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Message-ID: <54c3b30930f80f4895e6fa2f4234714fdea4ef4e.1723033266.git.christophe.jaillet@wanadoo.fr>
Date: Wed, 7 Aug 2024 14:22:26 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>,
netdev@...r.kernel.org
Subject: [PATCH net-next] net: sungem_phy: Constify struct mii_phy_def
'struct mii_phy_def' are not modified in this driver.
Constifying these structures moves some data to a read-only section, so
increase overall security.
While at it fix the checkpatch warning related to this patch (some missing
newlines and spaces around *)
On a x86_64, with allmodconfig:
Before:
======
27709 928 0 28637 6fdd drivers/net/sungem_phy.o
After:
=====
text data bss dec hex filename
28157 476 0 28633 6fd9 drivers/net/sungem_phy.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Compile tested-only.
---
drivers/net/sungem_phy.c | 35 +++++++++++++++++++----------------
include/linux/sungem_phy.h | 2 +-
2 files changed, 20 insertions(+), 17 deletions(-)
diff --git a/drivers/net/sungem_phy.c b/drivers/net/sungem_phy.c
index d591e33268e5..55aa8d0c8e1f 100644
--- a/drivers/net/sungem_phy.c
+++ b/drivers/net/sungem_phy.c
@@ -893,7 +893,7 @@ static const struct mii_phy_ops bcm5201_phy_ops = {
.read_link = genmii_read_link,
};
-static struct mii_phy_def bcm5201_phy_def = {
+static const struct mii_phy_def bcm5201_phy_def = {
.phy_id = 0x00406210,
.phy_id_mask = 0xfffffff0,
.name = "BCM5201",
@@ -912,7 +912,7 @@ static const struct mii_phy_ops bcm5221_phy_ops = {
.read_link = genmii_read_link,
};
-static struct mii_phy_def bcm5221_phy_def = {
+static const struct mii_phy_def bcm5221_phy_def = {
.phy_id = 0x004061e0,
.phy_id_mask = 0xfffffff0,
.name = "BCM5221",
@@ -930,7 +930,8 @@ static const struct mii_phy_ops bcm5241_phy_ops = {
.poll_link = genmii_poll_link,
.read_link = genmii_read_link,
};
-static struct mii_phy_def bcm5241_phy_def = {
+
+static const struct mii_phy_def bcm5241_phy_def = {
.phy_id = 0x0143bc30,
.phy_id_mask = 0xfffffff0,
.name = "BCM5241",
@@ -949,7 +950,7 @@ static const struct mii_phy_ops bcm5400_phy_ops = {
.read_link = bcm54xx_read_link,
};
-static struct mii_phy_def bcm5400_phy_def = {
+static const struct mii_phy_def bcm5400_phy_def = {
.phy_id = 0x00206040,
.phy_id_mask = 0xfffffff0,
.name = "BCM5400",
@@ -968,7 +969,7 @@ static const struct mii_phy_ops bcm5401_phy_ops = {
.read_link = bcm54xx_read_link,
};
-static struct mii_phy_def bcm5401_phy_def = {
+static const struct mii_phy_def bcm5401_phy_def = {
.phy_id = 0x00206050,
.phy_id_mask = 0xfffffff0,
.name = "BCM5401",
@@ -987,7 +988,7 @@ static const struct mii_phy_ops bcm5411_phy_ops = {
.read_link = bcm54xx_read_link,
};
-static struct mii_phy_def bcm5411_phy_def = {
+static const struct mii_phy_def bcm5411_phy_def = {
.phy_id = 0x00206070,
.phy_id_mask = 0xfffffff0,
.name = "BCM5411",
@@ -1007,7 +1008,7 @@ static const struct mii_phy_ops bcm5421_phy_ops = {
.enable_fiber = bcm5421_enable_fiber,
};
-static struct mii_phy_def bcm5421_phy_def = {
+static const struct mii_phy_def bcm5421_phy_def = {
.phy_id = 0x002060e0,
.phy_id_mask = 0xfffffff0,
