ALSA: control: Use automatic cleanup of kfree()

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There are common patterns where a temporary buffer is allocated and
freed at the exit, and those can be simplified with the recent cleanup
mechanism via __free(kfree).

A caveat is that some allocations are memdup_user() and they return an
error pointer instead of NULL.  Those need special cares and the value
has to be cleared with no_free_ptr() at the allocation error path.

Other than that, the conversions are straightforward.

No functional changes, only code refactoring.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20240222111509.28390-3-tiwai@suse.de

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This commit is contained in:

Takashi Iwai 2024-02-22 12:15:02 +01:00

parent ae92139848

commit 1052d98822

2 changed files with 34 additions and 58 deletions

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23

sound/core/control.c

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69

sound/core/control_compat.c

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