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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2018-12-07 16:07:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-29 15:37:56 +0300 |
| commit | 85ac860a5fdfd57f90d3a1163ebfa7906dbdf2c0 (patch) | |
| tree | aa12991c72c8cd6956afd6b169e748e278851990 /drivers/eisa/eisa-bus.c | |
| parent | 0867cfaabcf7a05568fc9e75bd3e134d517e6a05 (diff) | |
| download | linux-85ac860a5fdfd57f90d3a1163ebfa7906dbdf2c0.tar.xz | |
gpio: max7301: fix driver for use with CONFIG_VMAP_STACK
commit abf221d2f51b8ce7b9959a8953f880a8b0a1400d upstream.
spi_read() and spi_write() require DMA-safe memory. When
CONFIG_VMAP_STACK is selected, those functions cannot be used
with buffers on stack.
This patch replaces calls to spi_read() and spi_write() by
spi_write_then_read() which doesn't require DMA-safe buffers.
Fixes: 0c36ec314735 ("gpio: gpio driver for max7301 SPI GPIO expander")
Cc: <stable@vger.kernel.org>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/eisa/eisa-bus.c')
0 files changed, 0 insertions, 0 deletions