Re: [PATCH] of: address: Fix parser address/size cells initialization
On Fri, Jul 31, 2020 at 12:02:48PM +0200, Nicolas Saenz Julienne wrote:
> bus->count_cells() parses cells starting from the node's parent. This is
> not good enough for parser_init() which is generally parsing a bus node.
>
> Revert to previous behavior using of_bus_n_*_cells().
>
> Fixes: 2f96593ecc37 ("of_address: Add bus type match for pci ranges parser")
> Reported-by: Nathan Chancellor
> Signed-off-by: Nicolas Saenz Julienne
> ---
> drivers/of/address.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
applied to mips-next.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.[ RFC1925, 2.3 ]
Re: [PATCH] of: address: Fix parser address/size cells initialization
On Fri, Jul 31, 2020 at 4:02 AM Nicolas Saenz Julienne
wrote:
>
> bus->count_cells() parses cells starting from the node's parent. This is
> not good enough for parser_init() which is generally parsing a bus node.
>
> Revert to previous behavior using of_bus_n_*_cells().
>
> Fixes: 2f96593ecc37 ("of_address: Add bus type match for pci ranges parser")
> Reported-by: Nathan Chancellor
> Signed-off-by: Nicolas Saenz Julienne
> ---
> drivers/of/address.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
We have a unit test for this code, does it fail? If not, adjusting it
to fail or adding a test case would be nice. Either way:
Acked-by: Rob Herring
[PATCH] of: address: Fix parser address/size cells initialization
bus->count_cells() parses cells starting from the node's parent. This is
not good enough for parser_init() which is generally parsing a bus node.
Revert to previous behavior using of_bus_n_*_cells().
Fixes: 2f96593ecc37 ("of_address: Add bus type match for pci ranges parser")
Reported-by: Nathan Chancellor
Signed-off-by: Nicolas Saenz Julienne
---
drivers/of/address.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/of/address.c b/drivers/of/address.c
index 275d764efc77..89822e191956 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -701,11 +701,11 @@ static int parser_init(struct of_pci_range_parser *parser,
parser->node = node;
parser->pna = of_n_addr_cells(node);
+ parser->na = of_bus_n_addr_cells(node);
+ parser->ns = of_bus_n_size_cells(node);
parser->dma = !strcmp(name, "dma-ranges");
parser->bus = of_match_bus(node);
- parser->bus->count_cells(parser->node, >na, >ns);
-
parser->range = of_get_property(node, name, );
if (parser->range == NULL)
return -ENOENT;
--
2.27.0
