[patch] Don't do transaction from GPE handler in poll mode.

acpi_patch (text/plain), 1.21 KB, created by Sergey Ovcharenko on 2008-11-28 20:57:06 UTC

From: Alexey Starikovskiy <[e-mail]>
Date: Tue, 11 Nov 2008 09:54:11 +0000 (+0300)
Subject: ACPI: EC: Don't do transaction from GPE handler in poll mode.
X-Git-Tag: v2.6.28-rc5~77^2^2
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=8517934ef6aaa28d6e055b98df65b31cedbd1372
ACPI: EC: Don't do transaction from GPE handler in poll mode.

Referencies: http://bugzilla.kernel.org/show_bug.cgi?id=12004

Signed-off-by: Alexey Starikovskiy <[e-mail]>
Signed-off-by: Len Brown <[e-mail]>
---

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index ab84f99..bd1af3e 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -581,9 +581,12 @@ static u32 acpi_ec_gpe_handler(void *data)
 	pr_debug(PREFIX "~~~> interrupt\n");
 	status = acpi_ec_read_status(ec);
 
-	gpe_transaction(ec, status);
-	if (ec_transaction_done(ec) && (status & ACPI_EC_FLAG_IBF) == 0)
-		wake_up(&ec->wait);
+	if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags)) {
+		gpe_transaction(ec, status);
+		if (ec_transaction_done(ec) &&
+		    (status & ACPI_EC_FLAG_IBF) == 0)
+			wake_up(&ec->wait);
+	}
 
 	ec_check_sci(ec, status);
 	if (!test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&