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firmware: arm_ffa: Handle the presence of host partition in the partition info

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Currently it is assumed that the firmware doesn't present the host
partition in the list of partitions presented as part of the response
to PARTITION_INFO_GET from the firmware. However, there are few
platforms that prefer to present the same in the list of partitions.
It is not manadatory but not restricted as well.

So handle the same by making sure to check the presence of the host
VM ID in the XArray partition information maintained/managed in the
driver before attempting to add it.

Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Message-Id: <20250217-ffa_updates-v3-7-bd1d9de615e7@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla 2025-02-17 15:38:48 +00:00
parent 3c3d676746
commit 2f622a8b07
1 changed files with 4 additions and 0 deletions
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4
drivers/firmware/arm_ffa/driver.c
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@ -1488,6 +1488,10 @@ static int ffa_setup_partitions(void)
kfree(pbuf);
/* Check if the host is already added as part of partition info */
if (xa_load(&drv_info->partition_info, drv_info->vm_id))
return 0;
/* Allocate for the host */
ret = ffa_xa_add_partition_info(drv_info->vm_id);
if (ret) {