5.15-stable review patch. If anyone has any objections, please let me know.
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From: Rob Herring robh@kernel.org
[ Upstream commit 88696db08b7efa3b6bb722014ea7429e78f6be32 ]
It is more useful to know how many flags cells a bus has rather than whether a bus has flags or not as ultimately the number of cells is the information used. Replace 'has_flags' boolean with 'flag_cells' count.
Acked-by: Herve Codina herve.codina@bootlin.com Link: https://lore.kernel.org/r/20231026135358.3564307-2-robh@kernel.org Signed-off-by: Rob Herring robh@kernel.org Stable-dep-of: 7f05e20b989a ("of: address: Preserve the flags portion on 1:1 dma-ranges mapping") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/of/address.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-)
diff --git a/drivers/of/address.c b/drivers/of/address.c index b8e015af59df..123a75a19bc1 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -50,7 +50,7 @@ struct of_bus { u64 (*map)(__be32 *addr, const __be32 *range, int na, int ns, int pna); int (*translate)(__be32 *addr, u64 offset, int na); - bool has_flags; + int flag_cells; unsigned int (*get_flags)(const __be32 *addr); };
@@ -361,7 +361,7 @@ static struct of_bus of_busses[] = { .count_cells = of_bus_pci_count_cells, .map = of_bus_pci_map, .translate = of_bus_default_flags_translate, - .has_flags = true, + .flag_cells = 1, .get_flags = of_bus_pci_get_flags, }, #endif /* CONFIG_PCI */ @@ -373,7 +373,7 @@ static struct of_bus of_busses[] = { .count_cells = of_bus_isa_count_cells, .map = of_bus_isa_map, .translate = of_bus_default_flags_translate, - .has_flags = true, + .flag_cells = 1, .get_flags = of_bus_isa_get_flags, }, /* Default with flags cell */ @@ -384,7 +384,7 @@ static struct of_bus of_busses[] = { .count_cells = of_bus_default_count_cells, .map = of_bus_default_flags_map, .translate = of_bus_default_flags_translate, - .has_flags = true, + .flag_cells = 1, .get_flags = of_bus_default_flags_get_flags, }, /* Default */ @@ -751,7 +751,7 @@ struct of_pci_range *of_pci_range_parser_one(struct of_pci_range_parser *parser, int na = parser->na; int ns = parser->ns; int np = parser->pna + na + ns; - int busflag_na = 0; + int busflag_na = parser->bus->flag_cells;
if (!range) return NULL; @@ -761,10 +761,6 @@ struct of_pci_range *of_pci_range_parser_one(struct of_pci_range_parser *parser,
range->flags = parser->bus->get_flags(parser->range);
- /* A extra cell for resource flags */ - if (parser->bus->has_flags) - busflag_na = 1; - range->bus_addr = of_read_number(parser->range + busflag_na, na - busflag_na);
if (parser->dma)