linux-kernel - [PATCH 1/2] drm/panel: ili9322: Remove redundant volatle

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 01 Oct 2023 11:24:13 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH 1/2] drm/panel: ili9322: Remove redundant volatle_reg()
 operation

The ili9322 driver has a volatile_reg() operation in it's regmap which
always returns false. This is redundant since it is the default in the
regmap core, remove the operation for a trivial code size and performance
improvement.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
index 61c872f0f7ca..15b81e5228b5 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
@@ -325,11 +325,6 @@ static struct regmap_bus ili9322_regmap_bus = {
 	.val_format_endian_default = REGMAP_ENDIAN_BIG,
 };
 
-static bool ili9322_volatile_reg(struct device *dev, unsigned int reg)
-{
-	return false;
-}
-
 static bool ili9322_writeable_reg(struct device *dev, unsigned int reg)
 {
 	/* Just register 0 is read-only */
@@ -343,7 +338,6 @@ static const struct regmap_config ili9322_regmap_config = {
 	.val_bits = 8,
 	.max_register = 0x44,
 	.cache_type = REGCACHE_RBTREE,
-	.volatile_reg = ili9322_volatile_reg,
 	.writeable_reg = ili9322_writeable_reg,
 };
 

-- 
2.39.2