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-rw-r--r--drivers/i2c/busses/i2c-designware-baytrail.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-designware-baytrail.c b/drivers/i2c/busses/i2c-designware-baytrail.c
index 3effc9a1778c..7eddc3b38852 100644
--- a/drivers/i2c/busses/i2c-designware-baytrail.c
+++ b/drivers/i2c/busses/i2c-designware-baytrail.c
@@ -62,6 +62,8 @@ static void reset_semaphore(struct dw_i2c_dev *dev)
dev_err(dev->dev, "iosf failed to reset punit semaphore during write\n");
pm_qos_update_request(&dev->pm_qos, PM_QOS_DEFAULT_VALUE);
+
+ iosf_mbi_punit_release();
}
static int baytrail_i2c_acquire(struct dw_i2c_dev *dev)
@@ -79,6 +81,8 @@ static int baytrail_i2c_acquire(struct dw_i2c_dev *dev)
if (!dev->release_lock)
return 0;
+ iosf_mbi_punit_acquire();
+
/*
* Disallow the CPU to enter C6 or C7 state, entering these states
* requires the punit to talk to the pmic and if this happens while