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firmware: arm_ffa: Handle partitions setup failures

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Make ffa_setup_partitions() fail, cleanup and return an error when the Host
partition setup fails: in such a case ffa_init() itself will fail.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240108-ffa_fixes_6-8-v1-6-75bf7035bc50@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Cristian Marussi 2024-01-08 12:34:16 +00:00 committed by Sudeep Holla
parent ace760d9c0
commit 0c565d16b8
1 changed files with 23 additions and 5 deletions
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28
drivers/firmware/arm_ffa/driver.c
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@ -112,6 +112,7 @@ struct ffa_drv_info {
};
static struct ffa_drv_info *drv_info;
static void ffa_partitions_cleanup(void);
/*
* The driver must be able to support all the versions from the earliest
@ -1195,7 +1196,7 @@ void ffa_device_match_uuid(struct ffa_device *ffa_dev, const uuid_t *uuid)
kfree(pbuf);
}
static void ffa_setup_partitions(void)
static int ffa_setup_partitions(void)
{
int count, idx, ret;
uuid_t uuid;
@ -1206,7 +1207,7 @@ static void ffa_setup_partitions(void)
count = ffa_partition_probe(&uuid_null, &pbuf);
if (count <= 0) {
pr_info("%s: No partitions found, error %d\n", __func__, count);
return;
return -EINVAL;
}
xa_init(&drv_info->partition_info);
@ -1250,8 +1251,14 @@ static void ffa_setup_partitions(void)
/* Allocate for the host */
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return;
if (!info) {
pr_err("%s: failed to alloc Host partition ID 0x%x. Abort.\n",
__func__, drv_info->vm_id);
/* Already registered devices are freed on bus_exit */
ffa_partitions_cleanup();
return -ENOMEM;
}
rwlock_init(&info->rw_lock);
ret = xa_insert(&drv_info->partition_info, drv_info->vm_id,
info, GFP_KERNEL);
@ -1259,7 +1266,11 @@ static void ffa_setup_partitions(void)
pr_err("%s: failed to save Host partition ID 0x%x - ret:%d. Abort.\n",
__func__, drv_info->vm_id, ret);
kfree(info);
/* Already registered devices are freed on bus_exit */
ffa_partitions_cleanup();
}
return ret;
}
static void ffa_partitions_cleanup(void)
@ -1520,7 +1531,11 @@ static int __init ffa_init(void)
ffa_notifications_setup();
ffa_setup_partitions();
ret = ffa_setup_partitions();
if (ret) {
pr_err("failed to setup partitions\n");
goto cleanup_notifs;
}
ret = ffa_sched_recv_cb_update(drv_info->vm_id, ffa_self_notif_handle,
drv_info, true);
@ -1528,6 +1543,9 @@ static int __init ffa_init(void)
pr_info("Failed to register driver sched callback %d\n", ret);
return 0;
cleanup_notifs:
ffa_notifications_cleanup();
free_pages:
if (drv_info->tx_buffer)
free_pages_exact(drv_info->tx_buffer, RXTX_BUFFER_SIZE);