[LTP] [PATCH 1/2] tpci: fix NULL pointer dereference on wrong test invocation

[Petr Vorel]

Hi Krzysztof,

> On 18/06/2021 15:05, Krzysztof Kozlowski wrote:
> > Fix NULL pointer dereference when a ltp_tpci test case is started before
> > choosing the device:

> >     ltp_tpci: test-case 12
> >     ltp_tpci: assign resources
> >     ltp_tpci: assign resource #0
> >     BUG: kernel NULL pointer dereference, address: 00000000000003b8
> >     ...
> >      Call Trace:
> >       dev_attr_store+0x17/0x30
> >       sysfs_kf_write+0x3e/0x50
> >       kernfs_fop_write_iter+0x13c/0x1d0
> >       new_sync_write+0x113/0x1a0
> >       vfs_write+0x1c5/0x200
> >       ksys_write+0x67/0xe0
> >       __x64_sys_write+0x1a/0x20
> >       do_syscall_64+0x49/0xc0
> >       entry_SYSCALL_64_after_hwframe+0x44/0xa9

Merged this one, thanks!

Kind regards,
Petr