Commit b884e2de authored by John Garry's avatar John Garry Committed by Wei Xu
Browse files

lib: logic_pio: Add logic_pio_unregister_range()

Add a function to unregister a logical PIO range.

Logical PIO space can still be leaked when unregistering certain
LOGIC_PIO_CPU_MMIO regions, but this acceptable for now since there are no
callers to unregister LOGIC_PIO_CPU_MMIO regions, and the logical PIO
region allocation scheme would need significant work to improve this.

Signed-off-by: default avatarJohn Garry <>
Signed-off-by: default avatarWei Xu <>
parent 0a27142b
......@@ -117,6 +117,7 @@ struct logic_pio_hwaddr *find_io_range_by_fwnode(struct fwnode_handle *fwnode);
unsigned long logic_pio_trans_hwaddr(struct fwnode_handle *fwnode,
resource_size_t hw_addr, resource_size_t size);
int logic_pio_register_range(struct logic_pio_hwaddr *newrange);
void logic_pio_unregister_range(struct logic_pio_hwaddr *range);
resource_size_t logic_pio_to_hwaddr(unsigned long pio);
unsigned long logic_pio_trans_cpuaddr(resource_size_t hw_addr);
......@@ -98,6 +98,20 @@ int logic_pio_register_range(struct logic_pio_hwaddr *new_range)
return ret;
* logic_pio_unregister_range - unregister a logical PIO range for a host
* @range: pointer to the IO range which has been already registered.
* Unregister a previously-registered IO range node.
void logic_pio_unregister_range(struct logic_pio_hwaddr *range)
* find_io_range_by_fwnode - find logical PIO range for given FW node
* @fwnode: FW node handle associated with logical PIO range
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