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Commit 8c992684 authored by Anatolij Gustschin's avatar Anatolij Gustschin Committed by Grant Likely
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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: default avatarAnatolij Gustschin <agust@denx.de>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 8b20c8cb

drivers/spi/spi_bitbang.c

+3 −3
Original line number Diff line number Diff line
@@ -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;