diff options
| author | Sudeep Holla <sudeep.holla@arm.com> | 2023-10-03 11:59:32 +0300 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2023-10-06 17:32:33 +0300 |
| commit | 7d0bc6360f17ea323ab25939a34857123d7d87e5 (patch) | |
| tree | c15d5b811653d6b66fc2148387d86ca10d2dfb54 /drivers/firmware/arm_ffa/bus.c | |
| parent | 9dda1178479aa0a73fe0eaabfe2d9a1c603cfeed (diff) | |
| download | linux-7d0bc6360f17ea323ab25939a34857123d7d87e5.tar.xz | |
firmware: arm_ffa: Assign the missing IDR allocation ID to the FFA device
Commit 19b8766459c4 ("firmware: arm_ffa: Fix FFA device names for logical
partitions") added an ID to the FFA device using ida_alloc() and append
the same to "arm-ffa" to make up a unique device name. However it missed
to stash the id value in ffa_dev to help freeing the ID later when the
device is destroyed.
Due to the missing/unassigned ID in FFA device, we get the following
warning when the FF-A device is unregistered.
| ida_free called for id=0 which is not allocated.
| WARNING: CPU: 7 PID: 1 at lib/idr.c:525 ida_free+0x114/0x164
| CPU: 7 PID: 1 Comm: swapper/0 Not tainted 6.6.0-rc4 #209
| pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
| pc : ida_free+0x114/0x164
| lr : ida_free+0x114/0x164
| Call trace:
| ida_free+0x114/0x164
| ffa_release_device+0x24/0x3c
| device_release+0x34/0x8c
| kobject_put+0x94/0xf8
| put_device+0x18/0x24
| klist_devices_put+0x14/0x20
| klist_next+0xc8/0x114
| bus_for_each_dev+0xd8/0x144
| arm_ffa_bus_exit+0x30/0x54
| ffa_init+0x68/0x330
| do_one_initcall+0xdc/0x250
| do_initcall_level+0x8c/0xac
| do_initcalls+0x54/0x94
| do_basic_setup+0x1c/0x28
| kernel_init_freeable+0x104/0x170
| kernel_init+0x20/0x1a0
| ret_from_fork+0x10/0x20
Fix the same by actually assigning the ID in the FFA device this time
for real.
Fixes: 19b8766459c4 ("firmware: arm_ffa: Fix FFA device names for logical partitions")
Link: https://lore.kernel.org/r/20231003085932.3553985-1-sudeep.holla@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'drivers/firmware/arm_ffa/bus.c')
| -rw-r--r-- | drivers/firmware/arm_ffa/bus.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/firmware/arm_ffa/bus.c b/drivers/firmware/arm_ffa/bus.c index 2b8bfcd010f5..7865438b3696 100644 --- a/drivers/firmware/arm_ffa/bus.c +++ b/drivers/firmware/arm_ffa/bus.c @@ -193,6 +193,7 @@ struct ffa_device *ffa_device_register(const uuid_t *uuid, int vm_id, dev->release = ffa_release_device; dev_set_name(&ffa_dev->dev, "arm-ffa-%d", id); + ffa_dev->id = id; ffa_dev->vm_id = vm_id; ffa_dev->ops = ops; uuid_copy(&ffa_dev->uuid, uuid); |