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From: Andi Shyti <andi.shyti@kernel.org>
To: Loic Poulain <loic.poulain@oss.qualcomm.com>
Cc: Robert Foss <rfoss@kernel.org>, Vinod Koul <vkoul@kernel.org>,
	 Wolfram Sang <wsa@kernel.org>,
	Bjorn Andersson <andersson@kernel.org>,
	 Todor Tomov <todor.too@gmail.com>,
	linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	 linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i2c: qcom-cci: Fix HALT_ACK reset request being dropped
Date: Tue, 13 Oct 2026 13:08:30 +0200	[thread overview]
Message-ID: <as4RHTi0OppNhpOO@zenone.zhora.eu> (raw)
In-Reply-To: <20261012-cci-fixes-v1-1-8cd4eb1fc5f9@oss.qualcomm.com>

Hi Loic,

On Mon, Oct 12, 2026 at 02:54:56PM +0200, Loic Poulain wrote:
> A HALT_ACK interrupt indicates that the corresponding I2C master has
> entered the halted state and must be reset before further operation.
> 
> The M0 and M1 HALT_ACK status bits may be asserted simultaneously in a
> single interrupt. However, the interrupt handler currently overwrites
> the reset mask when processing each HALT_ACK condition, causing the
> first reset request to be lost if both events are reported together.
> 
> Accumulate reset requests instead of overwriting them so that both
> masters are properly reset when M0 and M1 HALT_ACK events occur in the
> same interrupt.
> 
> Fixes: e517526195de4 ("i2c: Add Qualcomm CCI I2C driver")
> Signed-off-by: Loic Poulain <loic.poulain@oss.qualcomm.com>

pushed to i2c/i2c-fixes.

Thanks,
Andi

      parent reply	other threads:[~2026-10-13 11:08 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-12 12:54 [PATCH] i2c: qcom-cci: Fix HALT_ACK reset request being dropped Loic Poulain
2026-10-12 14:02 ` Konrad Dybcio
2026-10-13 11:08 ` Andi Shyti [this message]

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