From: Christoph Müllner christoph.muellner@theobroma-systems.com
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 Signed-off-by: Christoph Muellner christoph.muellner@theobroma-systems.com ---
Changes in v2: None
common/bouncebuf.c | 6 ++++++ 1 file changed, 6 insertions(+)
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; }