Module: xenomai-3 Branch: master Commit: f6d88b8d4c0d1e68673726dca5d668c29f275662 URL: http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=f6d88b8d4c0d1e68673726dca5d668c29f275662
Author: Philippe Gerum <r...@xenomai.org> Date: Wed Aug 10 10:14:28 2016 +0200 drivers/spi: fix read/write transfer descriptor --- kernel/drivers/spi/spi-bcm2835.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/kernel/drivers/spi/spi-bcm2835.c b/kernel/drivers/spi/spi-bcm2835.c index 117cf38..da44bf7 100644 --- a/kernel/drivers/spi/spi-bcm2835.c +++ b/kernel/drivers/spi/spi-bcm2835.c @@ -324,13 +324,10 @@ static ssize_t bcm2835_read(struct rtdm_spi_remote_slave *slave, struct spi_master_bcm2835 *spim = to_master_bcm2835(slave); struct spi_slave_bcm2835 *bcm = to_slave_bcm2835(slave); - if (bcm->io_len == 0) - return -EINVAL; /* No I/O buffers set. */ - - spim->tx_len = bcm->io_len / 2; - spim->rx_len = spim->tx_len; + spim->tx_len = len; + spim->rx_len = len; spim->tx_buf = NULL; - spim->rx_buf = bcm->io_virt; + spim->rx_buf = rx; return do_transfer_irq(slave) ?: len; } @@ -341,12 +338,9 @@ static ssize_t bcm2835_write(struct rtdm_spi_remote_slave *slave, struct spi_master_bcm2835 *spim = to_master_bcm2835(slave); struct spi_slave_bcm2835 *bcm = to_slave_bcm2835(slave); - if (bcm->io_len == 0) - return -EINVAL; /* No I/O buffers set. */ - - spim->tx_len = bcm->io_len / 2; - spim->rx_len = spim->tx_len; - spim->tx_buf = bcm->io_virt + bcm->io_len / 2; + spim->tx_len = len; + spim->rx_len = len; + spim->tx_buf = tx; spim->rx_buf = NULL; return do_transfer_irq(slave) ?: len; _______________________________________________ Xenomai-git mailing list Xenomai-git@xenomai.org https://xenomai.org/mailman/listinfo/xenomai-git