linux-kernel - Re: [PATCH 1/2] spi: spi-cadence: Avoid read of RX FIFO before its ready

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Date:   Mon, 15 May 2023 20:09:52 +0900
From:   Mark Brown <broonie@...nel.org>
To:     Charles Keepax <ckeepax@...nsource.cirrus.com>
Cc:     srinivas.goud@....com, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org, patches@...nsource.cirrus.com
Subject: Re: [PATCH 1/2] spi: spi-cadence: Avoid read of RX FIFO before its
 ready

On Tue, 09 May 2023 17:41:52 +0100, Charles Keepax wrote:
> Recent changes to cdns_spi_irq introduced some issues.
> 
> Firstly, when writing the end of a longer transaction, the code in
> cdns_spi_irq will write data into the TX FIFO, then immediately
> fall into the if (!xspi->tx_bytes) path and attempt to read data
> from the RX FIFO. However this required waiting for the TX FIFO to
> empty before the RX data was ready.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/2] spi: spi-cadence: Avoid read of RX FIFO before its ready
      commit: a84c11e16dc2cc1faad2e688f8c12beeb369d80c
[2/2] spi: spi-cadence: Only overlap FIFO transactions in slave mode
      commit: a0eb7be22c0f934d1fe7e1131f174ef5bc59d3f9

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark