From: Herve Codina herve.codina@bootlin.com
stable inclusion from stable-v6.6.33 commit 77237eabdcd9103e580d5c95f92fc6da680fe455 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAD6H2
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 99975ad644c7836414183fa7be4f883a4fb2bf64 upstream.
A debugfs directory entry is create early during probe(). This entry is not removed on error path leading to some "already present" issues in case of EPROBE_DEFER.
Create this entry later in the probe() code to avoid the need to change many 'return' in 'goto' and add the removal in the already present error path.
Fixes: 942814840127 ("net: lan966x: Add VCAP debugFS support") Cc: stable@vger.kernel.org Signed-off-by: Herve Codina herve.codina@bootlin.com Reviewed-by: Andrew Lunn andrew@lunn.ch Reviewed-by: Horatiu Vultur horatiu.vultur@microchip.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Wang Hai wanghai38@huawei.com --- drivers/net/ethernet/microchip/lan966x/lan966x_main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c index 0d6e79af2410..3f1033abd462 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c @@ -1088,8 +1088,6 @@ static int lan966x_probe(struct platform_device *pdev) platform_set_drvdata(pdev, lan966x); lan966x->dev = &pdev->dev;
- lan966x->debugfs_root = debugfs_create_dir("lan966x", NULL); - if (!device_get_mac_address(&pdev->dev, mac_addr)) { ether_addr_copy(lan966x->base_mac, mac_addr); } else { @@ -1180,6 +1178,8 @@ static int lan966x_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, -ENODEV, "no ethernet-ports child found\n");
+ lan966x->debugfs_root = debugfs_create_dir("lan966x", NULL); + /* init switch */ lan966x_init(lan966x); lan966x_stats_init(lan966x); @@ -1258,6 +1258,8 @@ static int lan966x_probe(struct platform_device *pdev) destroy_workqueue(lan966x->stats_queue); mutex_destroy(&lan966x->stats_lock);
+ debugfs_remove_recursive(lan966x->debugfs_root); + return err; }