[OpenBIOS] [PATCH 09/13] pci: don't set interrupt-map and interrupt-map-mask properties if empty
Mark Cave-Ayland
mark.cave-ayland at ilande.co.uk
Sat Jul 8 22:35:56 CEST 2017
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>
---
drivers/pci.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/pci.c b/drivers/pci.c
index e2ab0e1..e3b2181 100644
--- a/drivers/pci.c
+++ b/drivers/pci.c
@@ -1772,13 +1772,16 @@ static void ob_pci_bus_set_interrupt_map(phandle_t pcibus, phandle_t dnode,
fword("peer");
pci_childnode = POP();
}
- set_property(pcibus, "interrupt-map", (char *)props, ncells * sizeof(props[0]));
- props[0] = 0x00fff800;
- props[1] = 0x0;
- props[2] = 0x0;
- props[3] = 0x7;
- set_property(pcibus, "interrupt-map-mask", (char *)props, 4 * sizeof(props[0]));
+ if (ncells) {
+ set_property(pcibus, "interrupt-map", (char *)props, ncells * sizeof(props[0]));
+
+ props[0] = 0x00fff800;
+ props[1] = 0x0;
+ props[2] = 0x0;
+ props[3] = 0x7;
+ set_property(pcibus, "interrupt-map-mask", (char *)props, 4 * sizeof(props[0]));
+ }
}
int ob_pci_init(void)
--
1.7.10.4
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