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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2020-03-06 00:17:55 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2020-03-14 11:04:17 +0100
commitb1e14999a4b7a74cc851c17f53fb5fce27a43ab8 (patch)
treefb4497f082a645ef13d46a1a5898f53cb07ac5ec /drivers/acpi
parent65a691f5f8f0bb63d6a82eec7b0ffd193d8d8a5f (diff)
downloadlinux-b1e14999a4b7a74cc851c17f53fb5fce27a43ab8.tar.bz2
ACPI: EC: Eliminate EC_FLAGS_QUERY_HANDSHAKE
The EC_FLAGS_QUERY_HANDSHAKE switch is never set in the current code (the only function setting it is defined under #if 0) and has no effect whatever, so eliminate it and drop the code depending on it. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/ec.c35
1 files changed, 3 insertions, 32 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 8025a070335e..9c7410588a27 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -182,7 +182,6 @@ static bool boot_ec_is_ecdt = false;
static struct workqueue_struct *ec_wq;
static struct workqueue_struct *ec_query_wq;
-static int EC_FLAGS_QUERY_HANDSHAKE; /* Needs QR_EC issued when SCI_EVT set */
static int EC_FLAGS_CORRECT_ECDT; /* Needs ECDT port address correction */
static int EC_FLAGS_IGNORE_DSDT_GPE; /* Needs ECDT GPE as correction setting */
static int EC_FLAGS_CLEAR_ON_RESUME; /* Needs acpi_ec_clear() on boot/resume */
@@ -690,21 +689,9 @@ static void advance_transaction(struct acpi_ec *ec)
wakeup = true;
}
goto out;
- } else {
- if (EC_FLAGS_QUERY_HANDSHAKE &&
- !(status & ACPI_EC_FLAG_SCI) &&
- (t->command == ACPI_EC_COMMAND_QUERY)) {
- ec_transaction_transition(ec, ACPI_EC_COMMAND_POLL);
- t->rdata[t->ri++] = 0x00;
- ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE);
- ec_dbg_evt("Command(%s) completed by software",
- acpi_ec_cmd_string(ACPI_EC_COMMAND_QUERY));
- wakeup = true;
- } else if ((status & ACPI_EC_FLAG_IBF) == 0) {
- acpi_ec_write_cmd(ec, t->command);
- ec_transaction_transition(ec, ACPI_EC_COMMAND_POLL);
- } else
- goto err;
+ } else if (!(status & ACPI_EC_FLAG_IBF)) {
+ acpi_ec_write_cmd(ec, t->command);
+ ec_transaction_transition(ec, ACPI_EC_COMMAND_POLL);
goto out;
}
err:
@@ -1805,22 +1792,6 @@ static void __init acpi_ec_ecdt_start(void)
acpi_bus_register_early_device(ACPI_BUS_TYPE_ECDT_EC);
}
-#if 0
-/*
- * Some EC firmware variations refuses to respond QR_EC when SCI_EVT is not
- * set, for which case, we complete the QR_EC without issuing it to the
- * firmware.
- * https://bugzilla.kernel.org/show_bug.cgi?id=82611
- * https://bugzilla.kernel.org/show_bug.cgi?id=97381
- */
-static int ec_flag_query_handshake(const struct dmi_system_id *id)
-{
- pr_debug("Detected the EC firmware requiring QR_EC issued when SCI_EVT set\n");
- EC_FLAGS_QUERY_HANDSHAKE = 1;
- return 0;
-}
-#endif
-
/*
* On some hardware it is necessary to clear events accumulated by the EC during
* sleep. These ECs stop reporting GPEs until they are manually polled, if too