When CONFIG_OF_ADDRESS=n, of_dma_set_restricted_buffer() returns -ENODEV and breaks the boot for sparc[64] machines. Return 0 instead, since the function is essentially a glorified NOP in this configuration.
Cc: Claire Chang <tien...@chromium.org> Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com> Reported-by: Guenter Roeck <li...@roeck-us.net> Suggested-by: Robin Murphy <robin.mur...@arm.com> Tested-by: Guenter Roeck <li...@roeck-us.net> Tested-by: Claire Chang <tien...@chromium.org> Reviewed-by: Christoph Hellwig <h...@lst.de> Link: https://lore.kernel.org/r/20210702030807.ga2685...@roeck-us.net Fixes: fec9b625095f ("of: Add plumbing for restricted DMA pool") Signed-off-by: Will Deacon <w...@kernel.org> --- drivers/of/of_private.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h index 376462798f7e..f557bd22b0cf 100644 --- a/drivers/of/of_private.h +++ b/drivers/of/of_private.h @@ -173,7 +173,8 @@ static inline int of_dma_get_range(struct device_node *np, static inline int of_dma_set_restricted_buffer(struct device *dev, struct device_node *np) { - return -ENODEV; + /* Do nothing, successfully. */ + return 0; } #endif -- 2.32.0.402.g57bb445576-goog _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
