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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-19 02:56:25 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-19 02:56:25 +0400 |
| commit | 73f1f5dd3ee3ec6e20768d831d9759b0330fad0e (patch) | |
| tree | 22f8498c47467f468dce6c3bca0eb1f3a0c9ade0 /drivers | |
| parent | 30a08bf2d31d275c6fc71dd1811342777e95c831 (diff) | |
| parent | 93c2d656c7120e29de8df5bc17bb2a97664104e9 (diff) | |
| download | linux-73f1f5dd3ee3ec6e20768d831d9759b0330fad0e.tar.xz | |
Merge branch 'akpm' (Andrew's patch-bomb)
Merge misc fixes from Andrew Morton.
* emailed from Andrew Morton <akpm@linux-foundation.org>: (4 patches)
frv: delete incorrect task prototypes causing compile fail
slub: missing test for partial pages flush work in flush_all()
fs, proc: fix ABBA deadlock in case of execution attempt of map_files/ entries
drivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/rtc/rtc-pl031.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index 684ef4bbfce4..f027c063fb20 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -312,6 +312,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id) int ret; struct pl031_local *ldata; struct rtc_class_ops *ops = id->data; + unsigned long time; ret = amba_request_regions(adev, NULL); if (ret) @@ -343,6 +344,23 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id) writel(readl(ldata->base + RTC_CR) | RTC_CR_CWEN, ldata->base + RTC_CR); + /* + * On ST PL031 variants, the RTC reset value does not provide correct + * weekday for 2000-01-01. Correct the erroneous sunday to saturday. + */ + if (ldata->hw_designer == AMBA_VENDOR_ST) { + if (readl(ldata->base + RTC_YDR) == 0x2000) { + time = readl(ldata->base + RTC_DR); + if ((time & + (RTC_MON_MASK | RTC_MDAY_MASK | RTC_WDAY_MASK)) + == 0x02120000) { + time = time | (0x7 << RTC_WDAY_SHIFT); + writel(0x2000, ldata->base + RTC_YLR); + writel(time, ldata->base + RTC_LR); + } + } + } + ldata->rtc = rtc_device_register("pl031", &adev->dev, ops, THIS_MODULE); if (IS_ERR(ldata->rtc)) { |