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kernel: mhi: backport upstream patch

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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>
This commit is contained in:
Koen Vandeputte 2022-09-13 13:44:17 +02:00
parent aa9be386d4
commit 731646e13a
1 changed files with 37 additions and 0 deletions
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37
target/linux/generic/backport-5.15/781-v6.1-bus-mhi-host-always-print-detected-modem-name.patch Normal file
View File

@ -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);