linux-kernel - Re: [PATCH] PCI: j721e: Set .map_irq and .swizzle

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Message-ID: <20240725042001.GC2317@thinkpad>
Date: Thu, 25 Jul 2024 09:50:01 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Siddharth Vadapalli <s-vadapalli@...com>
Cc: bhelgaas@...gle.com, lpieralisi@...nel.org, kw@...ux.com,
	robh@...nel.org, vigneshr@...com, kishon@...nel.org,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, stable@...r.kernel.org,
	ahalaney@...hat.com, srk@...com
Subject: Re: [PATCH] PCI: j721e: Set .map_irq and .swizzle_irq to NULL

On Wed, Jul 24, 2024 at 09:49:21PM +0530, Manivannan Sadhasivam wrote:
> On Wed, Jul 24, 2024 at 12:20:48PM +0530, Siddharth Vadapalli wrote:
> > Since the configuration of Legacy Interrupts (INTx) is not supported, set
> > the .map_irq and .swizzle_irq callbacks to NULL. This fixes the error:
> >   of_irq_parse_pci: failed with rc=-22
> > due to the absence of Legacy Interrupts in the device-tree.
> > 
> 
> Do you really need to set 'swizzle_irq' to NULL? pci_assign_irq() will bail out
> if 'map_irq' is set to NULL.
> 

Hold on. The errono of of_irq_parse_pci() is not -ENOENT. So the INTx interrupts
are described in DT? Then why are they not supported?

- Mani

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