[PATCH v2] Lattice ECP3 FPGA: Correct endianness

[Jean-Michel Hautbois]

This code corrects endianness and avoids a sparse error.
Tested with Lattice ECP3-35 with Freescale i.MX6.

Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@xxxxxxxxxxx>
Acked-by: Stefan Roese <sr@xxxxxxx>
---
 drivers/misc/lattice-ecp3-config.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/misc/lattice-ecp3-config.c
b/drivers/misc/lattice-ecp3-config.c
index bb26f08..957a66c 100644
--- a/drivers/misc/lattice-ecp3-config.c
+++ b/drivers/misc/lattice-ecp3-config.c
@@ -92,8 +92,8 @@ static void firmware_load(const struct firmware *fw,
void *context)
        /* Trying to speak with the FPGA via SPI... */
        txbuf[0] = FPGA_CMD_READ_ID;
        ret = spi_write_then_read(spi, txbuf, 8, rxbuf, rx_len);
-       dev_dbg(&spi->dev, "FPGA JTAG ID=%08x\n", *(u32 *)&rxbuf[4]);
-       jedec_id = *(u32 *)&rxbuf[4];
+       jedec_id = be32_to_cpu(*(__be32 *)&rxbuf[4]);
+       dev_dbg(&spi->dev, "FPGA JTAG ID=%08x\n", jedec_id);

        for (i = 0; i < ARRAY_SIZE(ecp3_dev); i++) {
                if (jedec_id == ecp3_dev[i].jedec_id)
@@ -110,7 +110,8 @@ static void firmware_load(const struct firmware
*fw, void *context)

        txbuf[0] = FPGA_CMD_READ_STATUS;
        ret = spi_write_then_read(spi, txbuf, 8, rxbuf, rx_len);
-       dev_dbg(&spi->dev, "FPGA Status=%08x\n", *(u32 *)&rxbuf[4]);
+       status = be32_to_cpu(*(__be32 *)&rxbuf[4]);
+       dev_dbg(&spi->dev, "FPGA Status=%08x\n", status);

        buffer = kzalloc(fw->size + 8, GFP_KERNEL);
        if (!buffer) {
@@ -142,7 +143,7 @@ static void firmware_load(const struct firmware
*fw, void *context)
        for (i = 0; i < FPGA_CLEAR_LOOP_COUNT; i++) {
                txbuf[0] = FPGA_CMD_READ_STATUS;
                ret = spi_write_then_read(spi, txbuf, 8, rxbuf, rx_len);
-               status = *(u32 *)&rxbuf[4];
+               status = be32_to_cpu(*(u32 *)&rxbuf[4]);
                if (status == FPGA_STATUS_CLEARED)
                        break;

@@ -165,8 +166,8 @@ static void firmware_load(const struct firmware
*fw, void *context)

        txbuf[0] = FPGA_CMD_READ_STATUS;
        ret = spi_write_then_read(spi, txbuf, 8, rxbuf, rx_len);
-       dev_dbg(&spi->dev, "FPGA Status=%08x\n", *(u32 *)&rxbuf[4]);
-       status = *(u32 *)&rxbuf[4];
+       status = be32_to_cpu(*(__be32 *)&rxbuf[4]);
+       dev_dbg(&spi->dev, "FPGA Status=%08x\n", status);

        /* Check result */
        if (status & FPGA_STATUS_DONE)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/