AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/platform
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Kuppuswamy Sathyanarayanan 6687aeb9cd platform/x86: intel_pmc_ipc: Use spin_lock to protect GCR updates 
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")
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kupuswamy@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2017-10-23 20:16:36 +03:00
..
chrome dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
goldfish Merge 4.12-rc5 into char-misc-next 2017-06-12 08:18:10 +02:00
mips MIPS: Loongson-3: Support 4 packages in CPU Hwmon driver 2017-06-29 02:42:22 +02:00
olpc platform/olpc: Make ec explicitly non-modular 2016-08-28 22:31:52 -07:00
x86 platform/x86: intel_pmc_ipc: Use spin_lock to protect GCR updates 2017-10-23 20:16:36 +03:00
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