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ACPI / EC: Clean up EC GPE mask flag 

EC_FLAGS_COMMAND_STORM is actually used to mask GPE during IRQ processing.
This patch cleans it up using more readable flag/function names.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Tested-by: Tomislav Ivek <tomislav.ivek@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lv Zheng 2017-08-11 14:36:28 +08:00 коммит произвёл Rafael J. Wysocki
Родитель 69b957c26b
Коммит 56f77eeb6b
1 изменённых файлов: 11 добавлений и 12 удалений
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23
drivers/acpi/ec.c
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@ -112,8 +112,7 @@ enum {
EC_FLAGS_EVT_HANDLER_INSTALLED, /* _Qxx handlers installed */
EC_FLAGS_STARTED, /* Driver is started */
EC_FLAGS_STOPPED, /* Driver is stopped */
EC_FLAGS_COMMAND_STORM, /* GPE storms occurred to the
* current command processing */
EC_FLAGS_GPE_MASKED, /* GPE masked */
};
#define ACPI_EC_COMMAND_POLL 0x01 /* Available for command byte */
@ -425,19 +424,19 @@ static void acpi_ec_complete_request(struct acpi_ec *ec)
wake_up(&ec->wait);
}
static void acpi_ec_set_storm(struct acpi_ec *ec, u8 flag)
static void acpi_ec_mask_gpe(struct acpi_ec *ec)
{
if (!test_bit(flag, &ec->flags)) {
if (!test_bit(EC_FLAGS_GPE_MASKED, &ec->flags)) {
acpi_ec_disable_gpe(ec, false);
ec_dbg_drv("Polling enabled");
set_bit(flag, &ec->flags);
set_bit(EC_FLAGS_GPE_MASKED, &ec->flags);
}
}
static void acpi_ec_clear_storm(struct acpi_ec *ec, u8 flag)
static void acpi_ec_unmask_gpe(struct acpi_ec *ec)
{
if (test_bit(flag, &ec->flags)) {
clear_bit(flag, &ec->flags);
if (test_bit(EC_FLAGS_GPE_MASKED, &ec->flags)) {
clear_bit(EC_FLAGS_GPE_MASKED, &ec->flags);
acpi_ec_enable_gpe(ec, false);
ec_dbg_drv("Polling disabled");
}
@ -464,7 +463,7 @@ static bool acpi_ec_submit_flushable_request(struct acpi_ec *ec)
static void acpi_ec_submit_query(struct acpi_ec *ec)
{
acpi_ec_set_storm(ec, EC_FLAGS_COMMAND_STORM);
acpi_ec_mask_gpe(ec);
if (!acpi_ec_event_enabled(ec))
return;
if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) {
@ -480,7 +479,7 @@ static void acpi_ec_complete_query(struct acpi_ec *ec)
if (test_and_clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags))
ec_dbg_evt("Command(%s) unblocked",
acpi_ec_cmd_string(ACPI_EC_COMMAND_QUERY));
acpi_ec_clear_storm(ec, EC_FLAGS_COMMAND_STORM);
acpi_ec_unmask_gpe(ec);
}
static inline void __acpi_ec_enable_event(struct acpi_ec *ec)
@ -700,7 +699,7 @@ err:
++t->irq_count;
/* Allow triggering on 0 threshold */
if (t->irq_count == ec_storm_threshold)
acpi_ec_set_storm(ec, EC_FLAGS_COMMAND_STORM);
acpi_ec_mask_gpe(ec);
}
}
out:
@ -798,7 +797,7 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
spin_lock_irqsave(&ec->lock, tmp);
if (t->irq_count == ec_storm_threshold)
acpi_ec_clear_storm(ec, EC_FLAGS_COMMAND_STORM);
acpi_ec_unmask_gpe(ec);
ec_dbg_req("Command(%s) stopped", acpi_ec_cmd_string(t->command));
ec->curr = NULL;
/* Disable GPE for command processing (IBF=0/OBF=1) */