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

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: bfc618fcc3 ("mtd: rawnand: intel: Read the chip-select line from the correct OF node")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220924131010.957117-1-yangyingliang@huawei.com
This commit is contained in:
Yang Yingliang 2022-09-24 21:10:10 +08:00 committed by Miquel Raynal
parent 12b58961de
commit 1f3b494d1f
1 changed files with 15 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/mtd/nand/raw/intel-nand-controller.c
View File

@ -608,11 +608,12 @@ 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;
@ -620,18 +621,22 @@ static int ebu_nand_probe(struct platform_device *pdev)
resname = devm_kasprintf(dev, GFP_KERNEL, "nand_cs%d", cs);
ebu_host->cs[cs].chipaddr = devm_platform_ioremap_resource_byname(pdev,
resname);
if (IS_ERR(ebu_host->cs[cs].chipaddr))
return PTR_ERR(ebu_host->cs[cs].chipaddr);
if (IS_ERR(ebu_host->cs[cs].chipaddr)) {
ret = PTR_ERR(ebu_host->cs[cs].chipaddr);
goto err_of_node_put;
}
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->dma_tx = dma_request_chan(dev, "tx");
@ -695,6 +700,8 @@ err_cleanup_dma:
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;
}