linux.git/drivers/acpi/ec.c, branch v2.6.25 Linux kernel source tree Revert "ACPI: EC: Handle IRQ storm on Acer laptops" 2008-03-19T04:32:24+00:00 Alexey Starikovskiy astarikovskiy@suse.de 2008-03-18T23:45:12+00:00 d7a0e1f56472db0825e13f9dd39f0ad79b8c8b3e This reverts commit 2c81ce4c9c37b910210f2640c28e98a0c398dc26. It caused several new troubles (eg suspend slowdown bisected down to this patch by Pavel Machek), so just revert it for now. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Cc: Pavel Machek <pavel@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
This reverts commit 2c81ce4c9c37b910210f2640c28e98a0c398dc26.

It caused several new troubles (eg suspend slowdown bisected down to
this patch by Pavel Machek), so just revert it for now.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Cc: Pavel Machek <pavel@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge branches 'release', 'bugzilla-8570', 'bugzilla-9966', 'bugzilla-9998', 'bugzilla-10100', 'bugzilla-10132', 'bugzilla-10138' and 'bugzilla-10206' into release 2008-03-13T05:59:45+00:00 Len Brown len.brown@intel.com 2008-03-13T05:59:45+00:00 1ca721cdb748ba72c47e9c661d54696db3cde796 






ACPI: EC: Handle IRQ storm on Acer laptops
2008-03-11T17:30:00+00:00

Alexey Starikovskiy
astarikovskiy@suse.de

2008-03-11T17:30:00+00:00

2c81ce4c9c37b910210f2640c28e98a0c398dc26

On some Acer systems, the HW fails to clear the GPE source,
causing an interrupt storm.

So in EC interrupt mode, we count how many interrupts we
receive when waiting.  If we get more than 5, we give
up on interrupt mode and revert to polling mode.

Also, for polling mode to work on Acers, we need
to insert a delay.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>





On some Acer systems, the HW fails to clear the GPE source,
causing an interrupt storm.

So in EC interrupt mode, we count how many interrupts we
receive when waiting.  If we get more than 5, we give
up on interrupt mode and revert to polling mode.

Also, for polling mode to work on Acers, we need
to insert a delay.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>







Revert "ACPI: EC: Use proper handle for boot EC"
2008-03-11T04:27:16+00:00

Len Brown
len.brown@intel.com

2008-03-11T04:27:16+00:00

4af8e10a6c57e7292862bd1703712f0565c7e429

This reverts commit 208c70a45624400fafd7511b96bc426bf01f8f5e.

http://bugzilla.kernel.org/show_bug.cgi?id=10100

Signed-off-by: Len Brown <len.brown@intel.com>





This reverts commit 208c70a45624400fafd7511b96bc426bf01f8f5e.

http://bugzilla.kernel.org/show_bug.cgi?id=10100

Signed-off-by: Len Brown <len.brown@intel.com>







ACPI: EC: Use proper handle for boot EC
2008-02-14T20:58:47+00:00

Alexey Starikovskiy
astarikovskiy@suse.de

2008-02-14T20:58:47+00:00

208c70a45624400fafd7511b96bc426bf01f8f5e

Fall back to ACPI_ROOT_HANDLE only in case of error.

ACPI: EC: EC description table is found, configuring boot EC
ACPI Error (evregion-0316): No handler for Region [ECOR] (ffff81007a651620) [EmbeddedControl] [20070126]
ACPI Error (exfldio-0289): Region EmbeddedControl(3) has no handler [20070126]

http://bugzilla.kernel.org/show_bug.cgi?id=9916

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>





Fall back to ACPI_ROOT_HANDLE only in case of error.

ACPI: EC: EC description table is found, configuring boot EC
ACPI Error (evregion-0316): No handler for Region [ECOR] (ffff81007a651620) [EmbeddedControl] [20070126]
ACPI Error (exfldio-0289): Region EmbeddedControl(3) has no handler [20070126]

http://bugzilla.kernel.org/show_bug.cgi?id=9916

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>







Merge branches 'release', 'bugzilla-6217', 'bugzilla-6629', 'bugzilla-6933', 'bugzilla-7186', 'bugzilla-8269', 'bugzilla-8570', 'bugzilla-9139', 'bugzilla-9277', 'bugzilla-9341', 'bugzilla-9444', 'bugzilla-9614', 'bugzilla-9643' and 'bugzilla-9644' into release
2008-02-07T08:09:43+00:00

Len Brown
len.brown@intel.com

2008-02-07T08:09:43+00:00

c64768a7d671bcde80bca2aed93f9e07edc069c3












ACPI: EC: "DEBUG" needs to be defined earlier
2008-01-24T03:34:09+00:00

Márton Németh
nm127@freemail.hu

2008-01-24T03:34:09+00:00

d772b3b323a15588a757f5af28e51a57d0d2f622

The "DEBUG" symbol needs to be defined before #including <linux/kernel.h> to
get the pr_debug() working.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Len Brown <len.brown@intel.com>





The "DEBUG" symbol needs to be defined before #including <linux/kernel.h> to
get the pr_debug() working.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Len Brown <len.brown@intel.com>







ACPI: EC: add leading zeros to debug messages
2008-01-24T03:33:06+00:00

Márton Németh
nm127@freemail.hu

2008-01-24T03:33:06+00:00

86dae0154a49b67c908faffeb33ba37eddceba74

Add leading zeros to pr_debug() calls. For example if x=0x0a, the format
"0x%2x" will result the string "0x a", the format "0x%2.2x" will result "0x0a".

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Len Brown <len.brown@intel.com>





Add leading zeros to pr_debug() calls. For example if x=0x0a, the format
"0x%2x" will result the string "0x a", the format "0x%2.2x" will result "0x0a".

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Len Brown <len.brown@intel.com>







ACPI: EC: fix dmesg spam regression
2008-01-24T03:28:34+00:00

Alexey Starikovskiy
astarikovskiy@suse.de

2008-01-24T03:28:34+00:00

03d1d99c55649ca641b86d2e3489b167ede1671a

Return OBF_1 optimization workaround

http://bugzilla.kernel.org/show_bug.cgi?id=8459

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>





Return OBF_1 optimization workaround

http://bugzilla.kernel.org/show_bug.cgi?id=8459

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>







ACPI: EC: Some hardware requires burst mode to operate properly
2008-01-11T01:50:12+00:00

Alexey Starikovskiy
astarikovskiy@suse.de

2008-01-10T23:42:57+00:00

b3b233c7d948a5f55185fb5a1b248157b948a1e5

Burst mode temporary (50 ms) locks EC to do only transactions with
driver, without it some hardware returns abstract garbage.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9341

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>





Burst mode temporary (50 ms) locks EC to do only transactions with
driver, without it some hardware returns abstract garbage.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9341

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>