The patch titled rtc: rtc-ds1742 nvram attribute fix has been added to the -mm tree. Its filename is rtc-rtc-ds1742-nvram-attribute-fix.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: rtc: rtc-ds1742 nvram attribute fix From: Torsten Ertbjerg Rasmussen <ertbjerg@xxxxxxxxx> The RTC driver for ds1742 / ds1743 uses a static nvram attribute. This patch replaces this static attribute with one nvram attribute for each ds174x registered. The nvram size is not the same for all types of ds174x. The nvram size is accessible as the file size of the nvram attribute in sysfs. With only a single nvram attribute, this file size will be incorrect if more than one type of ds174x is present on a system. See the comment in the removed code below. This patch have been tested with linux-2.6.28 and linux-2.6.29-rc5/6 on a custom board with one ds1743. Signed-off-by: Torsten Ertbjerg Rasmussen <ertbjerg@xxxxxxxxx> Signed-off-by: Alessandro Zummo <a.zummo@xxxxxxxxxxxx> Cc: Atsushi Nemoto <anemo@xxxxxxxxxxxxx> Cc: David Brownell <david-b@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/rtc/rtc-ds1742.c | 31 ++++++++++++++----------------- 1 file changed, 14 insertions(+), 17 deletions(-) diff -puN drivers/rtc/rtc-ds1742.c~rtc-rtc-ds1742-nvram-attribute-fix drivers/rtc/rtc-ds1742.c --- a/drivers/rtc/rtc-ds1742.c~rtc-rtc-ds1742-nvram-attribute-fix +++ a/drivers/rtc/rtc-ds1742.c @@ -57,6 +57,7 @@ struct rtc_plat_data { size_t size; resource_size_t baseaddr; unsigned long last_jiffies; + struct bin_attribute nvram_attr; }; static int ds1742_rtc_set_time(struct device *dev, struct rtc_time *tm) @@ -157,18 +158,6 @@ static ssize_t ds1742_nvram_write(struct return count; } -static struct bin_attribute ds1742_nvram_attr = { - .attr = { - .name = "nvram", - .mode = S_IRUGO | S_IWUSR, - }, - .read = ds1742_nvram_read, - .write = ds1742_nvram_write, - /* REVISIT: size in sysfs won't match actual size... if it's - * not a constant, each RTC should have its own attribute. - */ -}; - static int __devinit ds1742_rtc_probe(struct platform_device *pdev) { struct rtc_device *rtc; @@ -199,6 +188,12 @@ static int __devinit ds1742_rtc_probe(st pdata->size_nvram = pdata->size - RTC_SIZE; pdata->ioaddr_rtc = ioaddr + pdata->size_nvram; + pdata->nvram_attr.attr.name = "nvram"; + pdata->nvram_attr.attr.mode = S_IRUGO | S_IWUSR; + pdata->nvram_attr.read = ds1742_nvram_read; + pdata->nvram_attr.write = ds1742_nvram_write; + pdata->nvram_attr.size = pdata->size_nvram; + /* turn RTC on if it was not on */ ioaddr = pdata->ioaddr_rtc; sec = readb(ioaddr + RTC_SECONDS); @@ -221,11 +216,13 @@ static int __devinit ds1742_rtc_probe(st pdata->rtc = rtc; pdata->last_jiffies = jiffies; platform_set_drvdata(pdev, pdata); - ds1742_nvram_attr.size = max(ds1742_nvram_attr.size, - pdata->size_nvram); - ret = sysfs_create_bin_file(&pdev->dev.kobj, &ds1742_nvram_attr); - if (ret) + + ret = sysfs_create_bin_file(&pdev->dev.kobj, &pdata->nvram_attr); + if (ret) { + dev_err(&pdev->dev, "creating nvram file in sysfs failed\n"); goto out; + } + return 0; out: if (pdata->rtc) @@ -242,7 +239,7 @@ static int __devexit ds1742_rtc_remove(s { struct rtc_plat_data *pdata = platform_get_drvdata(pdev); - sysfs_remove_bin_file(&pdev->dev.kobj, &ds1742_nvram_attr); + sysfs_remove_bin_file(&pdev->dev.kobj, &pdata->nvram_attr); rtc_device_unregister(pdata->rtc); iounmap(pdata->ioaddr_nvram); release_mem_region(pdata->baseaddr, pdata->size); _ Patches currently in -mm which might be from ertbjerg@xxxxxxxxx are rtc-rtc-ds1742-nvram-attribute-fix.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html