On 2014年10月28日 22:22, Frans Klaver wrote:
On Tue, Oct 28, 2014 at 11:53 AM, Zhou Wang <wangzhou....@gmail.com> wrote:+ +static int hisi_nfc_probe(struct platform_device *pdev) +{ + int ret = 0, irq, buswidth, flag, max_chips = HINFC504_MAX_CHIP; + struct device *dev = &pdev->dev; + struct hinfc_host *host; + struct nand_chip *chip; + struct mtd_info *mtd; + struct resource *res; + struct device_node *np = dev->of_node; + struct mtd_part_parser_data ppdata; + + host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL); + if (!host) + return -ENOMEM; + host->dev = dev; + + platform_set_drvdata(pdev, host); + chip = &host->chip; + mtd = &host->mtd; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(dev, "no IRQ resource defined\n"); + ret = -ENXIO; + goto err_res; + } + + 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); + dev_err(dev, "devm_ioremap_resource[0] fail\n"); + goto err_res; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + chip->IO_ADDR_R = chip->IO_ADDR_W = devm_ioremap_resource(dev, res); + if (IS_ERR(chip->IO_ADDR_R)) { + ret = PTR_ERR(chip->IO_ADDR_R); + dev_err(dev, "devm_ioremap_resource[1] fail\n"); + goto err_res; + } + + mtd->priv = chip; + mtd->owner = THIS_MODULE; + mtd->name = "hisi_nand";+ mtd->dev.parent = &pdev->dev; This is a bug that lives in a bunch of other nand drivers as well. add_mtd_device (called by mtd_device_parse_register()) expects dev.parent to be set for properly adding a device reference to the sysfs node. Frans
My mistake, I will add this line. Thanks a lot for your reminding. Kind regards, Zhou Wang -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
