netdev - [PATCH v3 net-next 0/2] Adapt the sja1105 DSA driver to the SPI controller's transfer limits

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Date:   Fri, 21 May 2021 00:16:55 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
        Guenter Roeck <linux@...ck-us.net>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: [PATCH v3 net-next 0/2] Adapt the sja1105 DSA driver to the SPI controller's transfer limits

From: Vladimir Oltean <vladimir.oltean@....com>

This series changes the SPI transfer procedure in sja1105 to take into
consideration the buffer size limitations that the SPI controller driver
might have.

Changes in v3:
- Avoid a signed vs unsigned issue in the interpretation of SIZE_MAX.
- Move the max transfer length checks to probe time, since nothing will
  change dynamically.

Changes in v2:
Remove the driver's use of cs_change and send multiple, smaller SPI
messages instead of a single large one.

Vladimir Oltean (2):
  net: dsa: sja1105: send multiple spi_messages instead of using
    cs_change
  net: dsa: sja1105: adapt to a SPI controller with a limited max
    transfer size

 drivers/net/dsa/sja1105/sja1105.h             |  1 +
 drivers/net/dsa/sja1105/sja1105_main.c        | 28 ++++++++
 drivers/net/dsa/sja1105/sja1105_spi.c         | 66 +++++--------------
 .../net/dsa/sja1105/sja1105_static_config.h   |  2 +
 4 files changed, 49 insertions(+), 48 deletions(-)

-- 
2.25.1