diff options
Diffstat (limited to 'drivers/memory/tegra/mc.c')
| -rw-r--r-- | drivers/memory/tegra/mc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c index 44064de962c2..a21163ccadc4 100644 --- a/drivers/memory/tegra/mc.c +++ b/drivers/memory/tegra/mc.c @@ -176,6 +176,13 @@ static int tegra_mc_hotreset_assert(struct reset_controller_dev *rcdev, if (!rst_ops) return -ENODEV; + /* DMA flushing will fail if reset is already asserted */ + if (rst_ops->reset_status) { + /* check whether reset is asserted */ + if (rst_ops->reset_status(mc, rst)) + return 0; + } + if (rst_ops->block_dma) { /* block clients DMA requests */ err = rst_ops->block_dma(mc, rst); |