[PATCH v1] Bluetooth: btmtk: Fix kernel crash when entering btmtk_usb_suspend

[patchwork-bot+bluetooth at kernel.org]

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz at intel.com>:

On Tue, 16 Jul 2024 15:49:47 +0800 you wrote:
> If MediaTek's Bluetooth setup is unsuccessful, a NULL pointer issue
> occur when the system is suspended and the anchored kill function
> is called. To avoid this, add protection to prevent executing the
> anchored kill function if the setup is unsuccessful.
> 
> [    6.922106] Hardware name: Acer Tomato (rev2) board (DT)
> [    6.922114] Workqueue: pm pm_runtime_work
> [    6.922132] pstate: 804000c9
> (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [    6.922147] pc : usb_kill_anchored_urbs+0x6c/0x1e0
> [    6.922164] lr : usb_kill_anchored_urbs+0x48/0x1e0
> [    6.922181] sp : ffff800080903b60
> [    6.922187] x29: ffff800080903b60
> x28: ffff2c7b85c32b80 x27: ffff2c7bbb370930
> [    6.922211] x26: 00000000000f4240
> x25: 00000000ffffffff x24: ffffd49ece2dcb48
> [    6.922255] x20: ffffffffffffffd8
> x19: 0000000000000000 x18: 0000000000000006
> [    6.922276] x17: 6531656337386238
> x16: 3632373862333863 x15: ffff800080903480
> [    6.922297] x14: 0000000000000000
> x13: 303278302f303178 x12: ffffd49ecf090e30
> [    6.922318] x11: 0000000000000001
> x10: 0000000000000001 x9 : ffffd49ecd2c5bb4
> [    6.922339] x8 : c0000000ffffdfff
> x7 : ffffd49ecefe0db8 x6 : 00000000000affa8
> [    6.922360] x5 : ffff2c7bbb35dd48
> x4 : 0000000000000000 x3 : 0000000000000000
> [    6.922379] x2 : 0000000000000000
> x1 : 0000000000000003 x0 : ffffffffffffffd8
> [    6.922400] Call trace:
> [    6.922405]  usb_kill_anchored_urbs+0x6c/0x1e0
> [    6.922422]  btmtk_usb_suspend+0x20/0x38
> [btmtk 5f200a97badbdfda4266773fee49acfc8e0224d5]
> [    6.922444]  btusb_suspend+0xd0/0x210
> [btusb 0bfbf19a87ff406c83b87268b87ce1e80e9a829b]
> [    6.922469]  usb_suspend_both+0x90/0x288
> [    6.922487]  usb_runtime_suspend+0x3c/0xa8
> [    6.922507]  __rpm_callback+0x50/0x1f0
> [    6.922523]  rpm_callback+0x70/0x88
> [    6.922538]  rpm_suspend+0xe4/0x5a0
> [    6.922553]  pm_runtime_work+0xd4/0xe0
> [    6.922569]  process_one_work+0x18c/0x440
> [    6.922588]  worker_thread+0x314/0x428
> [    6.922606]  kthread+0x128/0x138
> [    6.922621]  ret_from_fork+0x10/0x20
> [    6.922644] Code: f100a274 54000520 d503201f d100a260 (b8370000)
> [    6.922654] ---[ end trace 0000000000000000 ]---
> 
> [...]

Here is the summary with links:
  - [v1] Bluetooth: btmtk: Fix kernel crash when entering btmtk_usb_suspend
    https://git.kernel.org/bluetooth/bluetooth-next/c/0c9b6e2f7742

You are awesome, thank you!
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