From: Christoph Müllner <christoph.muell...@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.muell...@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muell...@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;
}
--
2.11.0
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