diff options
Diffstat (limited to 'drivers/spi/spi-rspi.c')
| -rw-r--r-- | drivers/spi/spi-rspi.c | 23 |
1 files changed, 8 insertions, 15 deletions
diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index f6bac9e77d06..f9189a0c8cec 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -665,15 +665,12 @@ static bool rspi_can_dma(struct spi_master *master, struct spi_device *spi, static int rspi_dma_check_then_transfer(struct rspi_data *rspi, struct spi_transfer *xfer) { - if (rspi->master->can_dma && __rspi_can_dma(rspi, xfer)) { - /* rx_buf can be NULL on RSPI on SH in TX-only Mode */ - int ret = rspi_dma_transfer(rspi, &xfer->tx_sg, - xfer->rx_buf ? &xfer->rx_sg : NULL); - if (ret != -EAGAIN) - return 0; - } + if (!rspi->master->can_dma || !__rspi_can_dma(rspi, xfer)) + return -EAGAIN; - return -EAGAIN; + /* rx_buf can be NULL on RSPI on SH in TX-only Mode */ + return rspi_dma_transfer(rspi, &xfer->tx_sg, + xfer->rx_buf ? &xfer->rx_sg : NULL); } static int rspi_common_transfer(struct rspi_data *rspi, @@ -724,7 +721,7 @@ static int rspi_rz_transfer_one(struct spi_master *master, return rspi_common_transfer(rspi, xfer); } -static int qspi_trigger_transfer_out_int(struct rspi_data *rspi, const u8 *tx, +static int qspi_trigger_transfer_out_in(struct rspi_data *rspi, const u8 *tx, u8 *rx, unsigned int len) { int i, n, ret; @@ -771,12 +768,8 @@ static int qspi_transfer_out_in(struct rspi_data *rspi, if (ret != -EAGAIN) return ret; - ret = qspi_trigger_transfer_out_int(rspi, xfer->tx_buf, + return qspi_trigger_transfer_out_in(rspi, xfer->tx_buf, xfer->rx_buf, xfer->len); - if (ret < 0) - return ret; - - return 0; } static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer) @@ -1300,7 +1293,7 @@ error1: return ret; } -static struct platform_device_id spi_driver_ids[] = { +static const struct platform_device_id spi_driver_ids[] = { { "rspi", (kernel_ulong_t)&rspi_ops }, { "rspi-rz", (kernel_ulong_t)&rspi_rz_ops }, { "qspi", (kernel_ulong_t)&qspi_ops }, |