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spi/fsl_espi: fix wrong setting of the address in the command buffer 

Or else we can't operate on the right address when the trans length
is greater than 65535.

Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Mingkai Hu 2010-12-21 09:27:02 +08:00 committed by Grant Likely
parent e6289d63a6
commit 0dd2c96f19
1 changed files with 9 additions and 7 deletions
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16
drivers/spi/spi_fsl_espi.c
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@ -258,18 +258,18 @@ static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t)
return mpc8xxx_spi->count;
}
static void fsl_espi_addr2cmd(unsigned int addr, u8 *cmd)
static inline void fsl_espi_addr2cmd(unsigned int addr, u8 *cmd)
{
if (cmd[1] && cmd[2] && cmd[3]) {
if (cmd) {
cmd[1] = (u8)(addr >> 16);
cmd[2] = (u8)(addr >> 8);
cmd[3] = (u8)(addr >> 0);
}
}
static unsigned int fsl_espi_cmd2addr(u8 *cmd)
static inline unsigned int fsl_espi_cmd2addr(u8 *cmd)
{
if (cmd[1] && cmd[2] && cmd[3])
if (cmd)
return cmd[1] << 16 | cmd[2] << 8 | cmd[3] << 0;
return 0;
@ -395,9 +395,11 @@ static void fsl_espi_rw_trans(struct spi_message *m,
}
}
addr = fsl_espi_cmd2addr(local_buf);
addr += pos;
fsl_espi_addr2cmd(addr, local_buf);
if (pos > 0) {
addr = fsl_espi_cmd2addr(local_buf);
addr += pos;
fsl_espi_addr2cmd(addr, local_buf);
}
espi_trans->n_tx = n_tx;
espi_trans->n_rx = trans_len;