https://bugzilla.kernel.org/show_bug.cgi?id=15946
Lan Tianyu <tianyu....@intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tianyu....@intel.com
--- Comment #103 from Lan Tianyu <tianyu....@intel.com> 2013-04-11 05:55:34 ---
Could you try the follow patch and attach the dmesg with open ec debug patch?
Thanks
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index d45b287..6376fd2 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -223,7 +223,7 @@ static int ec_check_sci_sync(struct acpi_ec *ec, u8 state)
static int ec_poll(struct acpi_ec *ec)
{
unsigned long flags;
- int repeat = 2; /* number of command restarts */
+ int repeat = 4; /* number of command restarts */
while (repeat--) {
unsigned long delay = jiffies +
msecs_to_jiffies(ec_delay);
@@ -241,8 +241,10 @@ static int ec_poll(struct acpi_ec *ec)
}
advance_transaction(ec, acpi_ec_read_status(ec));
} while (time_before(jiffies, delay));
- if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF)
- break;
+
+ //if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF)
+ // break;
+ pr_info(PREFIX "%s: repeat %d \n", __func__, 4 - repeat);
pr_debug(PREFIX "controller reset, restart transaction\n");
spin_lock_irqsave(&ec->lock, flags);
start_transaction(ec);
Open ec debug patch.
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index d45b287..34189f4 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -27,7 +27,7 @@
*/
/* Uncomment next line to get verbose printout */
-/* #define DEBUG */
+#define DEBUG
#include <linux/kernel.h>
#include <linux/module.h>
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