diff mbox series

[net-next,v6,2/6] net: dsa: microchip: do not store max MTU for all ports

Message ID 20221124101458.3353902-3-o.rempel@pengutronix.de (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: dsa: microchip: add MTU support for KSZ8 series | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 10 of 10 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 31 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Oleksij Rempel Nov. 24, 2022, 10:14 a.m. UTC 
If we have global MTU configuration, it is enough to configure it on CPU
port only.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/microchip/ksz9477.c    | 14 +++++---------
 drivers/net/dsa/microchip/ksz_common.h |  1 -
 2 files changed, 5 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index 602d00671bef..f6e7968ab105 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -45,19 +45,15 @@  static void ksz9477_port_cfg32(struct ksz_device *dev, int port, int offset,
 
 int ksz9477_change_mtu(struct ksz_device *dev, int port, int mtu)
 {
-	u16 frame_size, max_frame = 0;
-	int i;
-
-	frame_size = mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
+	u16 frame_size;
 
-	/* Cache the per-port MTU setting */
-	dev->ports[port].max_frame = frame_size;
+	if (!dsa_is_cpu_port(dev->ds, port))
+		return 0;
 
-	for (i = 0; i < dev->info->port_cnt; i++)
-		max_frame = max(max_frame, dev->ports[i].max_frame);
+	frame_size = mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
 
 	return regmap_update_bits(dev->regmap[1], REG_SW_MTU__2,
-				  REG_SW_MTU_MASK, max_frame);
+				  REG_SW_MTU_MASK, frame_size);
 }
 
 static int ksz9477_wait_vlan_ctrl_ready(struct ksz_device *dev)
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 27c26ee15af4..61228be299f9 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -95,7 +95,6 @@  struct ksz_port {
 
 	struct ksz_port_mib mib;
 	phy_interface_t interface;
-	u16 max_frame;
 	u32 rgmii_tx_val;
 	u32 rgmii_rx_val;
 	struct ksz_device *ksz_dev;