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authorTomas Winkler <tomas.winkler@intel.com>2017-12-12 13:27:06 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-12-13 14:10:47 +0100
commit8d52af6795c0480a20272159103976a893603fde (patch)
tree90d5c6b664176a0b7e382ddf015009be2dc23551 /drivers/misc/mei/hw-txe.c
parent2fc10246766fce0b560f015e1c0b6ff29fb4ced0 (diff)
mei: speed up the power down flow
When mei driver is powering down due to suspend or shutdown it will iterate over the mei client bus and disconnect each client device attached in turn. The power down flow consist of the link rest, which causes all clients get disconnected at once, hence the individual disconnection can be omitted and significantly reduce power down flow. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/hw-txe.c')
-rw-r--r--drivers/misc/mei/hw-txe.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c
index 24e4a4c96606..84197277f26c 100644
--- a/drivers/misc/mei/hw-txe.c
+++ b/drivers/misc/mei/hw-txe.c
@@ -1127,7 +1127,9 @@ irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id)
if (test_and_clear_bit(TXE_INTR_OUT_DB_BIT, &hw->intr_cause)) {
/* Read from TXE */
rets = mei_irq_read_handler(dev, &cmpl_list, &slots);
- if (rets && dev->dev_state != MEI_DEV_RESETTING) {
+ if (rets &&
+ (dev->dev_state != MEI_DEV_RESETTING ||
+ dev->dev_state != MEI_DEV_POWER_DOWN)) {
dev_err(dev->dev,
"mei_irq_read_handler ret = %d.\n", rets);