Patch "mtd: rawnand: intel: Add missing of_node_put() in ebu_nand_probe()" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    mtd: rawnand: intel: Add missing of_node_put() in ebu_nand_probe()

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mtd-rawnand-intel-add-missing-of_node_put-in-ebu_nan.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit d486c4ada926bfd6bd80d01afbf41e5187b9f27e
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date:   Sat Sep 24 21:10:10 2022 +0800

    mtd: rawnand: intel: Add missing of_node_put() in ebu_nand_probe()
    
    [ Upstream commit 1f3b494d1fc18ebb37aaa47107e9b84bf5b54ff7 ]
    
    The 'chip_np' returned by of_get_next_child() with refcount decremented,
    of_node_put() need be called in error path to decrease the refcount.
    
    Fixes: bfc618fcc3f1 ("mtd: rawnand: intel: Read the chip-select line from the correct OF node")
    Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
    Reviewed-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
    Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
    Link: https://lore.kernel.org/linux-mtd/20220924131010.957117-1-yangyingliang@xxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/mtd/nand/raw/intel-nand-controller.c b/drivers/mtd/nand/raw/intel-nand-controller.c
index 056835fd4562..53071e791e17 100644
--- a/drivers/mtd/nand/raw/intel-nand-controller.c
+++ b/drivers/mtd/nand/raw/intel-nand-controller.c
@@ -614,11 +614,12 @@ static int ebu_nand_probe(struct platform_device *pdev)
 	ret = of_property_read_u32(chip_np, "reg", &cs);
 	if (ret) {
 		dev_err(dev, "failed to get chip select: %d\n", ret);
-		return ret;
+		goto err_of_node_put;
 	}
 	if (cs >= MAX_CS) {
 		dev_err(dev, "got invalid chip select: %d\n", cs);
-		return -EINVAL;
+		ret = -EINVAL;
+		goto err_of_node_put;
 	}
 
 	ebu_host->cs_num = cs;
@@ -627,18 +628,20 @@ static int ebu_nand_probe(struct platform_device *pdev)
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, resname);
 	ebu_host->cs[cs].chipaddr = devm_ioremap_resource(dev, res);
 	if (IS_ERR(ebu_host->cs[cs].chipaddr))
-		return PTR_ERR(ebu_host->cs[cs].chipaddr);
+		goto err_of_node_put;
 	ebu_host->cs[cs].nand_pa = res->start;
 
 	ebu_host->clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(ebu_host->clk))
-		return dev_err_probe(dev, PTR_ERR(ebu_host->clk),
-				     "failed to get clock\n");
+	if (IS_ERR(ebu_host->clk)) {
+		ret = dev_err_probe(dev, PTR_ERR(ebu_host->clk),
+				    "failed to get clock\n");
+		goto err_of_node_put;
+	}
 
 	ret = clk_prepare_enable(ebu_host->clk);
 	if (ret) {
 		dev_err(dev, "failed to enable clock: %d\n", ret);
-		return ret;
+		goto err_of_node_put;
 	}
 	ebu_host->clk_rate = clk_get_rate(ebu_host->clk);
 
@@ -703,6 +706,8 @@ static int ebu_nand_probe(struct platform_device *pdev)
 	ebu_dma_cleanup(ebu_host);
 err_disable_unprepare_clk:
 	clk_disable_unprepare(ebu_host->clk);
+err_of_node_put:
+	of_node_put(chip_np);
 
 	return ret;
 }