diff options
| author | Will Deacon <will@kernel.org> | 2021-07-20 14:38:23 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad@kernel.org> | 2021-07-23 20:13:07 -0400 |
| commit | 85044eb08d0a37b1b6bcb3504bfd660a85ba5b7b (patch) | |
| tree | 41e7369b712f770f5bf9d97dd47ccc205198bcc4 | |
| parent | 868c9ddc182bc6728bb380cbfb3170734f72c599 (diff) | |
| download | lwn-85044eb08d0a37b1b6bcb3504bfd660a85ba5b7b.tar.gz lwn-85044eb08d0a37b1b6bcb3504bfd660a85ba5b7b.zip | |
of: Return success from of_dma_set_restricted_buffer() when !OF_ADDRESS
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 <tientzu@chromium.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Claire Chang <tientzu@chromium.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210702030807.GA2685166@roeck-us.net
Fixes: fec9b625095f ("of: Add plumbing for restricted DMA pool")
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>
| -rw-r--r-- | drivers/of/of_private.h | 3 |
1 files changed, 2 insertions, 1 deletions
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 |