diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0430-of-address-Follow-DMA-parent-for-dma-coherent.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0430-of-address-Follow-DMA-parent-for-dma-coherent.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0430-of-address-Follow-DMA-parent-for-dma-coherent.patch b/target/linux/bcm27xx/patches-5.4/950-0430-of-address-Follow-DMA-parent-for-dma-coherent.patch new file mode 100644 index 0000000000..76af58a126 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0430-of-address-Follow-DMA-parent-for-dma-coherent.patch @@ -0,0 +1,30 @@ +From e4a649779ff6857240fe691cdf147a3b4896e71b Mon Sep 17 00:00:00 2001 +From: Robin Murphy <robin.murphy@arm.com> +Date: Wed, 3 Jul 2019 14:47:31 +0100 +Subject: [PATCH] of: address: Follow DMA parent for "dma-coherent" + +commit c60bf3eb888a362100aa1bdbea351dab681e262a upstream. + +Much like for address translation, when checking for DMA coherence we +should be sure to walk up the DMA hierarchy, rather than the MMIO one, +now that we can accommodate them being different. + +Signed-off-by: Robin Murphy <robin.murphy@arm.com> +Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> +Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> +Signed-off-by: Rob Herring <robh@kernel.org> +--- + drivers/of/address.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/of/address.c ++++ b/drivers/of/address.c +@@ -1025,7 +1025,7 @@ bool of_dma_is_coherent(struct device_no + of_node_put(node); + return true; + } +- node = of_get_next_parent(node); ++ node = of_get_next_dma_parent(node); + } + of_node_put(node); + return false; |