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| author | Torsten Fleischer <torfl6749@gmail.com> | 2014-11-07 18:11:58 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-11-08 10:12:57 +0100 |
| commit | cfb4bbd8fbed76a6b715916fabeca4597cb38721 (patch) | |
| tree | 738d94a5ed02713d5f82c8f2ec8d8df9f7e1437f /Documentation/devicetree | |
| parent | spi: spi-gpio: Add dt support for a single device with no chip select (diff) | |
| download | linux-cfb4bbd8fbed76a6b715916fabeca4597cb38721.tar.xz linux-cfb4bbd8fbed76a6b715916fabeca4597cb38721.zip | |
spi: spi-gpio: Fix compiler warning when building for 64 bit systems
The assignment of SPI_GPIO_NO_CHIPSELECT to cs_gpios[0] causes the following
compiler warning, when building for 64 bit systems:
"warning: overflow in implicit constant conversion [-Woverflow]".
This is because the SPI_GPIO_NO_CHIPSELECT flag is a '-1' type casted to
unsigned long and cs_gpios is of the type int.
Furthermore the chip select's GPIO number is locally stored as unsigned int
and compared with SPI_GPIO_NO_CHIPSELECT. Thus the result of the comparison
is always false, if unsigned long and unsigned int have a different size.
As part of the fix this patch adds a check for the device tree's cs-gpios
property.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Torsten Fleischer <torfl6749@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree')
0 files changed, 0 insertions, 0 deletions