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of: address: Store number of bus flag cells rather than bool

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[ 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>
This commit is contained in:
Rob Herring
2023-10-26 08:53:58 -05:00
committed by Greg Kroah-Hartman
parent 7eb954ec96
commit 007662f785
1 changed files with 5 additions and 9 deletions
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14
drivers/of/address.c
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@@ -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 */
@@ -753,7 +753,7 @@ 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;
@@ -763,10 +763,6 @@ 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)