From 8c99268431a117207a89be5167ecd69429fd4bda Mon Sep 17 00:00:00 2001
From: Anatolij Gustschin <agust@denx.de>
Date: Wed, 1 Jun 2011 18:36:49 +0200
Subject: [PATCH] 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>
---
drivers/spi/spi_bitbang.c | 6 +++---
1 file 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;
--
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