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From: Takashi Iwai <tiwai@suse.de>
To: alsa-devel@alsa-project.org
Subject: [alsa-devel] [PATCH 03/58] ALSA: core: Treat snd_device_ops as const
Date: Fri,  3 Jan 2020 09:16:19 +0100
Message-ID: <20200103081714.9560-4-tiwai@suse.de> (raw)
In-Reply-To: <20200103081714.9560-1-tiwai@suse.de>

This is a preliminary patch to allow const for snd_device_ops
definitions in each driver's code.  The ops reference is read-only,
hence it can be declared as const for further optimization.

There should be no functional changes by this patch.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 include/sound/core.h | 4 ++--
 sound/core/device.c  | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/sound/core.h b/include/sound/core.h
index af3dce956c17..0e14b7a3e67b 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -69,7 +69,7 @@ struct snd_device {
 	enum snd_device_state state;	/* state of the device */
 	enum snd_device_type type;	/* device type */
 	void *device_data;		/* device structure */
-	struct snd_device_ops *ops;	/* operations */
+	const struct snd_device_ops *ops;	/* operations */
 };
 
 #define snd_device(n) list_entry(n, struct snd_device, list)
@@ -256,7 +256,7 @@ static inline void snd_card_unref(struct snd_card *card)
 /* device.c */
 
 int snd_device_new(struct snd_card *card, enum snd_device_type type,
-		   void *device_data, struct snd_device_ops *ops);
+		   void *device_data, const struct snd_device_ops *ops);
 int snd_device_register(struct snd_card *card, void *device_data);
 int snd_device_register_all(struct snd_card *card);
 void snd_device_disconnect(struct snd_card *card, void *device_data);
diff --git a/sound/core/device.c b/sound/core/device.c
index 708b91944de3..cdc5af526739 100644
--- a/sound/core/device.c
+++ b/sound/core/device.c
@@ -27,7 +27,7 @@
  * Return: Zero if successful, or a negative error code on failure.
  */
 int snd_device_new(struct snd_card *card, enum snd_device_type type,
-		   void *device_data, struct snd_device_ops *ops)
+		   void *device_data, const struct snd_device_ops *ops)
 {
 	struct snd_device *dev;
 	struct list_head *p;
-- 
2.16.4

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  parent reply index

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-03  8:16 [alsa-devel] [PATCH 00/58] ALSA: Constifications Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 01/58] ALSA: pci: Constify snd_pcm_hardware definitions Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 02/58] ALSA: usb: " Takashi Iwai
2020-01-03  8:16 ` Takashi Iwai [this message]
2020-01-03  8:16 ` [alsa-devel] [PATCH 04/58] ALSA: core: Constify snd_device_ops definitions Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 05/58] ALSA: drivers: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 06/58] ALSA: i2c: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 07/58] ALSA: isa: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 08/58] ALSA: hda: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 09/58] ALSA: pci: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 10/58] ALSA: usb: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 11/58] ALSA: aoa: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 12/58] ALSA: mips: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 13/58] ALSA: parisc: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 14/58] ALSA: pcmcia: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 15/58] ALSA: ppc: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 16/58] ALSA: sparc: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 17/58] ALSA: sh: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 18/58] ALSA: spi: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 19/58] ALSA: docs: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 20/58] ALSA: timer: Constify snd_timer_hardware definitions Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 21/58] ALSA: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 22/58] ALSA: ac97: Treat snd_ac97_bus_ops as const Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 23/58] ALSA: ac97: Constify snd_ac97_bus_ops definitions Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 24/58] ALSA: arm: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 25/58] ALSA: atmel: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 26/58] ALSA: drivers: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 27/58] ALSA: pci: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 28/58] ALSA: info: Make snd_info_entry_ops as const Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 29/58] ALSA: seq: Constify struct snd_midi_op Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 30/58] ALSA: vx: Constify snd_vx_hardware and snd_vx_ops definitions Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 31/58] ALSA: mixer: oss: Constify snd_mixer_oss_assign_table definition Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 32/58] ALSA: aoa: Constify snd_kcontrol_new items Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 33/58] ALSA: drivers: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 34/58] ALSA: i2c: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 35/58] ALSA: isa: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 36/58] ALSA: hda: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 37/58] ALSA: pci: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 38/58] ALSA: ppc: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 39/58] ALSA: sparc: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 40/58] ALSA: spi: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 41/58] ALSA: usb: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 42/58] ALSA: parisc: " Takashi Iwai
2020-01-03  8:16 ` [alsa-devel] [PATCH 43/58] ALSA: dummy: Constify snd_pcm_ops definitions Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 44/58] ALSA: opl3: Constify snd_opl3_drum_voice definitions Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 45/58] ALSA: ac97: Constify snd_ac97_res_table definition Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 46/58] ALSA: ca0106: Constify snd_ca0106_category_str items Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 47/58] ALSA: ca0106: Constify snd_ca0106_details Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 48/58] ALSA: ice17xx: Constify snd_ice1712_card_info Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 49/58] ALSA: ice1712: Constify wm-specific tables Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 50/58] ALSA: line6: Constify snd_ratden definitions Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 51/58] ALSA: usx2y: Constify struct snd_usb_audio_quirk entries Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 52/58] ALSA: seq: oss: Constify snd_seq_oss_callback definitions Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 53/58] ALSA: bt87x: Constify snd_bt87x_boards Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 54/58] ALSA: emu10k1: Constify snd_emu_chip_details Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 55/58] ALSA: es1968: Constify snd_es1968_tea575x_gpios Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 56/58] ALSA: fm801: Constify snd_fm801_tea575x_gpios Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 57/58] ALSA: hda: Constify snd_pci_quirk tables Takashi Iwai
2020-01-03  8:17 ` [alsa-devel] [PATCH 58/58] ALSA: pci: " Takashi Iwai

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