From: Hemant Kumar Date: Thu, 21 May 2020 17:02:37 +0000 (+0530) Subject: bus: mhi: core: Cache intmod from mhi event to mhi channel X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=44d4e063d18b87c0fef1b19f7883f10e71c544b6;p=linux.git bus: mhi: core: Cache intmod from mhi event to mhi channel Driver is using zero initialized intmod value from mhi channel when configuring TRE for bei field. This prevents interrupt moderation to take effect in case it is supported by an event ring. Fix this by copying intmod value from associated event ring to mhi channel upon registering mhi controller. Signed-off-by: Hemant Kumar Signed-off-by: Bhaumik Bhatt Reviewed-by: Jeffrey Hugo Reviewed-by: Manivannan Sadhasivam Signed-off-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20200521170249.21795-3-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c index eb2ab058a01d2..1a93d24efffc9 100644 --- a/drivers/bus/mhi/core/init.c +++ b/drivers/bus/mhi/core/init.c @@ -863,6 +863,10 @@ int mhi_register_controller(struct mhi_controller *mhi_cntrl, mutex_init(&mhi_chan->mutex); init_completion(&mhi_chan->completion); rwlock_init(&mhi_chan->lock); + + /* used in setting bei field of TRE */ + mhi_event = &mhi_cntrl->mhi_event[mhi_chan->er_index]; + mhi_chan->intmod = mhi_event->intmod; } if (mhi_cntrl->bounce_buf) {