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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@163.com [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@vger.kernel.org # v5.14 + Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Slark Xiao <slark_xiao@163.com> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20220205135731.157871-3-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>