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

Kconfig

goldfish: refactor goldfish platform configs

2016-01-28 23:34:36 -08:00

Makefile

MIPS: Loongson-3: Add CPU Hwmon platform driver

2015-04-01 17:22:17 +02:00