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

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BugLink: https://bugs.launchpad.net/bugs/2065912

[ Upstream commit 1a4bd2b128fb5ca62e4d1c5ca298d3d06b9c1e8e ]

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: 3522be48d8 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Jens Wiklander
2024-03-11 12:07:00 +01:00
committed by Stefan Bader
parent 7582369c96
commit a1eae29757
1 changed files with 1 additions and 1 deletions
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drivers/firmware/arm_ffa/driver.c
+1 -1
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@@ -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;
}