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author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2015-05-07 14:26:34 -0700 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2015-05-12 14:13:20 +0200 |
commit | 2d94e5224e81c58986a8cf44a3bf4830ce5cb96e (patch) | |
tree | b12b410a0dc0fea939f8da807e8d83471bc1c111 /drivers/hid/hid-uclogic.c | |
parent | 5006c1052aafa01dab5b0e643b7dac755b41f3bb (diff) |
HID: hid-sensor-hub: Fix debug lock warning
When CONFIG_DEBUG_LOCK_ALLOC is defined, mutex magic is compared and
warned for (l->magic != l), here l is the address of mutex pointer.
In hid-sensor-hub as part of hsdev creation, a per hsdev mutex is
initialized during MFD cell creation. This hsdev, which contains, mutex
is part of platform data for the a cell. But platform_data is copied
in platform_device_add_data() in platform.c. This copy will copy the
whole hsdev structure including mutex. But once copied the magic
will no longer match. So when client driver call
sensor_hub_input_attr_get_raw_value, this will trigger mutex warning.
So to avoid this allocate mutex dynamically. This will be same even
after copy.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-uclogic.c')
0 files changed, 0 insertions, 0 deletions