kernel: mhi: backport upstream patch

This patch will print the name of the modem in the bootlog
during probing.

This allows to verify that the exact model was loaded and not some
generic type.

The only other way to do this is by enabling dynamic debugging
which is disabled by default in OpenWRT

Signed-off-by: Koen Vandeputte <koen.vandeputte@citymesh.com>

diff --git a/target/linux/generic/backport-5.15/781-v6.1-bus-mhi-host-always-print-detected-modem-name.patch b/target/linux/generic/backport-5.15/781-v6.1-bus-mhi-host-always-print-detected-modem-name.patch
new file mode 100644 (file)
index 0000000..e974c21
--- /dev/null
+++ b/target/linux/generic/backport-5.15/781-v6.1-bus-mhi-host-always-print-detected-modem-name.patch
@@ -0,0 +1,37 @@
+From f369e9ad52ec9361827e21a631b7198c9fca438e Mon Sep 17 00:00:00 2001
+From: Koen Vandeputte <koen.vandeputte@citymesh.com>
+Date: Wed, 31 Aug 2022 12:03:49 +0200
+Subject: [PATCH] bus: mhi: host: always print detected modem name
+
+This harmless print provides a very easy way of knowing
+if the modem is detected properly during probing.
+
+Promote it to an informational print so no hassle is required
+enabling kernel debugging info to obtain it.
+
+The rationale here is that:
+On a lot of low-storage embedded devices, extensive kernel
+debugging info is not always present as this would
+increase it's size to much causing partition size issues.
+
+Signed-off-by: Koen Vandeputte <koen.vandeputte@citymesh.com>
+Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
+Link: https://lore.kernel.org/r/20220831100349.1488762-1-koen.vandeputte@citymesh.com
+[mani: added missing review tags]
+Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+---
+ drivers/bus/mhi/pci_generic.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/bus/mhi/pci_generic.c
++++ b/drivers/bus/mhi/pci_generic.c
+@@ -806,7 +806,7 @@ static int mhi_pci_probe(struct pci_dev
+       struct mhi_controller *mhi_cntrl;
+       int err;
+ 
+-      dev_dbg(&pdev->dev, "MHI PCI device found: %s\n", info->name);
++      dev_info(&pdev->dev, "MHI PCI device found: %s\n", info->name);
+ 
+       /* mhi_pdev.mhi_cntrl must be zero-initialized */
+       mhi_pdev = devm_kzalloc(&pdev->dev, sizeof(*mhi_pdev), GFP_KERNEL);