I have very strong evidence that the issue was introduced by kernel commit 1b7fc5aae8867046f8d3d45808309d5b7f2e036a
| Author: Alexey Starikovskiy <[EMAIL PROTECTED]> 2008-06-06 17:49:33 | Committer: Len Brown <[EMAIL PROTECTED]> 2008-06-12 01:13:45 | Branches: git-v2.6.26, master, remotes/origin/master | Follows: v2.6.26-rc5 | Precedes: v2.6.26-rc6 | | ACPI: EC: Use msleep instead of udelay while waiting for event. | | http://bugzilla.kernel.org/show_bug.cgi?id=10724 | | Signed-off-by: Alexey Starikovskiy <[EMAIL PROTECTED]> | Signed-off-by: Len Brown <[EMAIL PROTECTED]> | | ------------------------------ drivers/acpi/ec.c ------------------------------ | index 0924992..5622aee 100644 | @@ -194,7 +194,7 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll) | while (time_before(jiffies, delay)) { | if (acpi_ec_check_status(ec, event)) | return 0; | - udelay(ACPI_EC_UDELAY); | + msleep(1); | } | } | pr_err(PREFIX "acpi_ec_wait timeout, status = 0x%2.2x, event = %s\n", | Undoing this patch in 2.6.26.3 still heals the issue. (This does not mean that undoing it is the right fix for it. See later messages). -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
