diff options
| author | Wei Yongjun <weiyongjun1@huawei.com> | 2020-05-06 15:56:07 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-05-06 17:55:14 +0300 |
| commit | dd4441ab1fa1e2787a5f218f92d8ead1aa5ce6b5 (patch) | |
| tree | 827a0b77cb279d65578ceef9c837ba736cd16007 /drivers/spi/spi-bcm2835.c | |
| parent | 5b684514af9052fdbaa60895620f75928a134196 (diff) | |
| download | linux-dd4441ab1fa1e2787a5f218f92d8ead1aa5ce6b5.tar.xz | |
spi: bcm2835: Fix error return code in bcm2835_dma_init()
Fix to return negative error code -ENOMEM from the dma mapping error
handling case instead of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20200506125607.90952-1-weiyongjun1@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-bcm2835.c')
| -rw-r--r-- | drivers/spi/spi-bcm2835.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c index e10b8f3b4bab..cad3458e23ed 100644 --- a/drivers/spi/spi-bcm2835.c +++ b/drivers/spi/spi-bcm2835.c @@ -940,6 +940,7 @@ static int bcm2835_dma_init(struct spi_controller *ctlr, struct device *dev, if (dma_mapping_error(ctlr->dma_tx->device->dev, bs->fill_tx_addr)) { dev_err(dev, "cannot map zero page - not using DMA mode\n"); bs->fill_tx_addr = 0; + ret = -ENOMEM; goto err_release; } @@ -949,6 +950,7 @@ static int bcm2835_dma_init(struct spi_controller *ctlr, struct device *dev, DMA_MEM_TO_DEV, 0); if (!bs->fill_tx_desc) { dev_err(dev, "cannot prepare fill_tx_desc - not using DMA mode\n"); + ret = -ENOMEM; goto err_release; } @@ -979,6 +981,7 @@ static int bcm2835_dma_init(struct spi_controller *ctlr, struct device *dev, if (dma_mapping_error(ctlr->dma_rx->device->dev, bs->clear_rx_addr)) { dev_err(dev, "cannot map clear_rx_cs - not using DMA mode\n"); bs->clear_rx_addr = 0; + ret = -ENOMEM; goto err_release; } @@ -989,6 +992,7 @@ static int bcm2835_dma_init(struct spi_controller *ctlr, struct device *dev, DMA_MEM_TO_DEV, 0); if (!bs->clear_rx_desc[i]) { dev_err(dev, "cannot prepare clear_rx_desc - not using DMA mode\n"); + ret = -ENOMEM; goto err_release; } |