[PATCH] fwts_acpica: fix segmentation fault by unlock mutex twice (LP: #1635502)

[Ivan Hu]

fix the pthread_mutex_unlock twice cause segment fault
Test 46 of 192: Test _OFF (Set resource off).
PASSED: Test 46, \_SB_.PCI0.PEG0.PEGP._OFF returned no values as expected.
Caught SIGNAL 11 (Segmentation fault), aborting.
Backtrace:
0x00007f09c3fc9dd4 /usr/local/lib/fwts/libfwts.so.1(+0xfdd4)
0x00007f09c3a1b4a0 /lib/x86_64-linux-gnu/libc.so.6(+0x354a0)
0x00007f09c3363960 /lib/x86_64-linux-gnu/libpthread.so.0(+0x12960)
0x00007f09c42196b0 /usr/local/lib/fwts/libfwtsacpica.so.1(fwts_acpica_sem_count_get+0x40)
0x000000000041efef fwts()
0x000000000041f195 fwts()
0x0000000000421210 fwts()
0x00007f09c3fcf441 /usr/local/lib/fwts/libfwts.so.1(+0x15441)
0x00007f09c3fd0bc3 /usr/local/lib/fwts/libfwts.so.1(fwts_framework_args+0x793)
0x000000000040519a fwts()
0x00007f09c3a06830 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)
0x0000000000406079 fwts()

Signed-off-by: Ivan Hu <ivan.hu at canonical.com>
---
 src/acpica/fwts_acpica.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/acpica/fwts_acpica.c b/src/acpica/fwts_acpica.c
index ce21911..f0a44e0 100644
--- a/src/acpica/fwts_acpica.c
+++ b/src/acpica/fwts_acpica.c
@@ -143,7 +143,6 @@ void fwts_acpica_sem_count_get(int *acquired, int *released)
 
 			pthread_mutex_lock(&mutex_thread_info);
 			threads[i].used = false;
-			pthread_mutex_unlock(&mutex_thread_info);
 		}
 		pthread_mutex_unlock(&mutex_thread_info);
 	}
-- 
1.9.1