diff options
| author | David Hendricks <dhendrix@chromium.org> | 2014-04-09 16:04:14 -0700 |
|---|---|---|
| committer | Marc Jones <marc.jones@se-eng.com> | 2014-12-15 20:17:25 +0100 |
| commit | 0c9cc5ee3be406901a52a8151408bb13253bf39b (patch) | |
| tree | 5f4c5e05f808f8f4c6b3596da32541782e221872 /src/soc/nvidia/tegra124/spi.c | |
| parent | 044656374780f844dd06487bfc654d8c8604b385 (diff) | |
tegra124: Release DMA channel at end of transaction
This adds a missing dma_release() at the end of DMA transfers. It
probably doesn't matter since we don't do many DMA transfers, though
I wouldn't want to hit some corner case with EFS and eventlog.
BUG=none
BRANCH=none
TEST=tested on nyan
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Change-Id: I79b30455babe75a13aac827caac88bf7053ec9e4
Original-Reviewed-on: https://chromium-review.googlesource.com/194479
Original-Tested-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-by: Gabe Black <gabeblack@chromium.org>
Original-Commit-Queue: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit dc7dc1d25bd88873b4c1198a6f3723d27c914ddc)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I8c5da4e104328fd8bce71942e6eda458a37bfe06
Reviewed-on: http://review.coreboot.org/7761
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/soc/nvidia/tegra124/spi.c')
| -rw-r--r-- | src/soc/nvidia/tegra124/spi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/soc/nvidia/tegra124/spi.c b/src/soc/nvidia/tegra124/spi.c index ea7b6ce1cb..8e090aab39 100644 --- a/src/soc/nvidia/tegra124/spi.c +++ b/src/soc/nvidia/tegra124/spi.c @@ -561,6 +561,7 @@ static int tegra_spi_dma_finish(struct tegra_spi_channel *spi) ; /* this shouldn't take long, no udelay */ dma_stop(spi->dma_in); clrbits_le32(&spi->regs->command1, SPI_CMD1_RX_EN); + dma_release(spi->dma_in); } if (spi->dma_out) { @@ -569,6 +570,7 @@ static int tegra_spi_dma_finish(struct tegra_spi_channel *spi) spi_delay(spi, todo - spi_byte_count(spi)); clrbits_le32(&spi->regs->command1, SPI_CMD1_TX_EN); dma_stop(spi->dma_out); + dma_release(spi->dma_out); } if (fifo_error(spi)) { |