On Thu, Nov 26, 2020 at 04:29:00PM +0100, Loic Poulain wrote:
> If the IPA (IP hardware accelerator) is starved of event ring elements,
> the modem is crashing (SDX55). That can be prevented by setting a
> larger number of events (i.e 2 x number of channel ring elements).
>
> Tested with FN980m module.
>
> Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Thanks,
Mani
> ---
> drivers/bus/mhi/pci_generic.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
> index f5bee76..d3896ef 100644
> --- a/drivers/bus/mhi/pci_generic.c
> +++ b/drivers/bus/mhi/pci_generic.c
> @@ -91,7 +91,7 @@ struct mhi_pci_dev_info {
>
> #define MHI_EVENT_CONFIG_HW_DATA(ev_ring, ch_num) \
> { \
> - .num_elements = 128, \
> + .num_elements = 256, \
> .irq_moderation_ms = 5, \
> .irq = (ev_ring) + 1, \
> .priority = 1, \
> --
> 2.7.4
>
