[PATCH 5.18 598/879] firmware: arm_ffa: Fix uuid parameter to ffa_partition_probe

Greg Kroah-Hartman
2022-06-08T01:42:04Z

From: Sudeep Holla <sudeep.holla@arm.com>

[ Upstream commit f3c45c045e25ed52461829d2ce07954f72b6ad15 ]

While we pass uuid_null intentionally to ffa_partition_probe in
ffa_setup_partitions to get the count of the partitions, it must not be
uuid_null in ffa_partition_info_get which is used by the ffa_drivers
to fetch the specific partition info passing the UUID of the partition.

Fix ffa_partition_info_get by passing the received uuid down to
ffa_partition_probe so that the correct partition information is fetched.

Link: https://lore.kernel.org/r/20220429113946.2087145-1-sudeep.holla@arm.com
Fixes: d0c0bce83122 ("firmware: arm_ffa: Setup in-kernel users of FFA partitions")
Reported-by: Arunachalam Ganapathy <arunachalam.ganapathy@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/firmware/arm_ffa/driver.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index 14f900047ac0..8fa1785afd42 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -582,7 +582,7 @@ static int ffa_partition_info_get(const char *uuid_str,
return -ENODEV;
}

- count = ffa_partition_probe(&uuid_null, &pbuf);
+ count = ffa_partition_probe(&uuid, &pbuf);
if (count <= 0)
return -ENOENT;

--
2.35.1