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authorAndi Shyti <andi.shyti@samsung.com>2016-06-28 11:41:14 +0900
committerMark Brown <broonie@kernel.org>2016-06-29 22:45:23 +0100
commit730d9d4d11cf48b17d07daaff1f0540642317e09 (patch)
tree603313185f16595a8a7d83fb294fa0be1fdddc6b /drivers/spi/spi-s3c64xx.c
parent11f66f0927bd044c17b2c2884d5103f8eb6cab38 (diff)
spi: s3c64xx: simplify if statement in prepare_transfer function
The whole function is inside an 'if' statement ("!is_polling(sdd)"). Check the opposite of that statement at the beginning and exit, this way we can have one level less of indentation. Remove the goto paths as they are redundant. Signed-off-by: Andi Shyti <andi.shyti@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-s3c64xx.c')
-rw-r--r--drivers/spi/spi-s3c64xx.c50
1 files changed, 22 insertions, 28 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index c65a9e6baefd..6d8486fc668f 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -341,38 +341,32 @@ static int s3c64xx_spi_prepare_transfer(struct spi_master *spi)
dma_filter_fn filter = sdd->cntrlr_info->filter;
struct device *dev = &sdd->pdev->dev;
dma_cap_mask_t mask;
- int ret;
- if (!is_polling(sdd)) {
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
-
- /* Acquire DMA channels */
- sdd->rx_dma.ch = dma_request_slave_channel_compat(mask, filter,
- sdd->cntrlr_info->dma_rx, dev, "rx");
- if (!sdd->rx_dma.ch) {
- dev_err(dev, "Failed to get RX DMA channel\n");
- ret = -EBUSY;
- goto out;
- }
- spi->dma_rx = sdd->rx_dma.ch;
-
- sdd->tx_dma.ch = dma_request_slave_channel_compat(mask, filter,
- sdd->cntrlr_info->dma_tx, dev, "tx");
- if (!sdd->tx_dma.ch) {
- dev_err(dev, "Failed to get TX DMA channel\n");
- ret = -EBUSY;
- goto out_rx;
- }
- spi->dma_tx = sdd->tx_dma.ch;
+ if (is_polling(sdd))
+ return 0;
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ /* Acquire DMA channels */
+ sdd->rx_dma.ch = dma_request_slave_channel_compat(mask, filter,
+ sdd->cntrlr_info->dma_rx, dev, "rx");
+ if (!sdd->rx_dma.ch) {
+ dev_err(dev, "Failed to get RX DMA channel\n");
+ return -EBUSY;
}
+ spi->dma_rx = sdd->rx_dma.ch;
- return 0;
+ sdd->tx_dma.ch = dma_request_slave_channel_compat(mask, filter,
+ sdd->cntrlr_info->dma_tx, dev, "tx");
+ if (!sdd->tx_dma.ch) {
+ dev_err(dev, "Failed to get TX DMA channel\n");
+ dma_release_channel(sdd->rx_dma.ch);
+ return -EBUSY;
+ }
+ spi->dma_tx = sdd->tx_dma.ch;
-out_rx:
- dma_release_channel(sdd->rx_dma.ch);
-out:
- return ret;
+ return 0;
}
static int s3c64xx_spi_unprepare_transfer(struct spi_master *spi)

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