diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-08 21:17:20 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-08 21:17:20 -0300 |
| commit | eccbe858ce6412b96fc7cb32eb23a3592f64e5f6 (patch) | |
| tree | ed4f0e52d266bffc68a5b68afcfe69882b917efb /drivers/of | |
| parent | 0c1ac6822620b9868cfad5b4c2c223c6cd6fbfd8 (diff) | |
Linux-libre 4.4.4-gnupck-4.4.4-gnu
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/irq.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 4fa916dff..72a2c1969 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -636,6 +636,13 @@ static u32 __of_msi_map_rid(struct device *dev, struct device_node **np, msi_base = be32_to_cpup(msi_map + 2); rid_len = be32_to_cpup(msi_map + 3); + if (rid_base & ~map_mask) { + dev_err(parent_dev, + "Invalid msi-map translation - msi-map-mask (0x%x) ignores rid-base (0x%x)\n", + map_mask, rid_base); + return rid_out; + } + msi_controller_node = of_find_node_by_phandle(phandle); matched = (masked_rid >= rid_base && @@ -655,7 +662,7 @@ static u32 __of_msi_map_rid(struct device *dev, struct device_node **np, if (!matched) return rid_out; - rid_out = masked_rid + msi_base; + rid_out = masked_rid - rid_base + msi_base; dev_dbg(dev, "msi-map at: %s, using mask %08x, rid-base: %08x, msi-base: %08x, length: %08x, rid: %08x -> %08x\n", dev_name(parent_dev), map_mask, rid_base, msi_base, |