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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2023-07-10 18:49:20 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-07-10 18:27:44 +0100 |
| commit | 2b308e7176e366a52a07a49868e3b1a295e56785 (patch) | |
| tree | 4fe69f82ce75a9a58616459590397f5bedae9dea /drivers/spi/spi.c | |
| parent | 440c47331bdb889e24128c75387c695ca81d9b9b (diff) | |
| download | linux-stable-2b308e7176e366a52a07a49868e3b1a295e56785.tar.gz linux-stable-2b308e7176e366a52a07a49868e3b1a295e56785.tar.bz2 linux-stable-2b308e7176e366a52a07a49868e3b1a295e56785.zip | |
spi: Replace if-else-if by bitops and multiplications
Instead of if-else-if, simply call roundup_pow_of_two(BITS_PER_BYTES()).
Note, there is no division assumed as compiler may optimize it away.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230710154932.68377-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 6d74218cf38e..125dea8fae00 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3643,13 +3643,7 @@ int spi_split_transfers_maxwords(struct spi_controller *ctlr, size_t maxsize; int ret; - if (xfer->bits_per_word <= 8) - maxsize = maxwords; - else if (xfer->bits_per_word <= 16) - maxsize = 2 * maxwords; - else - maxsize = 4 * maxwords; - + maxsize = maxwords * roundup_pow_of_two(BITS_TO_BYTES(xfer->bits_per_word)); if (xfer->len > maxsize) { ret = __spi_split_transfer_maxsize(ctlr, msg, &xfer, maxsize, gfp); |