[PATCH v2] PCI: xilinx-xdma: Enable INTx interrupts

[Bandi, Ravi Kumar]

> On Oct 27, 2025, at 4:28 PM, Bjorn Helgaas <helgaas at kernel.org> wrote:
> 
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> 
> 
> 
> [+cc Stefan et al]
> 
> On Sun, Oct 19, 2025 at 12:39:25PM +0530, Manivannan Sadhasivam wrote:
>> On Sat, 20 Sep 2025 22:52:32 +0000, Ravi Kumar Bandi wrote:
>>> The pcie-xilinx-dma-pl driver does not enable INTx interrupts
>>> after initializing the port, preventing INTx interrupts from
>>> PCIe endpoints from flowing through the Xilinx XDMA root port
>>> bridge. This issue affects kernel 6.6.0 and later versions.
>>> 
>>> This patch allows INTx interrupts generated by PCIe endpoints
>>> to flow through the root port. Tested the fix on a board with
>>> two endpoints generating INTx interrupts. Interrupts are
>>> properly detected and serviced. The /proc/interrupts output
>>> shows:
>>> 
>>> [...]
>> 
>> Applied, thanks!
>> 
>> [1/1] PCI: xilinx-xdma: Enable INTx interrupts
>>      commit: c098c13f4365e6750009be4d90dba36fa4a19b4e
> 
> Pretty sure we have confirmation that we don't need either this patch
> or Stefan's patch, so I removed the pci/controller/xilinx-dma branch.
> 
> It was at 2002478e5034 ("PCI: xilinx-xdma: Enable INTx interrupts") in
> case we need to resurrect it.
> 
> IIUC, Stefan confirmed that he didn't need this patch (Ravi's) [1],
> and that after Vivado is fixed to generate the correct interrupt-map,
> his patch (Stefan's) won't be needed either [2].
> 
> [1] https://lore.kernel.org/r/29bc5e92-04c9-475a-ba3d-a5ea26f1c95a@mailbox.org
> [2] https://lore.kernel.org/r/9c7e43c3-24e9-4b08-a6ce-2035b50226f4@mailbox.org

Hello Bjorn, and Mani et al.,

Thank you for taking the time to review the patch and explain the reasoning.

Sincerly,
Ravi