summaryrefslogtreecommitdiffstats
path: root/drivers/rtc/rtc-ds1742.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/rtc/rtc-ds1742.c')
-rw-r--r--drivers/rtc/rtc-ds1742.c31
1 files changed, 14 insertions, 17 deletions
diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
index 8bc8501bffc8..09249459e9a4 100644
--- a/drivers/rtc/rtc-ds1742.c
+++ b/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 kobject *kobj,
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(struct platform_device *pdev)
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(struct platform_device *pdev)
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(struct platform_device *pdev)
{
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);