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| author | Lv Zheng <lv.zheng@intel.com> | 2015-06-11 13:21:23 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-06-15 14:35:58 +0200 |
| commit | f8b8eb71533338654f39211a87efeca35055566b (patch) | |
| tree | aea22cd59255de99ac61e977649681e556e4fb17 /drivers/acpi/ec.c | |
| parent | 3174abcfea6a05aa25038156d6722b6c8876fb36 (diff) | |
| download | linux-stable-f8b8eb71533338654f39211a87efeca35055566b.tar.gz linux-stable-f8b8eb71533338654f39211a87efeca35055566b.tar.bz2 linux-stable-f8b8eb71533338654f39211a87efeca35055566b.zip | |
ACPI / EC: Cleanup transaction state transition.
This patch collects transaction state transition code into one function. We
then could have a single function to maintain transaction transition
related behaviors. No functional changes.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Tested-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Tested-by: Tigran Gabrielyan <tigrangab@gmail.com>
Tested-by: Adrien D <ghbdtn@openmailbox.org>
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 | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 149b5e7ee5c7..0ce8b6e8c3e8 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -391,7 +391,7 @@ static void acpi_ec_submit_query(struct acpi_ec *ec) static void acpi_ec_complete_query(struct acpi_ec *ec) { - if (ec->curr->command == ACPI_EC_COMMAND_QUERY) { + if (test_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) { clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags); ec_dbg_req("Event stopped"); } @@ -421,6 +421,15 @@ static int ec_transaction_completed(struct acpi_ec *ec) return ret; } +static inline void ec_transaction_transition(struct acpi_ec *ec, unsigned long flag) +{ + ec->curr->flags |= flag; + if (ec->curr->command == ACPI_EC_COMMAND_QUERY) { + if (flag == ACPI_EC_COMMAND_POLL) + acpi_ec_complete_query(ec); + } +} + static void advance_transaction(struct acpi_ec *ec) { struct transaction *t; @@ -449,7 +458,7 @@ static void advance_transaction(struct acpi_ec *ec) if ((status & ACPI_EC_FLAG_OBF) == 1) { t->rdata[t->ri++] = acpi_ec_read_data(ec); if (t->rlen == t->ri) { - t->flags |= ACPI_EC_COMMAND_COMPLETE; + ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE); if (t->command == ACPI_EC_COMMAND_QUERY) ec_dbg_req("Command(%s) hardware completion", acpi_ec_cmd_string(t->command)); @@ -459,7 +468,7 @@ static void advance_transaction(struct acpi_ec *ec) goto err; } else if (t->wlen == t->wi && (status & ACPI_EC_FLAG_IBF) == 0) { - t->flags |= ACPI_EC_COMMAND_COMPLETE; + ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE); wakeup = true; } goto out; @@ -467,17 +476,15 @@ static void advance_transaction(struct acpi_ec *ec) if (EC_FLAGS_QUERY_HANDSHAKE && !(status & ACPI_EC_FLAG_SCI) && (t->command == ACPI_EC_COMMAND_QUERY)) { - t->flags |= ACPI_EC_COMMAND_POLL; - acpi_ec_complete_query(ec); + ec_transaction_transition(ec, ACPI_EC_COMMAND_POLL); t->rdata[t->ri++] = 0x00; - t->flags |= ACPI_EC_COMMAND_COMPLETE; + ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE); ec_dbg_req("Command(%s) software completion", acpi_ec_cmd_string(t->command)); wakeup = true; } else if ((status & ACPI_EC_FLAG_IBF) == 0) { acpi_ec_write_cmd(ec, t->command); - t->flags |= ACPI_EC_COMMAND_POLL; - acpi_ec_complete_query(ec); + ec_transaction_transition(ec, ACPI_EC_COMMAND_POLL); } else goto err; goto out; |