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| author | Anatolij Gustschin <agust@denx.de> | 2011-06-01 18:36:49 +0200 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-06-03 15:01:14 -0600 |
| commit | 8c99268431a117207a89be5167ecd69429fd4bda (patch) | |
| tree | d5c288a5b473be7fd5bc23b396ed42cbaf8f81dd /drivers/spi | |
| parent | 8b20c8cb89b733f5a73fad1f7ad7cff8325e0034 (diff) | |
| download | linux-stable-8c99268431a117207a89be5167ecd69429fd4bda.tar.gz linux-stable-8c99268431a117207a89be5167ecd69429fd4bda.tar.bz2 linux-stable-8c99268431a117207a89be5167ecd69429fd4bda.zip | |
spi/bitbang: initialize bits_per_word as specified by spi message
SPI protocol drivers can submit messages specifying needed bits_per_word
parameter for a message transfer. The bitbang driver currently ignores
bits_per_word given by a singe message and always uses master's
bits_per_word parameter. Only use master's bits_per_word when a
message didn't specify needed bits_per_word for ongoing transfer.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi_bitbang.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/spi/spi_bitbang.c b/drivers/spi/spi_bitbang.c index 14a63f6010d1..bb38c83ba210 100644 --- a/drivers/spi/spi_bitbang.c +++ b/drivers/spi/spi_bitbang.c @@ -68,7 +68,7 @@ static unsigned bitbang_txrx_8( unsigned ns, struct spi_transfer *t ) { - unsigned bits = spi->bits_per_word; + unsigned bits = t->bits_per_word ? : spi->bits_per_word; unsigned count = t->len; const u8 *tx = t->tx_buf; u8 *rx = t->rx_buf; @@ -94,7 +94,7 @@ static unsigned bitbang_txrx_16( unsigned ns, struct spi_transfer *t ) { - unsigned bits = spi->bits_per_word; + unsigned bits = t->bits_per_word ? : spi->bits_per_word; unsigned count = t->len; const u16 *tx = t->tx_buf; u16 *rx = t->rx_buf; @@ -120,7 +120,7 @@ static unsigned bitbang_txrx_32( unsigned ns, struct spi_transfer *t ) { - unsigned bits = spi->bits_per_word; + unsigned bits = t->bits_per_word ? : spi->bits_per_word; unsigned count = t->len; const u32 *tx = t->tx_buf; u32 *rx = t->rx_buf; |