi_pm clccksource: fix printk format warning

2008-07-12T03:29:08Z

Fix printk format warning in acpi_pm clocksource: linux-next-20080711/drivers/clocksource/acpi_pm.c:231: warning: format '%04lx' expects type 'long unsigned int', but argument 2 has type 'u32' Signed-off-by: Randy Dunlap Cc: akpm Signed-off-by: Thomas Gleixner

pmtmr: allow command line override of ioport

2008-07-10T05:10:00Z

Stupid BIOSes do not tell us about the PMTimer, but we might know where it is. Signed-off-by: Thomas Gleixner

tclib: Fix compile warnings

2008-03-13T21:53:29Z

Does that have something analagous to this "remove warnings" patch? Seems setup_clkevents() no longer needs a t0_clk parameter either... Signed-off-by: Haavard Skinnemoen

atmel_tc clocksource/clockevent code

2008-03-04T12:42:24Z

Clocksource and clockevent device based on the Atmel TC blocks. The clockevent device handles both periodic and oneshot modes, so this enables NO_HZ and high res timers on some platforms that previously couldn't use those mechanisms. This works on both AVR32 and AT91 chips, given relevant patches for tclib support (always) and clockevents (or else this will only look like a higher precision clocksource). It's an updated and modularized version of an AT91-only patch that has circulated for some time now. Changes relative to the original patch: * Update to use new tclib API * Replace open-coded do-while loop using goto with a real do-while loop * Minor irq handler optimization: Load register base address from dev_id instead of a global variable. * Aggressively turn off clocks when the clockevent isn't being used * Include the clockevent code on AT91RM9200 as well. The rating is lower than the System Timer, so the clock will usually stay off. * Don't assume that the number of clocks is always equal to the number of irqs. Signed-off-by: David Brownell Signed-off-by: Haavard Skinnemoen

x86_64: fix typo in acpi_pm.c

2007-07-22T01:37:12Z

Signed-off-by: Alessio Igor Bogani Cc: john stultz Signed-off-by: Andrew Morton Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds

PCI: Change all drivers to use pci_device->revision

2007-07-11T23:02:10Z

Instead of all drivers reading pci config space to get the revision ID, they can now use the pci_device->revision member. This exposes some issues where drivers where reading a word or a dword for the revision number, and adding useless error-handling around the read. Some drivers even just read it for no purpose of all. In devices where the revision ID is being copied over and used in what appears to be the equivalent of hotpath, I have left the copy code and the cached copy as not to influence the driver's performance. Compile tested with make all{yes,mod}config on x86_64 and i386. Signed-off-by: Auke Kok Acked-by: Dave Jones Signed-off-by: Greg Kroah-Hartman