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commit 49f153abb13f411e1ba3b8345b9e0b86b44bfbf4 Author: Michal Lenc <[email protected]> AuthorDate: Mon Jul 3 12:42:06 2023 +0200 samv7/sam_xdmac.c: use sam_freelinklist only if circular buffer not used Circular buffer does not use DMA linked list therefore function sam_freelinklist() cannot be called as it would fail on assertion (csa not defined). Peripheral that calls DMA should care of buffer invalidation instead. Signed-off-by: Michal Lenc <[email protected]> --- arch/arm/src/samv7/sam_xdmac.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/arm/src/samv7/sam_xdmac.c b/arch/arm/src/samv7/sam_xdmac.c index 21b8b00704..1daa39cc6a 100644 --- a/arch/arm/src/samv7/sam_xdmac.c +++ b/arch/arm/src/samv7/sam_xdmac.c @@ -1427,9 +1427,14 @@ static void sam_dmaterminate(struct sam_xdmach_s *xdmach, int result) sam_putdmac(xdmac, chanbit, SAM_XDMAC_GD_OFFSET); while ((sam_getdmac(xdmac, SAM_XDMAC_GS_OFFSET) & chanbit) != 0); - /* Free the linklist */ + /* Free the linklist. Circular buffers do not use link list so any free + * operation should be handled in peripheral driver that calls DMA. + */ - sam_freelinklist(xdmach); + if (!xdmach->circular) + { + sam_freelinklist(xdmach); + } /* Perform the DMA complete callback */
