[PATCH 1/1] of/pci: Add IORESOURCE_MEM_64 to resource flags for 64-bit memory addresses

Leonardo Bras
2021-04-15T18:01:44Z

Many other resource flag parsers already add this flag when the input
has bits 24 & 25 set, so update this one to do the same.

Some devices (like virtio-net) have more than one memory resource
(like MMIO32 and MMIO64) and without this flag it would be needed to
verify the address range to know which one is which.

Signed-off-by: Leonardo Bras <leobras.c@gmail.com>
---
drivers/of/address.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/of/address.c b/drivers/of/address.c
index 73ddf2540f3f..dc7147843783 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -116,9 +116,12 @@ static unsigned int of_bus_pci_get_flags(const __be32 *addr)
flags |= IORESOURCE_IO;
break;
case 0x02: /* 32 bits */
- case 0x03: /* 64 bits */
flags |= IORESOURCE_MEM;
break;
+
+ case 0x03: /* 64 bits */
+ flags |= IORESOURCE_MEM | IORESOURCE_MEM_64;
+ break;
}
if (w & 0x40000000)
flags |= IORESOURCE_PREFETCH;
--
2.30.2