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| author | Andrew Bresticker <abrestic@chromium.org> | 2014-12-16 13:05:44 -0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-12-22 17:52:07 +0000 |
| commit | c0e7dc21d33caa31296d1e4af1e99008359f1b64 (patch) | |
| tree | 33501b62eb403f704e173fff2780536d81968d70 /drivers/spi/spi-img-spfi.c | |
| parent | 97bf6af1f928216fd6c5a66e8a57bfa95a659672 (diff) | |
| download | lwn-c0e7dc21d33caa31296d1e4af1e99008359f1b64.tar.gz lwn-c0e7dc21d33caa31296d1e4af1e99008359f1b64.zip | |
spi: img-spfi: Enable controller before starting TX DMA
It is recommended that the SPFI controller be enabled (i.e. setting
SPFI_EN in SPFI_CONTROL) before TX DMA begins.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-img-spfi.c')
| -rw-r--r-- | drivers/spi/spi-img-spfi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c index b410499cddca..cd14556852bf 100644 --- a/drivers/spi/spi-img-spfi.c +++ b/drivers/spi/spi-img-spfi.c @@ -390,14 +390,14 @@ static int img_spfi_start_dma(struct spi_master *master, dma_async_issue_pending(spfi->rx_ch); } + spfi_start(spfi); + if (xfer->tx_buf) { spfi->tx_dma_busy = true; dmaengine_submit(txdesc); dma_async_issue_pending(spfi->tx_ch); } - spfi_start(spfi); - return 1; stop_dma: |