linux-kernel - [PATCH v1] ALSA:ac97: Remove redundant driver match function

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Date:   Sun, 19 Mar 2023 12:47:33 +0800
From:   Lizhe <sensor1010@....com>
To:     perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org
Cc:     linux-kernel@...r.kernel.org, Lizhe <sensor1010@....com>
Subject: [PATCH v1] ALSA:ac97: Remove redundant driver match function

If there is no driver match function, the driver core assumes that each
candidate pair (driver, device) matches, see driver_match_device()

Drop the bus's match function that always returned 1 and so
implements the same behaviour as when there is no match function.

Signed-off-by: Lizhe <sensor1010@....com>
---
 sound/ac97_bus.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/sound/ac97_bus.c b/sound/ac97_bus.c
index b4685c53ff11..c7aee8c42c55 100644
--- a/sound/ac97_bus.c
+++ b/sound/ac97_bus.c
@@ -75,19 +75,8 @@ int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
 }
 EXPORT_SYMBOL_GPL(snd_ac97_reset);
 
-/*
- * Let drivers decide whether they want to support given codec from their
- * probe method. Drivers have direct access to the struct snd_ac97
- * structure and may  decide based on the id field amongst other things.
- */
-static int ac97_bus_match(struct device *dev, struct device_driver *drv)
-{
-	return 1;
-}
-
 struct bus_type ac97_bus_type = {
 	.name		= "ac97",
-	.match		= ac97_bus_match,
 };
 
 static int __init ac97_bus_init(void)
-- 
2.34.1