From afe6f1eeb08f85e57f0a02b71efb5a0839606aac Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 2 Jul 2020 10:41:02 -0700 Subject: bus: ti-sysc: Fix sleeping function called from invalid context for RTC quirk With CONFIG_DEBUG_ATOMIC_SLEEP enabled we can see the following with RTC probe: BUG: sleeping function called from invalid context at drivers/bus/ti-sysc.c:1736 ... (sysc_quirk_rtc) from [] (sysc_write_sysconfig+0x1c/0x60) (sysc_write_sysconfig) from [] (sysc_enable_module+0x11c/0x274) (sysc_enable_module) from [] (sysc_probe+0xe9c/0x1380) (sysc_probe) from [] (platform_drv_probe+0x48/0x98) Fixes: e8639e1c986a ("bus: ti-sysc: Handle module unlock quirk needed for some RTC") Signed-off-by: Tony Lindgren --- drivers/bus/ti-sysc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/bus') diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c index 2ce8612f13a9..f5a533ce97f9 100644 --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -1727,8 +1727,8 @@ static void sysc_quirk_rtc(struct sysc *ddata, bool lock) local_irq_save(flags); /* RTC_STATUS BUSY bit may stay active for 1/32768 seconds (~30 usec) */ - error = readl_poll_timeout(ddata->module_va + 0x44, val, - !(val & BIT(0)), 100, 50); + error = readl_poll_timeout_atomic(ddata->module_va + 0x44, val, + !(val & BIT(0)), 100, 50); if (error) dev_warn(ddata->dev, "rtc busy timeout\n"); /* Now we have ~15 microseconds to read/write various registers */ -- cgit v1.2.3