From: Vinod Koul <vkoul@kernel.org>
To: dmaengine@vger.kernel.org, Rosen Penev <rosenp@gmail.com>
Cc: Frank Li <Frank.Li@kernel.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dmaengine: txx9dmac: use devm_platform_ioremap_resource()
Date: Thu, 03 Sep 2026 22:34:21 +0530 [thread overview]
Message-ID: <178845506105.1711546.13774000651357007669.b4-ty@kernel.org> (raw)
In-Reply-To: <20260714234742.908956-1-rosenp@gmail.com>
On Tue, 14 Jul 2026 16:47:42 -0700, Rosen Penev wrote:
> Replace the open-coded platform_get_resource() plus devm_request_mem_region()
> and devm_ioremap() sequence with a single devm_platform_ioremap_resource()
> call, which folds the resource lookup, region reservation and mapping into
> one step and returns an ERR_PTR on failure, checked with IS_ERR() and
> propagated via PTR_ERR().
>
> This is behaviorally equivalent: the driver already reserved the region
> with devm_request_mem_region(), so the non-overlapping reg requirement of
> devm_platform_ioremap_resource() was already satisfied. The txx9dmac
> platform device (arch/mips/txx9/generic/setup.c) provides a single
> IORESOURCE_MEM window per DMAC instance, and the child txx9dmac-chan
> devices carry only IRQ resources, so no region conflict is introduced.
>
> [...]
Applied, thanks!
[1/1] dmaengine: txx9dmac: use devm_platform_ioremap_resource()
commit: e99f446c47318f4489eb3a675d53d4047951a6d0
Best regards,
--
~Vinod
prev parent reply other threads:[~2026-09-03 17:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-14 23:47 Rosen Penev
2026-08-19 19:55 ` Frank Li
2026-09-03 17:04 ` Vinod Koul [this message]
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