linux_dsm_epyc7002/sound/soc/intel/atom
Julia Lawall a383308e50
ASoC: Intel: drop unnecessary list_empty
list_for_each_entry_safe is able to handle an empty list.
The only effect of avoiding the loop is not initializing the
index variable.
Drop list_empty tests in cases where these variables are not
used.

Note that list_for_each_entry_safe is defined in terms of
list_first_entry, which indicates that it should not be used on an
empty list.  But in list_for_each_entry_safe, the element obtained by
list_first_entry is not really accessed, only the address of its
list_head field is compared to the address of the list head, so the
list_first_entry is safe.

The semantic patch that makes this change is as follows (with another
variant for the no brace case): (http://coccinelle.lip6.fr/)

<smpl>
@@
expression x,e;
iterator name list_for_each_entry_safe;
statement S;
identifier i,j;
@@
-if (!(list_empty(x))) {
   list_for_each_entry_safe(i,j,x,...) S
- }
 ... when != i
     when != j
(
  i = e;
|
? j = e;
)
</smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/1595761112-11003-2-git-send-email-Julia.Lawall@inria.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-30 22:38:39 +01:00
..
sst ASoC: Intel: drop unnecessary list_empty 2020-07-30 22:38:39 +01:00
Makefile ASoC: SOF/Intel: clarify SPDX license with GPL-2.0-only 2020-05-01 17:45:24 +01:00
sst-atom-controls.c ASoC: Intel: atom: fix 'defined but not used' warning 2020-07-01 20:58:30 +01:00
sst-atom-controls.h ASoC: Intel: Skylake: Replace zero-length array with flexible-array 2020-05-12 17:14:33 +01:00
sst-mfld-dsp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
sst-mfld-platform-compress.c ASoC: intel: atom: use snd_compress_ops 2020-04-21 19:01:58 +01:00
sst-mfld-platform-pcm.c ASoC: intel: use asoc_substream_to_rtd() 2020-07-27 14:00:23 +01:00
sst-mfld-platform.h ASoC: intel: atom: use snd_compress_ops 2020-04-21 19:01:58 +01:00