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bus: mhi: core: Cache intmod from mhi event to mhi channel

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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 <hemantk@codeaurora.org>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200521170249.21795-3-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hemant Kumar 2020-05-21 22:32:37 +05:30 committed by Greg Kroah-Hartman
parent cd11631880
commit 44d4e063d1
1 changed files with 4 additions and 0 deletions
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4
drivers/bus/mhi/core/init.c
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@ -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) {