[SRU][Jammy:linux-intel-iotg][PATCH v2 1/1] bus: mhi: pci_generic: Add mru_default for Quectel EM1xx series

[Jian Hui Lee]

From: Yonglin Tan <yonglin.tan at outlook.com>

BugLink: https://bugs.launchpad.net/bugs/1967257

For default mechanism, the driver uses default MRU 3500 if mru_default
is not initialized. The Qualcomm configured the MRU size to 32768 in the
WWAN device FW. So, we align the driver setting with Qualcomm FW setting.

Link: https://lore.kernel.org/r/MEYP282MB2374EE345DADDB591AFDA6AFFD2E9@MEYP282MB2374.AUSP282.PROD.OUTLOOK.COM
Fixes: ac4bf60bbaa0 ("bus: mhi: pci_generic: Introduce quectel EM1XXGR-L support")
Cc: stable at vger.kernel.org
Reviewed-by: Manivannan Sadhasivam <mani at kernel.org>
Signed-off-by: Yonglin Tan <yonglin.tan at outlook.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam at linaro.org>
Link: https://lore.kernel.org/r/20220301160308.107452-2-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
(cherry picked from commit 2413ffbf19a95cfcd7adf63135c5a9343a66d0a2)
Signed-off-by: Jian Hui Lee <jianhui.lee at canonical.com>
---
 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 d340d6864e13..d243526b23d8 100644
--- a/drivers/bus/mhi/pci_generic.c
+++ b/drivers/bus/mhi/pci_generic.c
@@ -327,6 +327,7 @@ static const struct mhi_pci_dev_info mhi_quectel_em1xx_info = {
 	.config = &modem_quectel_em1xx_config,
 	.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
 	.dma_data_width = 32,
+	.mru_default = 32768,
 	.sideband_wake = true,
 };
 
-- 
2.34.1