[Intel-wired-lan] [PATCH net-next v3] iavf: Do not modify queue number when removing iavf driver

[Jagielski, Jedrzej]

>If VF has configured tc qdisc with number of queues less than original set and then the driver went in removing process, tc resources are also releasing. Attempt of modify real num tx/rx in this state is causing call trace, because kernel is trying to release uninitialized queues
>
>Fix it by not modifying the number of queues when removing a driver
>
>Call Trace:
>  net_rx_queue_update_kobjects+0x10c/0x160
>  netdev_unregister_kobject+0x4b/0x80
>  rollback_registered_many+0x27b/0x550
>  rollback_registered+0x56/0x90
>  unregister_netdevice_queue+0x73/0xb0
>  unregister_netdev+0x18/0x20
>  iavf_remove+0x421/0x440 [iavf]
>  pci_device_remove+0x3b/0xc0
>  device_release_driver_internal+0x18c/0x250
>  driver_detach+0x39/0x6d
>  bus_remove_driver+0x77/0xc9
>  pci_unregister_driver+0x2d/0xb0
>  iavf_exit_module+0xc/0xb9a [iavf]
>  __x64_sys_delete_module+0x139/0x270
>  do_syscall_64+0x5b/0x1b0
>  entry_SYSCALL_64_after_hwframe+0x65/0xca
> RIP: 0033:0x7f6e29645a8b
> Code: 73 01 c3 48 8b 0d fd 03 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f
>       1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01
>       f0 ff ff 73 01 c3 48 8b 0d cd 03 2c 00 f7 d8 64 89 01 48
> RSP: 002b:00007ffccf5b8098 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
> RAX: ffffffffffffffda RBX: 000055b5545f6c40 RCX: 00007f6e29645a8b
> RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055b5545f6ca8
> RBP: 000055b5545f6ca8 R08: 00007ffccf5b7041 R09: 0000000000000000
> R10: 00007f6e296b7f60 R11: 0000000000000206 R12: 0000000000000000
> R13: 0000000000000000 R14: 000055b5545f6ca8 R15: 00007ffccf5b9490
>
>Fixes: d5b33d024496 ("i40evf: add ndo_setup_tc callback to i40evf")
>Signed-off-by: Grzegorz Szczurek <grzegorzx.szczurek at intel.com>
>Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski at intel.com>
>---
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