From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.bootlin.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1eydOD-0001Ym-59 for linux-mtd@lists.infradead.org; Wed, 21 Mar 2018 13:03:20 +0000 From: Miquel Raynal To: Boris Brezillon , Richard Weinberger , David Woodhouse , Brian Norris , Marek Vasut Cc: linux-mtd@lists.infradead.org, Kamal Dasu , Masahiro Yamada , Miquel Raynal Subject: [PATCH v2 13/16] mtd: rawnand: hisi504: fix and enhance the probe function error path Date: Wed, 21 Mar 2018 14:01:54 +0100 Message-Id: <20180321130157.9524-14-miquel.raynal@bootlin.com> In-Reply-To: <20180321130157.9524-1-miquel.raynal@bootlin.com> References: <20180321130157.9524-1-miquel.raynal@bootlin.com> List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , An error after nand_scan_tail() should trigger a nand_cleanup(). The helper mtd_device_parse_register() returns an error code that should be checked and nand_cleanup() called accordingly. Also prepare the migration of the hisi504_nand driver to use nand_scan() by cleaning the error path in the probe function. Signed-off-by: Miquel Raynal --- drivers/mtd/nand/raw/hisi504_nand.c | 35 ++++++++++++----------------------- 1 file changed, 12 insertions(+), 23 deletions(-) diff --git a/drivers/mtd/nand/raw/hisi504_nand.c b/drivers/mtd/nand/raw/hisi504_nand.c index 27558a67fa41..a1e009c8e556 100644 --- a/drivers/mtd/nand/raw/hisi504_nand.c +++ b/drivers/mtd/nand/raw/hisi504_nand.c @@ -731,23 +731,19 @@ static int hisi_nfc_probe(struct platform_device *pdev) irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(dev, "no IRQ resource defined\n"); - ret = -ENXIO; - goto err_res; + return -ENXIO; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); host->iobase = devm_ioremap_resource(dev, res); - if (IS_ERR(host->iobase)) { - ret = PTR_ERR(host->iobase); - goto err_res; - } + if (IS_ERR(host->iobase)) + return PTR_ERR(host->iobase); res = platform_get_resource(pdev, IORESOURCE_MEM, 1); host->mmio = devm_ioremap_resource(dev, res); if (IS_ERR(host->mmio)) { - ret = PTR_ERR(host->mmio); dev_err(dev, "devm_ioremap_resource[1] fail\n"); - goto err_res; + return PTR_ERR(host->mmio); } mtd->name = "hisi_nand"; @@ -770,19 +766,17 @@ static int hisi_nfc_probe(struct platform_device *pdev) ret = devm_request_irq(dev, irq, hinfc_irq_handle, 0x0, "nandc", host); if (ret) { dev_err(dev, "failed to request IRQ\n"); - goto err_res; + return ret; } ret = nand_scan_ident(mtd, max_chips, NULL); if (ret) - goto err_res; + return ret; host->buffer = dmam_alloc_coherent(dev, mtd->writesize + mtd->oobsize, &host->dma_buffer, GFP_KERNEL); - if (!host->buffer) { - ret = -ENOMEM; - goto err_res; - } + if (!host->buffer) + return -ENOMEM; host->dma_oob = host->dma_buffer + mtd->writesize; memset(host->buffer, 0xff, mtd->writesize + mtd->oobsize); @@ -798,8 +792,7 @@ static int hisi_nfc_probe(struct platform_device *pdev) */ default: dev_err(dev, "NON-2KB page size nand flash\n"); - ret = -EINVAL; - goto err_res; + return -EINVAL; } hinfc_write(host, flag, HINFC504_CON); @@ -809,21 +802,17 @@ static int hisi_nfc_probe(struct platform_device *pdev) ret = nand_scan_tail(mtd); if (ret) { dev_err(dev, "nand_scan_tail failed: %d\n", ret); - goto err_res; + return ret; } ret = mtd_device_register(mtd, NULL, 0); if (ret) { dev_err(dev, "Err MTD partition=%d\n", ret); - goto err_mtd; + nand_cleanup(chip); + return ret; } return 0; - -err_mtd: - nand_release(mtd); -err_res: - return ret; } static int hisi_nfc_remove(struct platform_device *pdev) -- 2.14.1