linux-kernel - [PATCH 3/3] phy: cadence: Sierra: Constify a u32[]

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Message-ID: <43d881d52e3c1632ad197d4c2c18b6c481a13b24.1720723132.git.christophe.jaillet@wanadoo.fr>
Date: Thu, 11 Jul 2024 21:34:54 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: vkoul@...nel.org,
	kishon@...nel.org
Cc: linux-phy@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH 3/3] phy: cadence: Sierra: Constify a u32[]

'cdns_sierra_pll_mux_table' is not modified in this driver.
And it is only used as a "const u32 *".

Constifying this structure moves some data to a read-only section, so
increase overall security.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
  60937	   3894	     16	  64847	   fd4f	drivers/phy/cadence/phy-cadence-sierra.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  60897	   3878	     16	  64791	   fd17	drivers/phy/cadence/phy-cadence-sierra.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Compile tested-only.
---
 drivers/phy/cadence/phy-cadence-sierra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c
index 947492c8f381..3010c9f24136 100644
--- a/drivers/phy/cadence/phy-cadence-sierra.c
+++ b/drivers/phy/cadence/phy-cadence-sierra.c
@@ -310,7 +310,7 @@ static const struct clk_parent_data pll_mux_parent_data[][SIERRA_NUM_CMN_PLLC_PA
 	},
 };
 
-static u32 cdns_sierra_pll_mux_table[][SIERRA_NUM_CMN_PLLC_PARENTS] = {
+static const u32 cdns_sierra_pll_mux_table[][SIERRA_NUM_CMN_PLLC_PARENTS] = {
 	[CMN_PLLLC] = { 0, 1 },
 	[CMN_PLLLC1] = { 1, 0 },
 };
-- 
2.45.2