linux-kernel - [PATCH v5 0/3] Reliability improvements for Microchip MPF FPGA manager

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Date:   Fri, 30 Dec 2022 12:29:19 +0300
From:   Ivan Bornyakov <i.bornyakov@...rotek.ru>
To:     linux-fpga@...r.kernel.org
Cc:     Ivan Bornyakov <i.bornyakov@...rotek.ru>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Moritz Fischer <mdf@...nel.org>, Wu Hao <hao.wu@...el.com>,
        Xu Yilun <yilun.xu@...el.com>, Tom Rix <trix@...hat.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        linux-kernel@...r.kernel.org, system@...rotek.ru
Subject: [PATCH v5 0/3] Reliability improvements for Microchip MPF FPGA manager

A couple of reliability improvements for Microchip Polarfire FPGA
manager:
 * move SPI I/O buffers out of stack
 * rewrite status polling routine in a time measurable way

Also improve mpf_ops_write() code readability by separating single data
frame writing routine.

ChangeLog:
  v1:
[https://lore.kernel.org/linux-fpga/20221223123854.8023-1-i.bornyakov@metrotek.ru/]
  v2:
    * split into 3 distinct patches
[https://lore.kernel.org/linux-fpga/20221226142326.8111-1-i.bornyakov@metrotek.ru/]
  v3:
    * fix polling stop condition in mpf_poll_status() as Ilpo suggested.
[https://lore.kernel.org/linux-fpga/20221227100450.2257-1-i.bornyakov@metrotek.ru/]
  v4:
    * more verbose comment for mpf_poll_status()
[https://lore.kernel.org/linux-fpga/20221229104604.2496-1-i.bornyakov@metrotek.ru/]
  v5:
    * revord "fpga: microchip-spi: move SPI I/O buffers out of stack"
      commit message "Use allocated buffers" -> "Use cacheline aligned
      buffers"
    * drop __aligned(ARCH_KMALLOC_MINALIGN) attribute of struct mpf_priv
      member "rx". tx and rx are used synchronously by dma, they could
      share a cacheline.

Ivan Bornyakov (3):
  fpga: microchip-spi: move SPI I/O buffers out of stack
  fpga: microchip-spi: rewrite status polling in a time measurable way
  fpga: microchip-spi: separate data frame write routine

 drivers/fpga/microchip-spi.c | 145 +++++++++++++++++++----------------
 1 file changed, 79 insertions(+), 66 deletions(-)

-- 
2.38.2