linux-kernel - RE: [PATCH] PCI: amd-mdb: fix incorrect IRQ number in INTx error message

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Message-ID:
 <IA4PR12MB9810C452A53425A528D83E37CD90A@IA4PR12MB9810.namprd12.prod.outlook.com>
Date: Tue, 27 Jan 2026 09:04:24 +0000
From: "Musham, Sai Krishna" <sai.krishna.musham@....com>
To: Rakuram Eswaran <rakuram.e96@...il.com>, "lpieralisi@...nel.org"
	<lpieralisi@...nel.org>, "kwilczynski@...nel.org" <kwilczynski@...nel.org>,
	"mani@...nel.org" <mani@...nel.org>, "robh@...nel.org" <robh@...nel.org>,
	"bhelgaas@...gle.com" <bhelgaas@...gle.com>
CC: "lkp@...el.com" <lkp@...el.com>, "error27@...il.com" <error27@...il.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>, "jirislaby@...nel.org"
	<jirislaby@...nel.org>, "Havalige, Thippeswamy"
	<thippeswamy.havalige@....com>, "linux-pci@...r.kernel.org"
	<linux-pci@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, Dan Carpenter <dan.carpenter@...aro.org>
Subject: RE: [PATCH] PCI: amd-mdb: fix incorrect IRQ number in INTx error
 message

[AMD Official Use Only - AMD Internal Distribution Only]

> -----Original Message-----
> From: Rakuram Eswaran <rakuram.e96@...il.com>
> Sent: Wednesday, December 24, 2025 12:10 AM
> To: lpieralisi@...nel.org; kwilczynski@...nel.org; mani@...nel.org;
> robh@...nel.org; bhelgaas@...gle.com
> Cc: lkp@...el.com; error27@...il.com; Musham, Sai Krishna
> <sai.krishna.musham@....com>; tglx@...utronix.de; jirislaby@...nel.org;
> Havalige, Thippeswamy <thippeswamy.havalige@....com>; linux-
> pci@...r.kernel.org; linux-kernel@...r.kernel.org; Rakuram Eswaran
> <rakuram.e96@...il.com>; Dan Carpenter <dan.carpenter@...aro.org>
> Subject: [PATCH] PCI: amd-mdb: fix incorrect IRQ number in INTx error message
>
> Caution: This message originated from an External Source. Use proper caution
> when opening attachments, clicking links, or responding.
>
>
> The INTx devm_request_irq() failure path logs an incorrect IRQ
> number. The printed 'irq' variable refers to a previous MDB
> interrupt mapping and does not correspond to the INTx IRQ being
> requested.
>
> Fix the error message to report pcie->intx_irq, which is the IRQ
> associated with the failing request.
>
> Reported-by: kernel test robot <lkp@...el.com>
> Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
> Closes: https://lore.kernel.org/r/202512230112.AaiGqMWM-lkp@intel.com/
> Signed-off-by: Rakuram Eswaran <rakuram.e96@...il.com>
> ---
> Testing note:
> Compile-tested only.
>
> Static analysis was performed with Smatch to ensure the reported warning
> no longer reproduces after applying this fix.
>
> Command using for testing:
> ~/project/smatch/smatch_scripts/kchecker ./drivers/pci/controller/dwc/pcie-amd-
> mdb.c
>
>  drivers/pci/controller/dwc/pcie-amd-mdb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
Reviewed-by: Sai Krishna Musham <sai.krishna.musham@....com>