linux-kernel - [PATCH 6.7 663/713] net: txgbe: fix clk_name exceed MAX_DEV

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Date: Sun, 24 Mar 2024 18:46:29 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Duanqiang Wen <duanqiangwen@...-swift.com>,
	Michal Kubiak <michal.kubiak@...el.com>,
	Paolo Abeni <pabeni@...hat.com>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.7 663/713] net: txgbe: fix clk_name exceed MAX_DEV_ID limits

From: Duanqiang Wen <duanqiangwen@...-swift.com>

[ Upstream commit e30cef001da259e8df354b813015d0e5acc08740 ]

txgbe register clk which name is i2c_designware.pci_dev_id(),
clk_name will be stored in clk_lookup_alloc. If PCIe bus number
is larger than 0x39, clk_name size will be larger than 20 bytes.
It exceeds clk_lookup_alloc MAX_DEV_ID limits. So the driver
shortened clk_name.

Fixes: b63f20485e43 ("net: txgbe: Register fixed rate clock")
Signed-off-by: Duanqiang Wen <duanqiangwen@...-swift.com>
Reviewed-by: Michal Kubiak <michal.kubiak@...el.com>
Link: https://lore.kernel.org/r/20240313080634.459523-1-duanqiangwen@net-swift.com
Signed-off-by: Paolo Abeni <pabeni@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
index b6c06adb86560..b95187a0847f7 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
@@ -551,7 +551,7 @@ static int txgbe_clock_register(struct txgbe *txgbe)
 	char clk_name[32];
 	struct clk *clk;
 
-	snprintf(clk_name, sizeof(clk_name), "i2c_designware.%d",
+	snprintf(clk_name, sizeof(clk_name), "i2c_dw.%d",
 		 pci_dev_id(pdev));
 
 	clk = clk_register_fixed_rate(NULL, clk_name, NULL, 0, 156250000);
-- 
2.43.0