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path: root/drivers/bus/mhi/host/main.c
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Diffstat (limited to 'drivers/bus/mhi/host/main.c')
-rw-r--r--drivers/bus/mhi/host/main.c25
1 files changed, 7 insertions, 18 deletions
diff --git a/drivers/bus/mhi/host/main.c b/drivers/bus/mhi/host/main.c
index df0fbfee7b78..74a75439c713 100644
--- a/drivers/bus/mhi/host/main.c
+++ b/drivers/bus/mhi/host/main.c
@@ -503,7 +503,7 @@ irqreturn_t mhi_intvec_threaded_handler(int irq_number, void *priv)
}
write_unlock_irq(&mhi_cntrl->pm_lock);
- if (pm_state != MHI_PM_SYS_ERR_DETECT || ee == mhi_cntrl->ee)
+ if (pm_state != MHI_PM_SYS_ERR_DETECT)
goto exit_intvec;
switch (ee) {
@@ -961,7 +961,9 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller *mhi_cntrl,
}
read_lock_bh(&mhi_cntrl->pm_lock);
- if (likely(MHI_DB_ACCESS_VALID(mhi_cntrl)))
+
+ /* Ring EV DB only if there is any pending element to process */
+ if (likely(MHI_DB_ACCESS_VALID(mhi_cntrl)) && count)
mhi_ring_er_db(mhi_event);
read_unlock_bh(&mhi_cntrl->pm_lock);
@@ -1031,7 +1033,9 @@ int mhi_process_data_event_ring(struct mhi_controller *mhi_cntrl,
count++;
}
read_lock_bh(&mhi_cntrl->pm_lock);
- if (likely(MHI_DB_ACCESS_VALID(mhi_cntrl)))
+
+ /* Ring EV DB only if there is any pending element to process */
+ if (likely(MHI_DB_ACCESS_VALID(mhi_cntrl)) && count)
mhi_ring_er_db(mhi_event);
read_unlock_bh(&mhi_cntrl->pm_lock);
@@ -1679,18 +1683,3 @@ void mhi_unprepare_from_transfer(struct mhi_device *mhi_dev)
}
}
EXPORT_SYMBOL_GPL(mhi_unprepare_from_transfer);
-
-int mhi_poll(struct mhi_device *mhi_dev, u32 budget)
-{
- struct mhi_controller *mhi_cntrl = mhi_dev->mhi_cntrl;
- struct mhi_chan *mhi_chan = mhi_dev->dl_chan;
- struct mhi_event *mhi_event = &mhi_cntrl->mhi_event[mhi_chan->er_index];
- int ret;
-
- spin_lock_bh(&mhi_event->lock);
- ret = mhi_event->process_event(mhi_cntrl, mhi_event, budget);
- spin_unlock_bh(&mhi_event->lock);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(mhi_poll);