linux/kernel/debug
Cengiz Can fcdb84cc5b kdb: remove unnecessary null check of dbg_io_ops
`kdb_msg_write` operates on a global `struct kgdb_io *` called
`dbg_io_ops`.

It's initialized in `debug_core.c` and checked throughout the debug
flow.

There's a null check in `kdb_msg_write` which triggers static analyzers
and gives the (almost entirely wrong) impression that it can be null.

Coverity scanner caught this as CID 1465042.

I have removed the unnecessary null check and eliminated false-positive
forward null dereference warning.

Signed-off-by: Cengiz Can <cengiz@kernel.wtf>
Link: https://lore.kernel.org/r/20200630082922.28672-1-cengiz@kernel.wtf
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
2020-09-08 14:34:40 +01:00
..
kdb kdb: remove unnecessary null check of dbg_io_ops 2020-09-08 14:34:40 +01:00
debug_core.c treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD() 2020-07-30 11:15:58 -07:00
debug_core.h kdb: Fix stack crawling on 'running' CPUs that aren't the master 2019-10-10 16:28:48 +01:00
gdbstub.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00