From: Slark Xiao <slark_xiao@xxxxxxx>
For default mechanism, product would use default MRU 3500 if
they didn't define it. But for Cinterion MV31-W, there is a known
issue which MRU 3500 would lead to data connection lost.
So we align it with Qualcomm default MRU settings.
Cc: stable@xxxxxxxxxxxxxxx # v5.14 +
Fixes: 87693e092bd0 ("bus: mhi: pci_generic: Add Cinterion MV31-W PCIe to MHI")
Signed-off-by: Slark Xiao <slark_xiao@xxxxxxx>
Reviewed-by: Manivannan Sadhasivam <mani@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220119102519.5342-1-slark_xiao@xxxxxxx
[mani: Modified the commit message to reflect Cinterion MV31-W and CCed stable]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
drivers/bus/mhi/pci_generic.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
index 74e8fc342cfd..b79895810c52 100644
--- a/drivers/bus/mhi/pci_generic.c
+++ b/drivers/bus/mhi/pci_generic.c
@@ -402,6 +402,7 @@ static const struct mhi_pci_dev_info mhi_mv31_info = {
.config = &modem_mv31_config,
.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
.dma_data_width = 32,
+ .mru_default = 32768,
};
static const struct mhi_channel_config mhi_sierra_em919x_channels[] = {
--
2.25.1
