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author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-12-02 12:54:25 +0900 |
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committer | Grant Likely <grant.likely@secretlab.ca> | 2012-12-06 14:03:14 +0000 |
commit | b3a223ee2d1a4635b0643c547bc0096a37334ed1 (patch) | |
tree | 0b0e7891825af66e8ecfdc6e3f14bbf2b1941991 /drivers/spi/spi-au1550.c | |
parent | 266904c77911fdc0a064d97e2f06034b824c23ac (diff) | |
download | linux-b3a223ee2d1a4635b0643c547bc0096a37334ed1.tar.bz2 |
spi: Remove SPI_BUFSIZ restriction on spi_write_then_read()
In order to avoid constantly allocating and deallocating there is a fixed
buffer which spi_write_then_read() uses for transfers, with an early error
check to ensure that the transfer fits within the buffer. This limits the
size of transfers to this size, currently max(32, SMP_CACHE_BYTES).
Since we can dynamically allocate and in fact already have a fallback
to do so when there is contention for the fixed buffer remove this
restriction and instead dynamically allocate a suitably sized buffer if
the transfer won't fit.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/spi/spi-au1550.c')
0 files changed, 0 insertions, 0 deletions