diff mbox series

[net,1/2] rswitch: Fix renesas_eth_sw_remove() implementation

Message ID 20231010124858.183891-2-yoshihiro.shimoda.uh@renesas.com (mailing list archive)
State Accepted
Commit 510b18cf23b9bd8a982ef7f1fb19f3968a2bf787
Delegated to: Netdev Maintainers
Headers show
Series rswitch: Fix issues on specific conditions | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1363 this patch: 1363
netdev/cc_maintainers fail 1 blamed authors not CCed: andrew@lunn.ch; 1 maintainers not CCed: andrew@lunn.ch
netdev/build_clang success Errors and warnings before: 1387 this patch: 1387
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 1387 this patch: 1387
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 21 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Yoshihiro Shimoda Oct. 10, 2023, 12:48 p.m. UTC 
Fix functions calling order and a condition in renesas_eth_sw_remove().
Otherwise, kernel NULL pointer dereference happens from phy_stop() if
a net device opens.

Fixes: 3590918b5d07 ("net: ethernet: renesas: Add support for "Ethernet Switch"")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 drivers/net/ethernet/renesas/rswitch.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c
index fc01ad3f340d..4d7c48288047 100644
--- a/drivers/net/ethernet/renesas/rswitch.c
+++ b/drivers/net/ethernet/renesas/rswitch.c
@@ -1964,15 +1964,17 @@  static void rswitch_deinit(struct rswitch_private *priv)
 	rswitch_gwca_hw_deinit(priv);
 	rcar_gen4_ptp_unregister(priv->ptp_priv);
 
-	for (i = 0; i < RSWITCH_NUM_PORTS; i++) {
+	rswitch_for_each_enabled_port(priv, i) {
 		struct rswitch_device *rdev = priv->rdev[i];
 
-		phy_exit(priv->rdev[i]->serdes);
-		rswitch_ether_port_deinit_one(rdev);
 		unregister_netdev(rdev->ndev);
-		rswitch_device_free(priv, i);
+		rswitch_ether_port_deinit_one(rdev);
+		phy_exit(priv->rdev[i]->serdes);
 	}
 
+	for (i = 0; i < RSWITCH_NUM_PORTS; i++)
+		rswitch_device_free(priv, i);
+
 	rswitch_gwca_ts_queue_free(priv);
 	rswitch_gwca_linkfix_free(priv);