diff options
Diffstat (limited to 'drivers/spi/mpc8xxx_spi.c')
| -rw-r--r-- | drivers/spi/mpc8xxx_spi.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/spi/mpc8xxx_spi.c b/drivers/spi/mpc8xxx_spi.c index e09e91c8e9..63e1a150f8 100644 --- a/drivers/spi/mpc8xxx_spi.c +++ b/drivers/spi/mpc8xxx_spi.c @@ -112,9 +112,9 @@ int spi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, void *din, /* Handle data in 32-bit chunks */ while (num_blks--) { - int tm; u32 tmpdout = 0; uchar xfer_bitlen = (bitlen >= 32 ? 32 : bitlen); + ulong start; clrbits_be32(&spi->mode, SPI_MODE_EN); @@ -148,7 +148,8 @@ int spi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, void *din, * or time out (1 second = 1000 ms) * The NE event must be read and cleared first */ - for (tm = 0; tm < SPI_TIMEOUT; ++tm) { + start = get_timer(0); + do { u32 event = in_be32(&spi->event); bool have_ne = event & SPI_EV_NE; bool have_nf = event & SPI_EV_NF; @@ -173,9 +174,11 @@ int spi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, void *din, */ if (have_nf) break; - } - if (tm >= SPI_TIMEOUT) + mdelay(1); + } while (get_timer(start) < SPI_TIMEOUT); + + if (get_timer(start) >= SPI_TIMEOUT) debug("*** %s: Time out during SPI transfer\n", __func__); |