linux-kernel - Re: [PATCH v3] i3c: master: svc: Fix npcm845 FIFO

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Message-ID: <175391871301.1768453.9271887329370264388.b4-ty@bootlin.com>
Date: Thu, 31 Jul 2025 01:40:43 +0200
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: frank.li@....com, miquel.raynal@...tlin.com,
	linux-i3c@...ts.infradead.org,
	Stanley Chu <stanley.chuys@...il.com>
Cc: linux-kernel@...r.kernel.org, tomer.maimon@...oton.com,
	kwliu@...oton.com, yschu@...oton.com
Subject: Re: [PATCH v3] i3c: master: svc: Fix npcm845 FIFO_EMPTY quirk

On Wed, 30 Jul 2025 08:37:19 +0800, Stanley Chu wrote:
> In a private write transfer, the driver pre-fills the FIFO to work around
> the FIFO_EMPTY quirk. However, if an IBIWON event occurs, the hardware
> emits a NACK and the driver initiates a retry. During the retry, driver
> attempts to pre-fill the FIFO again if there is remaining data, but since
> the FIFO is already full, this leads to data loss.
> 
> Check available space in FIFO to prevent overflow.
> 
> [...]

Applied, thanks!

[1/1] i3c: master: svc: Fix npcm845 FIFO_EMPTY quirk
      https://git.kernel.org/abelloni/c/bc4a09d8e79c

Best regards,

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com