[PATCH v2 1/5] of: address: Fix default coherency for MIPS
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STALE1314d
SUPERSEDED
From: Jiaxun Yang <jiaxun.yang@flygoat.com>
Date: 2023-02-23 11:37:07
Also in:
linux-mips, linux-riscv, lkml
Subsystem:
open firmware and flattened device tree, the rest · Maintainers:
Rob Herring, Saravana Kannan, Linus Torvalds
Revision v2 of 4 in this series.
Revisions (4)
- v1 [diff vs current]
- v2 current
- v3 [diff vs current]
- v4 [diff vs current]
DT-based MIPS doesn't use OF_DMA_DEFAULT_COHERENT, but might override the system-wide default at runtime. Use dma_default_coherent to override default coherence for MIPS. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> --- drivers/of/address.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/of/address.c b/drivers/of/address.c
index 4c0b169ef9bf..c105d66a1fa4 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c@@ -1105,6 +1105,14 @@ bool of_dma_is_coherent(struct device_node *np) struct device_node *node; bool is_coherent = IS_ENABLED(CONFIG_OF_DMA_DEFAULT_COHERENT); + /* + * DT-based MIPS doesn't use OF_DMA_DEFAULT_COHERENT, but + * might override the system-wide default at runtime. + */ +#if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT) + is_coherent = dma_default_coherent; +#endif + node = of_node_get(np); while (node) {
--
2.37.1 (Apple Git-137.1)