UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

i2c: tegra: Maintain CPU endianness 

Support CPU BE mode by adding endianness conversion for memcpy interactions.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Dmitry Osipenko 2015-01-26 19:55:02 +03:00 committed by Wolfram Sang
parent 9136c5463f
commit 8c340f6090
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/i2c/busses/i2c-tegra.c
View File

@ -286,6 +286,7 @@ static int tegra_i2c_empty_rx_fifo(struct tegra_i2c_dev *i2c_dev)
if (rx_fifo_avail > 0 && buf_remaining > 0) { if (rx_fifo_avail > 0 && buf_remaining > 0) {
BUG_ON(buf_remaining > 3); BUG_ON(buf_remaining > 3);
val = i2c_readl(i2c_dev, I2C_RX_FIFO); val = i2c_readl(i2c_dev, I2C_RX_FIFO);
val = cpu_to_le32(val);
memcpy(buf, &val, buf_remaining); memcpy(buf, &val, buf_remaining);
buf_remaining = 0; buf_remaining = 0;
rx_fifo_avail--; rx_fifo_avail--;
@ -344,6 +345,7 @@ static int tegra_i2c_fill_tx_fifo(struct tegra_i2c_dev *i2c_dev)
if (tx_fifo_avail > 0 && buf_remaining > 0) { if (tx_fifo_avail > 0 && buf_remaining > 0) {
BUG_ON(buf_remaining > 3); BUG_ON(buf_remaining > 3);
memcpy(&val, buf, buf_remaining); memcpy(&val, buf, buf_remaining);
val = le32_to_cpu(val);
/* Again update before writing to FIFO to make sure isr sees. */ /* Again update before writing to FIFO to make sure isr sees. */
i2c_dev->msg_buf_remaining = 0; i2c_dev->msg_buf_remaining = 0;