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-rw-r--r--drivers/spi/mxc_spi.c9
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;
}
}