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linux-stable/drivers/hwtracing
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Alexander Shishkin ed5207afc5 intel_th: msu: Prevent freeing buffers while locked windows exist 
We already prevent freeing buffers via sysfs interface in case there are
existing users or if trace is active. Treat the existence of locked windows
similarly and return -EBUSY on attempts to free the buffer. When the last
window is unlocked, the freeing will succeed.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20190705141425.19894-5-alexander.shishkin@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-25 13:03:19 +02:00
..
coresight coresight: Make the coresight_device_fwnode_match declaration's fwnode parameter const 2019-07-12 14:42:05 -07:00
intel_th intel_th: msu: Prevent freeing buffers while locked windows exist 2019-07-25 13:03:19 +02:00
stm treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00