When nvmem_cell_read() fails in mt798x_phy_calibration(), the function returns without calling nvmem_cell_put(), leaking the cell reference.
Move nvmem_cell_put() right after nvmem_cell_read() to ensure the cell reference is always released regardless of the read result.
Found via static analysis and code review.
Fixes: 98c485eaf509 ("net: phy: add driver for MediaTek SoC built-in GE PHYs") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com --- drivers/net/phy/mediatek/mtk-ge-soc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/phy/mediatek/mtk-ge-soc.c b/drivers/net/phy/mediatek/mtk-ge-soc.c index cd09fbf92ef2..2c4bbc236202 100644 --- a/drivers/net/phy/mediatek/mtk-ge-soc.c +++ b/drivers/net/phy/mediatek/mtk-ge-soc.c @@ -1167,9 +1167,9 @@ static int mt798x_phy_calibration(struct phy_device *phydev) }
buf = (u32 *)nvmem_cell_read(cell, &len); + nvmem_cell_put(cell); if (IS_ERR(buf)) return PTR_ERR(buf); - nvmem_cell_put(cell);
if (!buf[0] || !buf[1] || !buf[2] || !buf[3] || len < 4 * sizeof(u32)) { phydev_err(phydev, "invalid efuse data\n");
On Thu, Dec 11, 2025 at 12:13:13PM +0400, Miaoqian Lin wrote:
When nvmem_cell_read() fails in mt798x_phy_calibration(), the function returns without calling nvmem_cell_put(), leaking the cell reference.
Move nvmem_cell_put() right after nvmem_cell_read() to ensure the cell reference is always released regardless of the read result.
Found via static analysis and code review.
Fixes: 98c485eaf509 ("net: phy: add driver for MediaTek SoC built-in GE PHYs") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com
Reviewed-by: Daniel Golle daniel@makrotopia.org
On Thu, Dec 11, 2025 at 12:13:13PM +0400, Miaoqian Lin wrote:
When nvmem_cell_read() fails in mt798x_phy_calibration(), the function returns without calling nvmem_cell_put(), leaking the cell reference.
Move nvmem_cell_put() right after nvmem_cell_read() to ensure the cell reference is always released regardless of the read result.
Found via static analysis and code review.
Fixes: 98c485eaf509 ("net: phy: add driver for MediaTek SoC built-in GE PHYs") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com
Reviewed-by: Andrew Lunn andrew@lunn.ch
Andrew
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