diff options
Diffstat (limited to 'drivers/spi/mxc_spi.c')
| -rw-r--r-- | drivers/spi/mxc_spi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c index fad9840..3a45200 100644 --- a/drivers/spi/mxc_spi.c +++ b/drivers/spi/mxc_spi.c @@ -131,6 +131,13 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, return 1; } + /* This driver is currently partly broken, alert the user */ + if (bitlen > 16 && (bitlen % 32)) { + printf("Error: SPI transfer with bitlen=%d is broken.\n", + bitlen); + return 1; + } + for (i = 0, in_l = (u32 *)din, out_l = (u32 *)dout; i < n_blks; i++, in_l++, out_l++, bitlen -= 32) { @@ -142,6 +149,8 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, *(u8 *)din = data; else if (bitlen < 17) *(u16 *)din = data; + else + *in_l = data; } } |