]> git.baikalelectronics.ru Git - kernel.git/commit
spi: pxa2xx: Setup maximum supported DMA transfer length
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Tue, 19 Feb 2019 20:21:28 +0000 (23:21 +0300)
committerMark Brown <broonie@kernel.org>
Wed, 20 Feb 2019 17:14:14 +0000 (17:14 +0000)
commit7e64b5d81710e5d8722d4a80e62054bc5e74fcc5
tree51cea54a7a78747e6af42382232037a8ec12ce30
parent7ef33d54b49466eaf92843eef4254cbb701c1dde
spi: pxa2xx: Setup maximum supported DMA transfer length

When the commit 20b3b4e71fcd

   ("spi: pxa2xx: Switch to SPI core DMA mapping functionality")

switches to SPI core provided DMA helpers, it missed to setup maximum
supported DMA transfer length for the controller and thus users
mistakenly try to send more data than supported with the following
warning:

  ili9341 spi-PRP0001:01: DMA disabled for transfer length 153600 greater than 65536

Setup maximum supported DMA transfer length in order to make users know
the limit.

Fixes: 20b3b4e71fcd ("spi: pxa2xx: Switch to SPI core DMA mapping functionality")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
drivers/spi/spi-pxa2xx.c