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authorAlexey Starikovskiy <astarikovskiy@suse.de>2008-03-19 02:45:12 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2008-03-18 21:32:24 -0700
commitd7a0e1f56472db0825e13f9dd39f0ad79b8c8b3e (patch)
treebfd24cd7181d4a6cfb39dab841600429d8dac9b9
parent2caf470363941b70212a9a843cae02e8e2f751d9 (diff)
Revert "ACPI: EC: Handle IRQ storm on Acer laptops"
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>
-rw-r--r--drivers/acpi/ec.c11
1 files changed, 0 insertions, 11 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index e7e197e3a4f..7222a18a031 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -129,7 +129,6 @@ static struct acpi_ec {
struct mutex lock;
wait_queue_head_t wait;
struct list_head list;
- atomic_t irq_count;
u8 handlers_installed;
} *boot_ec, *first_ec;
@@ -182,8 +181,6 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
{
int ret = 0;
- atomic_set(&ec->irq_count, 0);
-
if (unlikely(event == ACPI_EC_EVENT_OBF_1 &&
test_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags)))
force_poll = 1;
@@ -230,7 +227,6 @@ 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))
goto end;
- msleep(5);
}
}
pr_err(PREFIX "acpi_ec_wait timeout,"
@@ -533,13 +529,6 @@ static u32 acpi_ec_gpe_handler(void *data)
struct acpi_ec *ec = data;
pr_debug(PREFIX "~~~> interrupt\n");
- atomic_inc(&ec->irq_count);
- if (atomic_read(&ec->irq_count) > 5) {
- pr_err(PREFIX "GPE storm detected, disabling EC GPE\n");
- acpi_disable_gpe(NULL, ec->gpe, ACPI_ISR);
- clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
- return ACPI_INTERRUPT_HANDLED;
- }
clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags))
wake_up(&ec->wait);