On Fri, Jan 08, 2021 at 12:54:57PM -0800, Bhaumik Bhatt wrote: > 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. > Again, please explain where and when exactly you spotted this issue. Thanks, Mani > 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); > > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
