linux-kernel - Re: [PATCH] soundwire: bus: fix off-by-one when allocating slave IDs

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Message-Id: <176830376359.826049.1740927035022094922.b4-ty@kernel.org>
Date: Tue, 13 Jan 2026 16:59:23 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Bard Liao <yung-chuan.liao@...ux.intel.com>, 
 Pierre-Louis Bossart <pierre-louis.bossart@...ux.dev>, 
 Charles Keepax <ckeepax@...nsource.cirrus.com>, linux-sound@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
Cc: dan.carpenter@...aro.org, kernel-janitors@...r.kernel.org, 
 error27@...il.com, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] soundwire: bus: fix off-by-one when allocating slave
 IDs


On Sat, 10 Jan 2026 12:19:58 -0800, Harshit Mogalapalli wrote:
> ida_alloc_max() interprets its max argument as inclusive.
> 
> Using SDW_FW_MAX_DEVICES(16) therefore allows an ID of 16 to be
> allocated, but the IRQ domain created for the bus is sized for IDs
> 0-15.  If 16 is returned, irq_create_mapping() fails and the driver
> ends up with an invalid IRQ mapping.
> 
> [...]

Applied, thanks!

[1/1] soundwire: bus: fix off-by-one when allocating slave IDs
      commit: 12d4fd9a657174496677cff2841315090f1c11fc

Best regards,
-- 
~Vinod