[PATCH 5.15 162/172] bus: mhi: pci_generic: Add mru_default for Cinterion MV31-W

[Greg Kroah-Hartman]

From: Slark Xiao <slark_xiao@xxxxxxx>

commit 05daa805a86c831ad9692f6f15e1b877c8f10638 upstream.

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.

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]
Fixes: 87693e092bd0 ("bus: mhi: pci_generic: Add Cinterion MV31-W PCIe to MHI")
Cc: stable@xxxxxxxxxxxxxxx # v5.14 +
Reviewed-by: Manivannan Sadhasivam <mani@xxxxxxxxxx>
Signed-off-by: Slark Xiao <slark_xiao@xxxxxxx>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220205135731.157871-3-manivannan.sadhasivam@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/bus/mhi/pci_generic.c |    1 +
 1 file changed, 1 insertion(+)

--- 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
 	.config = &modem_mv31_config,
 	.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
 	.dma_data_width = 32,
+	.mru_default = 32768,
 };
 
 static const struct pci_device_id mhi_pci_id_table[] = {