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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-11-23 19:38:21 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-12-01 20:17:32 +0100 |
| commit | 1f2350443dd21028d3de6907f98ff1be75a2c9bc (patch) | |
| tree | a4bd2aaf821c30b975b6c96b7fe30c87b2cd92c3 /drivers/acpi/ec.c | |
| parent | ca8283dcd933a2ca776fade77fb4527321521463 (diff) | |
| download | linux-1f2350443dd21028d3de6907f98ff1be75a2c9bc.tar.gz | |
ACPI: EC: Pass one argument to acpi_ec_query()
Notice that the second argument to acpi_ec_query() is redundant,
because in the only case when it is not NULL, the value passed
through it is only checked against 0 and it can only be 0 when
acpi_ec_query() returns an error code, but its return value
is checked along with the value passed through its second
argument.
Accordingly, modify acpi_ec_query() to take only one argument
and while at it, change its handling of the case when
acpi_ec_transaction() returns an error so as to return that
error value to the caller right away.
No expected functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/ec.c')
| -rw-r--r-- | drivers/acpi/ec.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index bfc29cdfa5f0..4b2573d85ac6 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -169,7 +169,7 @@ struct acpi_ec_query { struct acpi_ec *ec; }; -static int acpi_ec_query(struct acpi_ec *ec, u8 *data); +static int acpi_ec_query(struct acpi_ec *ec); static bool advance_transaction(struct acpi_ec *ec, bool interrupt); static void acpi_ec_event_handler(struct work_struct *work); static void acpi_ec_event_processor(struct work_struct *work); @@ -496,12 +496,10 @@ static inline void __acpi_ec_disable_event(struct acpi_ec *ec) */ static void acpi_ec_clear(struct acpi_ec *ec) { - int i, status; - u8 value = 0; + int i; for (i = 0; i < ACPI_EC_CLEAR_MAX; i++) { - status = acpi_ec_query(ec, &value); - if (status || !value) + if (acpi_ec_query(ec)) break; } if (unlikely(i == ACPI_EC_CLEAR_MAX)) @@ -1164,11 +1162,11 @@ static void acpi_ec_event_processor(struct work_struct *work) acpi_ec_delete_query(q); } -static int acpi_ec_query(struct acpi_ec *ec, u8 *data) +static int acpi_ec_query(struct acpi_ec *ec) { + struct acpi_ec_query *q; u8 value = 0; int result; - struct acpi_ec_query *q; q = acpi_ec_create_query(ec, &value); if (!q) @@ -1180,11 +1178,14 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 *data) * bit to be cleared (and thus clearing the interrupt source). */ result = acpi_ec_transaction(ec, &q->transaction); - if (!value) - result = -ENODATA; if (result) goto err_exit; + if (!value) { + result = -ENODATA; + goto err_exit; + } + q->handler = acpi_ec_get_query_handler_by_value(ec, value); if (!q->handler) { result = -ENODATA; @@ -1210,8 +1211,7 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 *data) err_exit: if (result) acpi_ec_delete_query(q); - if (data) - *data = value; + return result; } @@ -1243,7 +1243,9 @@ static void acpi_ec_event_handler(struct work_struct *work) spin_lock_irqsave(&ec->lock, flags); while (ec->nr_pending_queries) { spin_unlock_irqrestore(&ec->lock, flags); - (void)acpi_ec_query(ec, NULL); + + acpi_ec_query(ec); + spin_lock_irqsave(&ec->lock, flags); ec->nr_pending_queries--; /* |