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mtd: rawnand: lpc32xx_mlc: clean the probe function

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Before fixing the error path of the probe function, fix the style of the
entire function and particularly the goto labels: they should indicate
what the next cleanup to do is.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal 2018-04-21 20:00:40 +02:00 committed by Boris Brezillon
parent 6f533c4631
commit ed64cb1df4
1 changed files with 20 additions and 18 deletions
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38
drivers/mtd/nand/raw/lpc32xx_mlc.c
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@ -673,7 +673,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
host->io_base = devm_ioremap_resource(&pdev->dev, rc);
if (IS_ERR(host->io_base))
return PTR_ERR(host->io_base);
host->io_base_phy = rc->start;
nand_chip = &host->nand_chip;
@ -706,11 +706,11 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
if (IS_ERR(host->clk)) {
dev_err(&pdev->dev, "Clock initialization failure\n");
res = -ENOENT;
goto err_exit1;
goto free_gpio;
}
res = clk_prepare_enable(host->clk);
if (res)
goto err_put_clk;
goto put_clk;
nand_chip->cmd_ctrl = lpc32xx_nand_cmd_ctrl;
nand_chip->dev_ready = lpc32xx_nand_device_ready;
@ -744,7 +744,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
res = lpc32xx_dma_setup(host);
if (res) {
res = -EIO;
goto err_exit2;
goto unprepare_clk;
}
}
@ -754,18 +754,18 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
*/
res = nand_scan_ident(mtd, 1, NULL);
if (res)
goto err_exit3;
goto release_dma_chan;
host->dma_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL);
if (!host->dma_buf) {
res = -ENOMEM;
goto err_exit3;
goto release_dma_chan;
}
host->dummy_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL);
if (!host->dummy_buf) {
res = -ENOMEM;
goto err_exit3;
goto release_dma_chan;
}
nand_chip->ecc.mode = NAND_ECC_HW;
@ -783,14 +783,14 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
if (host->irq < 0) {
dev_err(&pdev->dev, "failed to get platform irq\n");
res = -EINVAL;
goto err_exit3;
goto release_dma_chan;
}
if (request_irq(host->irq, (irq_handler_t)&lpc3xxx_nand_irq,
IRQF_TRIGGER_HIGH, DRV_NAME, host)) {
dev_err(&pdev->dev, "Error requesting NAND IRQ\n");
res = -ENXIO;
goto err_exit3;
goto release_dma_chan;
}
/*
@ -799,27 +799,29 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
*/
res = nand_scan_tail(mtd);
if (res)
goto err_exit4;
goto free_irq;
mtd->name = DRV_NAME;
res = mtd_device_register(mtd, host->ncfg->parts,
host->ncfg->num_parts);
if (!res)
return res;
if (res)
goto release_nand;
return 0;
release_nand:
nand_release(mtd);
err_exit4:
free_irq:
free_irq(host->irq, host);
err_exit3:
release_dma_chan:
if (use_dma)
dma_release_channel(host->dma_chan);
err_exit2:
unprepare_clk:
clk_disable_unprepare(host->clk);
err_put_clk:
put_clk:
clk_put(host->clk);
err_exit1:
free_gpio:
lpc32xx_wp_enable(host);
gpio_free(host->ncfg->wp_gpio);