mtd: rawnand: ingenic: Fix missing put_device in ingenic_ecc_get

[ Upstream commit ba1b71b008e97fd747845ff3a818420b11bbe830 ]

If of_find_device_by_node() succeeds, ingenic_ecc_get() doesn't have
a corresponding put_device(). Thus add put_device() to fix the exception
handling.

Fixes: 15de8c6efd0e ("mtd: rawnand: ingenic: Separate top-level and SoC specific code")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20211230072751.21622-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
index efe0ffe4f1abc87d0446f322fe17bea92c820474..9054559e52dda6c7dd15b3104f09b5133756b75f 100644 (file)
--- a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
+++ b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
@@ -68,9 +68,14 @@ static struct ingenic_ecc *ingenic_ecc_get(struct device_node *np)
        struct ingenic_ecc *ecc;
 
        pdev = of_find_device_by_node(np);
-       if (!pdev || !platform_get_drvdata(pdev))
+       if (!pdev)
                return ERR_PTR(-EPROBE_DEFER);
 
+       if (!platform_get_drvdata(pdev)) {
+               put_device(&pdev->dev);
+               return ERR_PTR(-EPROBE_DEFER);
+       }
+
        ecc = platform_get_drvdata(pdev);
        clk_prepare_enable(ecc->clk);