| Message ID | 1610139297-36435-3-git-send-email-bbhatt@codeaurora.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Updates to MHI channel handling | expand |
On Fri, Jan 08, 2021 at 12:54:50PM -0800, Bhaumik Bhatt wrote: > If a channel was explicitly stopped but not reset, allow it to > move to a disabled state so that the channel context can be > cleaned up after a driver remove is issued. Since the channel > remained in stopped state, its context on the device is not > cleared. Allow this move if a client driver module is unloaded > or a device crash occurs. > The commit message needs to be improved. The stopped channel will by default move to stopped state during mhi_driver_remove(). So this patch is not at all doing anything other than clearing the context for stopped channels. Please fix it! > Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org> > Reviewed-by: Hemant Kumar <hemantk@codeaurora.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Thanks, Mani > --- > drivers/bus/mhi/core/init.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c > index aa575d3..03c5786 100644 > --- a/drivers/bus/mhi/core/init.c > +++ b/drivers/bus/mhi/core/init.c > @@ -1293,7 +1293,8 @@ 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); > > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c index aa575d3..03c5786 100644 --- a/drivers/bus/mhi/core/init.c +++ b/drivers/bus/mhi/core/init.c @@ -1293,7 +1293,8 @@ 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);