.name = "BCM5421",
@@ -1026,7 +1027,7 @@ static const struct mii_phy_ops bcm5421k2_phy_ops = {
.read_link = bcm54xx_read_link,
};
-static struct mii_phy_def bcm5421k2_phy_def = {
+static const struct mii_phy_def bcm5421k2_phy_def = {
.phy_id = 0x002062e0,
.phy_id_mask = 0xfffffff0,
.name = "BCM5421-K2",
@@ -1045,7 +1046,7 @@ static const struct mii_phy_ops bcm5461_phy_ops = {
.enable_fiber = bcm5461_enable_fiber,
};
-static struct mii_phy_def bcm5461_phy_def = {
+static const struct mii_phy_def bcm5461_phy_def = {
.phy_id = 0x002060c0,
.phy_id_mask = 0xfffffff0,
.name = "BCM5461",
@@ -1064,7 +1065,7 @@ static const struct mii_phy_ops bcm5462V_phy_ops = {
.read_link = bcm54xx_read_link,
};
-static struct mii_phy_def bcm5462V_phy_def = {
+static const struct mii_phy_def bcm5462V_phy_def = {
.phy_id = 0x002060d0,
.phy_id_mask = 0xfffffff0,
.name = "BCM5462-Vesta",
@@ -1094,7 +1095,7 @@ static const struct mii_phy_ops marvell88e1111_phy_ops = {
/* two revs in darwin for the 88e1101 ... I could use a datasheet
* to get the proper names...
*/
-static struct mii_phy_def marvell88e1101v1_phy_def = {
+static const struct mii_phy_def marvell88e1101v1_phy_def = {
.phy_id = 0x01410c20,
.phy_id_mask = 0xfffffff0,
.name = "Marvell 88E1101v1",
@@ -1102,7 +1103,8 @@ static struct mii_phy_def marvell88e1101v1_phy_def = {
.magic_aneg = 1,
.ops = &marvell88e1101_phy_ops
};
-static struct mii_phy_def marvell88e1101v2_phy_def = {
+
+static const struct mii_phy_def marvell88e1101v2_phy_def = {
.phy_id = 0x01410c60,
.phy_id_mask = 0xfffffff0,
.name = "Marvell 88E1101v2",
@@ -1110,7 +1112,8 @@ static struct mii_phy_def marvell88e1101v2_phy_def = {
.magic_aneg = 1,
.ops = &marvell88e1101_phy_ops
};
-static struct mii_phy_def marvell88e1111_phy_def = {
+
+static const struct mii_phy_def marvell88e1111_phy_def = {
.phy_id = 0x01410cc0,
.phy_id_mask = 0xfffffff0,
.name = "Marvell 88E1111",
@@ -1127,7 +1130,7 @@ static const struct mii_phy_ops generic_phy_ops = {
.read_link = genmii_read_link
};
-static struct mii_phy_def genmii_phy_def = {
+static const struct mii_phy_def genmii_phy_def = {
.phy_id = 0x00000000,
.phy_id_mask = 0x00000000,
.name = "Generic MII",
@@ -1136,7 +1139,7 @@ static struct mii_phy_def genmii_phy_def = {
.ops = &generic_phy_ops
};
-static struct mii_phy_def* mii_phy_table[] = {
+static const struct mii_phy_def *mii_phy_table[] = {
&bcm5201_phy_def,
&bcm5221_phy_def,
&bcm5241_phy_def,
@@ -1156,9 +1159,9 @@ static struct mii_phy_def* mii_phy_table[] = {
int sungem_phy_probe(struct mii_phy *phy, int mii_id)
{
+ const struct mii_phy_def *def;
int rc;
u32 id;
- struct mii_phy_def* def;
int i;
/* We do not reset the mii_phy structure as the driver
diff --git a/include/linux/sungem_phy.h b/include/linux/sungem_phy.h
index c505f30e8b68..eecc7eb63bfb 100644
--- a/include/linux/sungem_phy.h
+++ b/include/linux/sungem_phy.h
@@ -40,7 +40,7 @@ enum {
/* An instance of a PHY, partially borrowed from mii_if_info */
struct mii_phy
{
- struct mii_phy_def* def;
+ const struct mii_phy_def *def;
u32 advertising;
int mii_id;
--
2.45.2
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