From: Vinod Koul <vkoul@kernel.org>
To: Shi-Shenghui <ssh.mediatek@gmail.com>
Cc: Frank.Li@nxp.com, manivannan.sadhasivam@linaro.org,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
brody.shi@m2semi.com, kevin.song@m2semi.com,
qixiang.zhong@m2semi.com, tom.hu@m2semi.com,
richard.yang@m2semi.com
Subject: Re: [PATCH v7] dmaengine: dw-edma: fix MSI data programming for multi-IRQ case
Date: Wed, 25 Feb 2026 16:32:40 +0530 [thread overview]
Message-ID: <aZ7W0KxKifSyOAG3@vaman> (raw)
In-Reply-To: <20260209103726.414-1-brody.shi@m2semi.com>
On 09-02-26, 18:37, Shi-Shenghui wrote:
> From: Shenghui Shi <brody.shi@m2semi.com>
>
> When using MSI (not MSI-X) with multiple IRQs, the MSI data value
> must be unique per vector to ensure correct interrupt delivery.
> Currently, the driver fails to increment the MSI data per vector,
> causing interrupts to be misrouted.
>
> Fix this by caching the base MSI data and adjusting each vector's
> data accordingly during IRQ setup.
>
> Fixes: e63d79d1ff04 ("dmaengine: dw-edma: Add Synopsys DesignWare eDMA IP core driver")
>
> Signed-off-by: Shenghui Shi <brody.shi@m2semi.com>
No blank lines after Fixes tag please. I have fixed it while applying
--
~Vinod
next prev parent reply other threads:[~2026-02-25 11:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-09 9:36 [PATCH v6] dmaengine: dw-edma: fix MSI data programming for multi-IRQ case Shi-Shenghui
2026-02-09 10:37 ` [PATCH v7] " Shi-Shenghui
2026-02-09 16:45 ` Frank Li
2026-02-25 11:02 ` Vinod Koul [this message]
2026-02-25 11:21 ` Vinod Koul
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