diff options
| author | Christoph Müllner <christoph.muellner@theobroma-systems.com> | 2019-05-04 16:26:43 +0200 |
|---|---|---|
| committer | Christoph Müllner <christoph.muellner@theobroma-systems.com> | 2019-05-07 17:30:46 +0200 |
| commit | d68222d45b4e7f55f500f5e28722cb4304ecde96 (patch) | |
| tree | 0aae80107e7cf17ba06f2d99cabbde9870c8f10d | |
| parent | 2d9f20412d8c78493c41d633d336d830aa98c744 (diff) | |
bouncebuf: Add DMA validation check to addr_aligned().
Currently addr_aligned() performs an alignment and a length check
to validate the DMA address. However, some machines have stricter
restrictions of DMA-able addresses.
This patch adds a call to mach_addr_is_dmaable() to honor this
machine specific restrictions.
Signed-off-by: Christoph Müllner <christoph.muellner@theobroma-systems.com>
| -rw-r--r-- | common/bouncebuf.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/common/bouncebuf.c b/common/bouncebuf.c index a7098e2caf..1b82243b06 100644 --- a/common/bouncebuf.c +++ b/common/bouncebuf.c @@ -26,6 +26,12 @@ static int addr_aligned(struct bounce_buffer *state) return 0; } + /* Check if valid DMA address. */ + if (!mach_addr_is_dmaable(state->user_buffer)) { + debug("Buffer address is not DMA-able\n"); + return 0; + } + /* Aligned */ return 1; } |