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bus: mhi: core: Clear context for stopped channels from remove()

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[ Upstream commit 4e44ae3d6d ]

If a channel was explicitly stopped but not reset and a driver
remove is issued, clean up the channel context such that it is
reflected on the device. This move is useful if a client driver
module is unloaded or a device crash occurs with the host having
placed the channel in a stopped state.

Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1617311778-1254-3-git-send-email-bbhatt@codeaurora.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bhaumik Bhatt
2021-04-01 14:16:11 -07:00
committed by Greg Kroah-Hartman
parent 3737cf191a
commit 2ed4d58753
1 changed files with 2 additions and 1 deletions
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3
drivers/bus/mhi/core/init.c
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@@ -1280,7 +1280,8 @@ static int mhi_driver_remove(struct device *dev)
mutex_lock(&mhi_chan->mutex);
if (ch_state[dir] == MHI_CH_STATE_ENABLED &&
if ((ch_state[dir] == MHI_CH_STATE_ENABLED ||
ch_state[dir] == MHI_CH_STATE_STOP) &&
!mhi_chan->offload_ch)
mhi_deinit_chan_ctxt(mhi_cntrl, mhi_chan);