[PATCH v5 9/9] bus: mhi: core: Do not clear channel context more than once

[Bhaumik Bhatt]

When clearing the channel context, calling mhi_free_coherent()
more than once can result in kernel warnings such as "trying to
free invalid coherent area". Prevent extra work by adding a check
to skip calling mhi_deinit_chan_ctxt() if the client driver has
already disabled the channels.

Signed-off-by: Bhaumik Bhatt <bbhatt@xxxxxxxxxxxxxx>
---
 drivers/bus/mhi/core/init.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
index 30eef19..272f350 100644
--- a/drivers/bus/mhi/core/init.c
+++ b/drivers/bus/mhi/core/init.c
@@ -1314,6 +1314,7 @@ static int mhi_driver_remove(struct device *dev)
 
 		if ((ch_state[dir] == MHI_CH_STATE_ENABLED ||
 		     ch_state[dir] == MHI_CH_STATE_STOP) &&
+		    mhi_chan->ch_state != MHI_CH_STATE_DISABLED &&
 		    !mhi_chan->offload_ch)
 			mhi_deinit_chan_ctxt(mhi_cntrl, mhi_chan);
 
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