linux-kernel - [PATCH] pmdomain: amlogic: Constify struct meson_secure_pwrc_domain

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Message-ID: <e71abd8d75dd842690e5a11e38037bcf5feac189.1751816732.git.christophe.jaillet@wanadoo.fr>
Date: Sun,  6 Jul 2025 17:45:41 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Ulf Hansson <ulf.hansson@...aro.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Kevin Hilman <khilman@...libre.com>,
	Jerome Brunet <jbrunet@...libre.com>,
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	linux-pm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-amlogic@...ts.infradead.org
Subject: [PATCH] pmdomain: amlogic: Constify struct meson_secure_pwrc_domain_data

'struct meson_secure_pwrc_domain_data' are not modified in these drivers.

Constifying these structures moves some data to a read-only section, so
increases overall security.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   9248	    408	      0	   9656	   25b8	drivers/pmdomain/amlogic/meson-secure-pwrc.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
   9344	    304	      0	   9648	   25b0	drivers/pmdomain/amlogic/meson-secure-pwrc.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Compile tested only
---
 drivers/pmdomain/amlogic/meson-secure-pwrc.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/pmdomain/amlogic/meson-secure-pwrc.c b/drivers/pmdomain/amlogic/meson-secure-pwrc.c
index ff76ea36835e..e8bda60078c4 100644
--- a/drivers/pmdomain/amlogic/meson-secure-pwrc.c
+++ b/drivers/pmdomain/amlogic/meson-secure-pwrc.c
@@ -342,32 +342,32 @@ static int meson_secure_pwrc_probe(struct platform_device *pdev)
 	return of_genpd_add_provider_onecell(pdev->dev.of_node, &pwrc->xlate);
 }
 
-static struct meson_secure_pwrc_domain_data meson_secure_a1_pwrc_data = {
+static const struct meson_secure_pwrc_domain_data meson_secure_a1_pwrc_data = {
 	.domains = a1_pwrc_domains,
 	.count = ARRAY_SIZE(a1_pwrc_domains),
 };
 
-static struct meson_secure_pwrc_domain_data amlogic_secure_a4_pwrc_data = {
+static const struct meson_secure_pwrc_domain_data amlogic_secure_a4_pwrc_data = {
 	.domains = a4_pwrc_domains,
 	.count = ARRAY_SIZE(a4_pwrc_domains),
 };
 
-static struct meson_secure_pwrc_domain_data amlogic_secure_a5_pwrc_data = {
+static const struct meson_secure_pwrc_domain_data amlogic_secure_a5_pwrc_data = {
 	.domains = a5_pwrc_domains,
 	.count = ARRAY_SIZE(a5_pwrc_domains),
 };
 
-static struct meson_secure_pwrc_domain_data amlogic_secure_c3_pwrc_data = {
+static const struct meson_secure_pwrc_domain_data amlogic_secure_c3_pwrc_data = {
 	.domains = c3_pwrc_domains,
 	.count = ARRAY_SIZE(c3_pwrc_domains),
 };
 
-static struct meson_secure_pwrc_domain_data meson_secure_s4_pwrc_data = {
+static const struct meson_secure_pwrc_domain_data meson_secure_s4_pwrc_data = {
 	.domains = s4_pwrc_domains,
 	.count = ARRAY_SIZE(s4_pwrc_domains),
 };
 
-static struct meson_secure_pwrc_domain_data amlogic_secure_t7_pwrc_data = {
+static const struct meson_secure_pwrc_domain_data amlogic_secure_t7_pwrc_data = {
 	.domains = t7_pwrc_domains,
 	.count = ARRAY_SIZE(t7_pwrc_domains),
 };
-- 
2.50.0