diff options
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index cae53937feeb..fcfc96f8e0de 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -182,6 +182,14 @@ static struct its_collection *dev_event_to_col(struct its_device *its_dev, return its->collections + its_dev->event_map.col_map[event]; } +static struct its_collection *valid_col(struct its_collection *col) +{ + if (WARN_ON_ONCE(col->target_address & GENMASK_ULL(0, 15))) + return NULL; + + return col; +} + /* * ITS command descriptors - parameters to be encoded in a command * block. @@ -439,7 +447,7 @@ static struct its_collection *its_build_mapti_cmd(struct its_node *its, its_fixup_cmd(cmd); - return col; + return valid_col(col); } static struct its_collection *its_build_movi_cmd(struct its_node *its, @@ -458,7 +466,7 @@ static struct its_collection *its_build_movi_cmd(struct its_node *its, its_fixup_cmd(cmd); - return col; + return valid_col(col); } static struct its_collection *its_build_discard_cmd(struct its_node *its, @@ -476,7 +484,7 @@ static struct its_collection *its_build_discard_cmd(struct its_node *its, its_fixup_cmd(cmd); - return col; + return valid_col(col); } static struct its_collection *its_build_inv_cmd(struct its_node *its, @@ -494,7 +502,7 @@ static struct its_collection *its_build_inv_cmd(struct its_node *its, its_fixup_cmd(cmd); - return col; + return valid_col(col); } static struct its_collection *its_build_int_cmd(struct its_node *its, @@ -512,7 +520,7 @@ static struct its_collection *its_build_int_cmd(struct its_node *its, its_fixup_cmd(cmd); - return col; + return valid_col(col); } static struct its_collection *its_build_clear_cmd(struct its_node *its, @@ -530,7 +538,7 @@ static struct its_collection *its_build_clear_cmd(struct its_node *its, its_fixup_cmd(cmd); - return col; + return valid_col(col); } static struct its_collection *its_build_invall_cmd(struct its_node *its, @@ -1824,11 +1832,16 @@ static int its_alloc_tables(struct its_node *its) static int its_alloc_collections(struct its_node *its) { + int i; + its->collections = kcalloc(nr_cpu_ids, sizeof(*its->collections), GFP_KERNEL); if (!its->collections) return -ENOMEM; + for (i = 0; i < nr_cpu_ids; i++) + its->collections[i].target_address = ~0ULL; + return 0; } |