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(parent: 873b6e3) | 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 09:49:28 +0000 (11:49 +0200)
commit9162d29bc48a43a30217fc1fd939023a75ce604b
tree10b09a302df594bd9c0234f4bcea05bb6b725a22tree | snapshot
parent873b6e316a581c976a29a1d8c889c76394d7393dcommit | 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
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