linux-kernel - [PATCH 4/4] phy: cadence-torrent: Constify a u32[]

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Message-ID: <34e23ceb6b7b7eb730ee8deee21d231b504dc65f.1720718240.git.christophe.jaillet@wanadoo.fr>
Date: Thu, 11 Jul 2024 19:31:09 +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 4/4] phy: cadence-torrent: Constify a u32[]

'cdns_torrent_refclk_driver_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
  93578	   4798	     16	  98392	  18058	drivers/phy/cadence/phy-cadence-torrent.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  93606	   4790	     16	  98412	  1806c	drivers/phy/cadence/phy-cadence-torrent.o

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

diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index e99fa19aafb2..098c141c28c2 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -285,7 +285,7 @@ static const int refclk_driver_parent_index[] = {
 	CDNS_TORRENT_RECEIVED_REFCLK
 };
 
-static u32 cdns_torrent_refclk_driver_mux_table[] = { 1, 0 };
+static const u32 cdns_torrent_refclk_driver_mux_table[] = { 1, 0 };
 
 enum cdns_torrent_phy_type {
 	TYPE_NONE,
-- 
2.45.2