[PATCH v3] i3c: master: svc: Fix npcm845 FIFO_EMPTY quirk

Alexandre Belloni alexandre.belloni at bootlin.com
Wed Jul 30 16:40:43 PDT 2025


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



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