Re: [RFT 00/15] tty: serial: switch from circ_buf to kfifo

[Richard Genoud]

Le 19/03/2024 à 10:52, Jiri Slaby (SUSE) a écrit :
> This series switches tty serial layer to use kfifo instead of circ_buf.
> Excerpt from the switching patch:
> """
> Switch from struct circ_buf to proper kfifo. kfifo provides much better
> API, esp. when wrap-around of the buffer needs to be taken into account.
> Look at pl011_dma_tx_refill() or cpm_uart_tx_pump() changes for example.
>
> Kfifo API can also fill in scatter-gather DMA structures, so it easier
> for that use case too. Look at lpuart_dma_tx() for example. Note that
> not all drivers can be converted to that (like atmel_serial), they
> handle DMA specially.
>
> Note that usb-serial uses kfifo for TX for ages.
> """
>
> This is Request for Testing as I cannot test all the changes
> (obviously). So please test your HW's serial properly.

Tested-by: Richard Genoud <richard.genoud@xxxxxxxxx> # on at91sam9g20-ek sama5d3_xplained and sama5d2_xplained