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mtd: nand: davinci: simplify error handling

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There is not needed to use a lot of names for err handling.
It complicates code support and reading.

Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Taras Kondratiuk <taras@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Ivan Khoronzhuk 2013-12-17 15:37:00 +02:00 committed by Brian Norris
parent 05103825fc
commit 30a3970cde
1 changed files with 17 additions and 29 deletions
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46
drivers/mtd/nand/davinci_nand.c
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@ -615,8 +615,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info) {
dev_err(&pdev->dev, "unable to allocate memory\n");
ret = -ENOMEM;
goto err_nomem;
return -ENOMEM;
}
platform_set_drvdata(pdev, info);
@ -625,20 +624,16 @@ static int nand_davinci_probe(struct platform_device *pdev)
res2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res1 || !res2) {
dev_err(&pdev->dev, "resource missing\n");
ret = -EINVAL;
goto err_nomem;
return -EINVAL;
}
vaddr = devm_ioremap_resource(&pdev->dev, res1);
if (IS_ERR(vaddr)) {
ret = PTR_ERR(vaddr);
goto err_ioremap;
}
if (IS_ERR(vaddr))
return PTR_ERR(vaddr);
base = devm_ioremap_resource(&pdev->dev, res2);
if (IS_ERR(base)) {
ret = PTR_ERR(base);
goto err_ioremap;
}
if (IS_ERR(base))
return PTR_ERR(base);
info->dev = &pdev->dev;
info->base = base;
@ -705,7 +700,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
spin_unlock_irq(&davinci_nand_lock);
if (ret == -EBUSY)
goto err_ecc;
return ret;
info->chip.ecc.calculate = nand_davinci_calculate_4bit;
info->chip.ecc.correct = nand_davinci_correct_4bit;
@ -721,8 +716,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
info->chip.ecc.strength = pdata->ecc_bits;
break;
default:
ret = -EINVAL;
goto err_ecc;
return -EINVAL;
}
info->chip.ecc.mode = ecc_mode;
@ -730,7 +724,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
if (IS_ERR(info->clk)) {
ret = PTR_ERR(info->clk);
dev_dbg(&pdev->dev, "unable to get AEMIF clock, err %d\n", ret);
goto err_clk;
return ret;
}
ret = clk_prepare_enable(info->clk);
@ -759,7 +753,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
info->core_chipsel);
if (ret < 0) {
dev_dbg(&pdev->dev, "NAND timing values setup fail\n");
goto err_timing;
goto err;
}
spin_lock_irq(&davinci_nand_lock);
@ -775,7 +769,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
ret = nand_scan_ident(&info->mtd, pdata->mask_chipsel ? 2 : 1, NULL);
if (ret < 0) {
dev_dbg(&pdev->dev, "no NAND chip(s) found\n");
goto err_scan;
goto err;
}
/* Update ECC layout if needed ... for 1-bit HW ECC, the default
@ -789,7 +783,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
if (!chunks || info->mtd.oobsize < 16) {
dev_dbg(&pdev->dev, "too small\n");
ret = -EINVAL;
goto err_scan;
goto err;
}
/* For small page chips, preserve the manufacturer's
@ -820,7 +814,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
dev_warn(&pdev->dev, "no 4-bit ECC support yet "
"for 4KiB-page NAND\n");
ret = -EIO;
goto err_scan;
goto err;
syndrome_done:
info->chip.ecc.layout = &info->ecclayout;
@ -828,7 +822,7 @@ syndrome_done:
ret = nand_scan_tail(&info->mtd);
if (ret < 0)
goto err_scan;
goto err;
if (pdata->parts)
ret = mtd_device_parse_register(&info->mtd, NULL, NULL,
@ -841,7 +835,7 @@ syndrome_done:
NULL, 0);
}
if (ret < 0)
goto err_scan;
goto err;
val = davinci_nand_readl(info, NRCSR_OFFSET);
dev_info(&pdev->dev, "controller rev. %d.%d\n",
@ -849,8 +843,7 @@ syndrome_done:
return 0;
err_scan:
err_timing:
err:
clk_disable_unprepare(info->clk);
err_clk_enable:
@ -858,11 +851,6 @@ err_clk_enable:
if (ecc_mode == NAND_ECC_HW_SYNDROME)
ecc4_busy = false;
spin_unlock_irq(&davinci_nand_lock);
err_ecc:
err_clk:
err_ioremap:
err_nomem:
return ret;
}