diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-07 18:55:26 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-07 18:55:26 +0100 |
| commit | 814daadbf09a364ec22f5aba769e01d8fa339c31 (patch) | |
| tree | 14dec42bb5c344847e3c09c31e8e8ad4745582f4 /drivers | |
| parent | Merge tag 'x86_urgent_for_v5.11_rc7' of git://git.kernel.org/pub/scm/linux/ke... (diff) | |
| parent | ntp: Use freezable workqueue for RTC synchronization (diff) | |
| download | linux-814daadbf09a364ec22f5aba769e01d8fa339c31.tar.xz linux-814daadbf09a364ec22f5aba769e01d8fa339c31.zip | |
Merge tag 'timers_urgent_for_v5.11_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Borislav Petkov:
"Two more timers-related fixes for v5.11:
- Use a freezable workqueue for RTC sync because the sync can happen
at any time and trigger suspend assertion checks in the i2c
subsystem.
- Correct a previous RTC validation change to check only bit 6 in
register D because some Intel machines use bits 0-5"
* tag 'timers_urgent_for_v5.11_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
ntp: Use freezable workqueue for RTC synchronization
rtc: mc146818: Dont test for bit 0-5 in Register D
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/rtc/rtc-cmos.c | 4 | ||||
| -rw-r--r-- | drivers/rtc/rtc-mc146818-lib.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index 68a9ac6f2fe1..a701dae653c4 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -805,8 +805,8 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) spin_lock_irq(&rtc_lock); - /* Ensure that the RTC is accessible. Bit 0-6 must be 0! */ - if ((CMOS_READ(RTC_VALID) & 0x7f) != 0) { + /* Ensure that the RTC is accessible. Bit 6 must be 0! */ + if ((CMOS_READ(RTC_VALID) & 0x40) != 0) { spin_unlock_irq(&rtc_lock); dev_warn(dev, "not accessible\n"); retval = -ENXIO; diff --git a/drivers/rtc/rtc-mc146818-lib.c b/drivers/rtc/rtc-mc146818-lib.c index f83c13818af3..dcfaf09946ee 100644 --- a/drivers/rtc/rtc-mc146818-lib.c +++ b/drivers/rtc/rtc-mc146818-lib.c @@ -21,8 +21,8 @@ unsigned int mc146818_get_time(struct rtc_time *time) again: spin_lock_irqsave(&rtc_lock, flags); - /* Ensure that the RTC is accessible. Bit 0-6 must be 0! */ - if (WARN_ON_ONCE((CMOS_READ(RTC_VALID) & 0x7f) != 0)) { + /* Ensure that the RTC is accessible. Bit 6 must be 0! */ + if (WARN_ON_ONCE((CMOS_READ(RTC_VALID) & 0x40) != 0)) { spin_unlock_irqrestore(&rtc_lock, flags); memset(time, 0xff, sizeof(*time)); return 0; |