On Mon, May 11, 2020 at 07:03:08PM -0700, Hemant Kumar wrote:
> Devices that support RDDM do not require processing SYS_ERROR as it is
> deemed redundant. Avoid SYS_ERROR processing if RDDM is supported by
> the device.
>
> Signed-off-by: Hemant Kumar <hemantk@xxxxxxxxxxxxxx>
> Reviewed-by: Jeffrey Hugo <jhugo@xxxxxxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Thanks,
Mani
> ---
> drivers/bus/mhi/core/main.c | 11 ++++++++---
> 1 file changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
> index 467c0ba..1f622ce 100644
> --- a/drivers/bus/mhi/core/main.c
> +++ b/drivers/bus/mhi/core/main.c
> @@ -397,9 +397,9 @@ irqreturn_t mhi_intvec_threaded_handler(int irq_number, void *priv)
> }
> write_unlock_irq(&mhi_cntrl->pm_lock);
>
> - /* If device in RDDM don't bother processing SYS error */
> - if (mhi_cntrl->ee == MHI_EE_RDDM) {
> - if (mhi_cntrl->ee != ee) {
> + /* If device supports RDDM don't bother processing SYS error */
> + if (mhi_cntrl->rddm_image) {
> + if (mhi_cntrl->ee == MHI_EE_RDDM && mhi_cntrl->ee != ee) {
> mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_EE_RDDM);
> wake_up_all(&mhi_cntrl->state_event);
> }
> @@ -735,6 +735,11 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller *mhi_cntrl,
> {
> enum mhi_pm_state new_state;
>
> + /* skip SYS_ERROR handling if RDDM supported */
> + if (mhi_cntrl->ee == MHI_EE_RDDM ||
> + mhi_cntrl->rddm_image)
> + break;
> +
> dev_dbg(dev, "System error detected\n");
> write_lock_irq(&mhi_cntrl->pm_lock);
> new_state = mhi_tryset_pm_state(mhi_cntrl,
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
