@@ -615,6 +615,16 @@ static inline void ec_transaction_transition(struct acpi_ec *ec, unsigned long f
}
}
+static void acpi_ec_spurious_interrupt(struct acpi_ec *ec, struct transaction *t)
+{
+ if (t->irq_count < ec_storm_threshold)
+ ++t->irq_count;
+
+ /* Trigger if the threshold is 0 too. */
+ if (t->irq_count == ec_storm_threshold)
+ acpi_ec_mask_events(ec);
+}
+
static void advance_transaction(struct acpi_ec *ec, bool interrupt)
{
struct transaction *t = ec->curr;
@@ -659,8 +669,8 @@ static void advance_transaction(struct acpi_ec *ec, bool interrupt)
if (t->wlen > t->wi) {
if ((status & ACPI_EC_FLAG_IBF) == 0)
acpi_ec_write_data(ec, t->wdata[t->wi++]);
- else
- goto err;
+ else if (interrupt && !(status & ACPI_EC_FLAG_SCI))
+ acpi_ec_spurious_interrupt(ec, t);
} else if (t->rlen > t->ri) {
if ((status & ACPI_EC_FLAG_OBF) == 1) {
t->rdata[t->ri++] = acpi_ec_read_data(ec);
@@ -671,32 +681,19 @@ static void advance_transaction(struct acpi_ec *ec, bool interrupt)
acpi_ec_cmd_string(ACPI_EC_COMMAND_QUERY));
wakeup = true;
}
- } else
- goto err;
+ } else if (interrupt && !(status & ACPI_EC_FLAG_SCI)) {
+ acpi_ec_spurious_interrupt(ec, t);
+ }
} else if (t->wlen == t->wi &&
(status & ACPI_EC_FLAG_IBF) == 0) {
ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE);
wakeup = true;
}
- goto out;
} 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:
- /*
- * If SCI bit is set, then don't think it's a false IRQ
- * otherwise will take a not handled IRQ as a false one.
- */
- if (!(status & ACPI_EC_FLAG_SCI) && interrupt) {
- if (t->irq_count < ec_storm_threshold)
- ++t->irq_count;
- /* Allow triggering on 0 threshold */
- if (t->irq_count == ec_storm_threshold)
- acpi_ec_mask_events(ec);
- }
out:
if (status & ACPI_EC_FLAG_SCI)
acpi_ec_submit_query(ec);