From: sashiko-bot@kernel.org
To: "Xincheng Ji" <jixincheng@ultrarisc.com>
Cc: linux-pci@vger.kernel.org
Subject: Re: [PATCH 1/2] PCI: dwc: Skip MEM outbound iATU setup for identity mappings
Date: Mon, 19 Oct 2026 06:54:56 +0000 [thread overview]
Message-ID: <sashiko-outbox-176712@kernel.org> (raw)
In-Reply-To: <20261019-dw-pci-fix-v1-1-9b7860f919b9@ultrarisc.com>
> No outbound iATU translation is required when the parent-bus address
> matches the PCI address. This is a DesignWare controller property, not
> an UltraRISC-specific behavior.
>
> Compare the addresses directly and skip MEM outbound iATU setup when
> they match. Remove bypass_ob_mem_iatu and the UltraRISC-specific setting.
> CFG and I/O accesses, as well as non-identity-mapped MEM ranges, still
> use outbound iATU windows.
>
> Fixes: 17b478b29cf1 ("PCI: dwc: Allow drivers to skip MEM outbound iATU setup")
> Signed-off-by: Xincheng Ji <jixincheng@ultrarisc.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261019-dw-pci-fix-v1-0-9b7860f919b9@ultrarisc.com?part=1
next prev parent reply other threads:[~2026-10-19 6:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-19 6:47 [PATCH 0/2] PCI: dwc: Fix MEM outbound iATU setup Xincheng Ji
2026-10-19 6:47 ` [PATCH 1/2] PCI: dwc: Skip MEM outbound iATU setup for identity mappings Xincheng Ji
2026-10-19 6:54 ` sashiko-bot [this message]
2026-10-19 6:47 ` [PATCH 2/2] PCI: ultrarisc: Remove bypass_ob_mem_iatu variable on DP1000 Xincheng Ji
2026-10-19 6:53 ` sashiko-bot
2026-10-19 8:32 ` Xincheng Ji
2026-10-19 12:12 ` Niklas Cassel
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