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spi/omap-100k: Use core functionality to check validity of transfers

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Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Mark Brown 2013-07-10 15:06:46 +01:00
parent 407d600f1f
commit 69ea672a13
1 changed files with 2 additions and 30 deletions
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32
drivers/spi/spi-omap-100k.c
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@ -424,7 +424,6 @@ static int omap1_spi100k_transfer(struct spi_device *spi, struct spi_message *m)
{
struct omap1_spi100k *spi100k;
unsigned long flags;
struct spi_transfer *t;
m->actual_length = 0;
m->status = -EINPROGRESS;
@ -435,35 +434,6 @@ static int omap1_spi100k_transfer(struct spi_device *spi, struct spi_message *m)
if (spi100k->state == SPI_SHUTDOWN)
return -ESHUTDOWN;
/* reject invalid messages and transfers */
if (list_empty(&m->transfers) || !m->complete)
return -EINVAL;
list_for_each_entry(t, &m->transfers, transfer_list) {
const void *tx_buf = t->tx_buf;
void *rx_buf = t->rx_buf;
unsigned len = t->len;
if (t->speed_hz > OMAP1_SPI100K_MAX_FREQ
|| (len && !(rx_buf || tx_buf))) {
dev_dbg(&spi->dev, "transfer: %d Hz, %d %s%s, %d bpw\n",
t->speed_hz,
len,
tx_buf ? "tx" : "",
rx_buf ? "rx" : "",
t->bits_per_word);
return -EINVAL;
}
if (t->speed_hz && t->speed_hz < OMAP1_SPI100K_MAX_FREQ/(1<<16)) {
dev_dbg(&spi->dev, "%d Hz max exceeds %d\n",
t->speed_hz,
OMAP1_SPI100K_MAX_FREQ/(1<<16));
return -EINVAL;
}
}
spin_lock_irqsave(&spi100k->lock, flags);
list_add_tail(&m->queue, &spi100k->msg_queue);
queue_work(omap1_spi100k_wq, &spi100k->work);
@ -496,6 +466,8 @@ static int omap1_spi100k_probe(struct platform_device *pdev)
master->num_chipselect = 2;
master->mode_bits = MODEBITS;
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32);
master->min_speed_hz = OMAP1_SPI100K_MAX_FREQ/(1<<16);
master->max_speed_hz = OMAP1_SPI100K_MAX_FREQ;
platform_set_drvdata(pdev, master);