firmware: arm_ffa: Fix the partition ID check in ffa_notification_info_get()

FFA_NOTIFICATION_INFO_GET retrieves information about pending
notifications. Notifications can be either global or per VCPU. Global
notifications are reported with the partition ID only in the list of
endpoints with pending notifications. ffa_notification_info_get()
incorrectly expect no ID at all for global notifications. Fix this by
checking for ID = 1 instead of ID = 0.

Fixes: 3522be48d82b ("firmware: arm_ffa: Implement the NOTIFICATION_INFO_GET interface")
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Link: https://lore.kernel.org/r/20240311110700.2367142-1-jens.wiklander@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index f2556a8e940156bc4f9d34ae5dc92aac837b688a..9bc2e10381afd9cc6f97d6dd50510c8daa092b5b 100644 (file)
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -790,7 +790,7 @@ static void ffa_notification_info_get(void)
 
                        part_id = packed_id_list[ids_processed++];
 
-                       if (!ids_count[list]) { /* Global Notification */
+                       if (ids_count[list] == 1) { /* Global Notification */
                                __do_sched_recv_cb(part_id, 0, false);
                                continue;
                        }