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(parent: 3fe82d1) | patch
spi: sun4i: fix FIFO limit
authorMichal Suchanek <hramrach@gmail.com>
Mon, 13 Jun 2016 17:46:49 +0000 (17:46 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 10 Aug 2016 10:54:47 +0000 (12:54 +0200)
commitbb70d865a93137abda0f7925344dd9e0591b9677
tree2c9acf8980a68d9ca0aacda05b3ca4142f930c4etree | snapshot
parent3fe82d1e0b1c65c04c4b4f6cf330cae6b34ff6bccommit | diff
spi: sun4i: fix FIFO limit

commit 6d9fe44bd73d567d04d3a68a2d2fa521ab9532f2 upstream.

When testing SPI without DMA I noticed that filling the FIFO on the
spi controller causes timeout.

Always leave room for one byte in the FIFO.

Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/spi/spi-sun4i.c diff | blob | history
wrapfs-4.6.y