firmware: arm_ffa: Add missing rwlock_init() for the driver partition

Add the missing rwlock initialization for the FF-A partition associated
the driver in ffa_setup_partitions(). It will the primary scheduler
partition in the host or the VM partition in the virtualised environment.
IOW, it corresponds to the partition with VM ID == drv_info->vm_id.

Fixes: 1b6bf41b7a65 ("firmware: arm_ffa: Add notification handling mechanism")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240108-ffa_fixes_6-8-v1-2-75bf7035bc50@arm.com
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 ed1d6a24934ecaab9faa887333ccb96e17779165..8df92c9521f43fe2b715e1ae762414d6a09008bf 100644 (file)
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -1237,6 +1237,7 @@ static void ffa_setup_partitions(void)
        info = kzalloc(sizeof(*info), GFP_KERNEL);
        if (!info)
                return;
+       rwlock_init(&info->rw_lock);
        xa_store(&drv_info->partition_info, drv_info->vm_id, info, GFP_KERNEL);
        drv_info->partition_count++;
 }