From: Chris Webb <chris@xxxxxxxxxxxx>
I have a router board with a Quectel RM520N-GL 5G module that speaks
either USB or PCIe. When switched to PCIe mode, the modem present itself
on PCI bus with following IDs:
0003:01:00.0 Unassigned class [ff00]: Qualcomm Technologies, Inc Device [17cb:0308]
Subsystem: Qualcomm Technologies, Inc Device [17cb:5201]
and is currently being wrongly detected by the kernel as:
mhi-pci-generic 0000:01:00.0: MHI PCI device found: qcom-sdx65m
which results into wrong modem configuration and thus missing wwanX
netdev. So lets fix it by adding a new device entry for this 0x5201 variant.
Link: https://lore.kernel.org/mhi/ZqllDCWfiKravZAo@xxxxxxxxxxxx/T/#u
Fixes: 1cad976a1be9 ("bus: mhi: host: pci_generic: Add support for Quectel RM520N-GL modem")
Signed-off-by: Chris Webb <chris@xxxxxxxxxxxx>
Signed-off-by: Petr Štetiar <ynezz@xxxxxxx>
---
drivers/bus/mhi/host/pci_generic.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
index 03aa88795209..0db9543a7edc 100644
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -818,6 +818,9 @@ static const struct pci_device_id mhi_pci_id_table[] = {
.driver_data = (kernel_ulong_t) &mhi_telit_fn980_hw_v1_info },
{ PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0306),
.driver_data = (kernel_ulong_t) &mhi_qcom_sdx55_info },
+ /* RM520N-GL variant with Qualcomm vendor and subvendor ID */
+ { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0308, PCI_VENDOR_ID_QCOM, 0x5201),
+ .driver_data = (kernel_ulong_t) &mhi_quectel_rm5xx_info },
/* Telit FN990 */
{ PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0308, 0x1c5d, 0x2010),
.driver_data = (kernel_ulong_t) &mhi_telit_fn990_info },
