@@ -220,7 +220,6 @@ static void ipu_bridge_create_connection_swnodes(struct ipu_bridge *bridge,
struct ipu_sensor *sensor)
{
struct software_node *nodes = sensor->swnodes;
- char vcm_name[ACPI_ID_LEN + 4];
ipu_bridge_init_swnode_names(sensor);
@@ -240,10 +239,10 @@ static void ipu_bridge_create_connection_swnodes(struct ipu_bridge *bridge,
sensor->ipu_properties);
if (sensor->ssdb.vcmtype) {
/* append ssdb.link to distinguish VCM nodes with same HID */
- snprintf(vcm_name, sizeof(vcm_name), "%s-%u",
- ipu_vcm_types[sensor->ssdb.vcmtype - 1],
+ snprintf(sensor->node_names.vcm, sizeof(sensor->node_names.vcm),
+ "%s-%u", ipu_vcm_types[sensor->ssdb.vcmtype - 1],
sensor->ssdb.link);
- nodes[SWNODE_VCM] = NODE_VCM(vcm_name);
+ nodes[SWNODE_VCM] = NODE_VCM(sensor->node_names.vcm);
}
ipu_bridge_init_swnode_group(sensor);
@@ -103,6 +103,7 @@ struct ipu_node_names {
char port[7];
char endpoint[11];
char remote_port[7];
+ char vcm[16];
};
struct ipu_sensor_config {
Commit 567f97bd381f ("media: ipu3-cio2: support multiple sensors and VCMs with same HID") introduced an on stack vcm_name and then uses this for the name field of the software_node struct used for the vcm. But the software_node struct is much longer lived then the current stack-frame, so this is no good. Instead extend the ipu_node_names struct with an extra field to store the vcm software_node name and use that. Note this also changes the length of the allocated buffer from ACPI_ID_LEN + 4 to 16. the name is filled with "<ipu_vcm_types[x]>-%u" where ipu_vcm_types[x] is not an ACPI_ID. The maximum length of the strings in the ipu_vcm_types[] array is 11 + 5 bytes for "-255\0" means 16 bytes are needed in the worst case scenario. Fixes: 567f97bd381f ("media: ipu3-cio2: support multiple sensors and VCMs with same HID") Cc: Bingbu Cao <bingbu.cao@intel.com> Reviewed-by: Andy Shevchenko <andy@kernel.org> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- drivers/media/pci/intel/ipu-bridge.c | 7 +++---- drivers/media/pci/intel/ipu-bridge.h | 1 + 2 files changed, 4 insertions(+), 4 deletions(-)