On Sat, Oct 7, 2017 at 5:33 AM, <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx> wrote: > From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx> > > Currently, update_no_reboot_bit() function implemented in this driver > uses mutex_lock() to protect its register updates. But this function is > called with in atomic context in iTCO_wdt_start() and iTCO_wdt_stop() > functions in iTCO_wdt.c driver, which in turn causes "sleeping into > atomic context" issue. This patch fixes this issue by replacing the > mutex_lock() with spin_lock() to protect the GCR read/write/update APIs. > > Fixes: 9d855d4 ("platform/x86: intel_pmc_ipc: Fix iTCO_wdt GCS memory > mapping failure") I think it need to be a one line. Does it apply on top of v4.14-rc3 ? Btw, this patch should be first in the series. -- With Best Regards, Andy Shevchenko