[PATCH 09/31] ACPICA: Tables: Don't release ACPI_MTX_TABLES in acpi_tb_install_standard_table().

From: Lv Zheng
Date: Sun Apr 12 2015 - 23:49:21 EST

From: Octavian Purdila <octavian.purdila@xxxxxxxxx>

ACPICA commit c70434d4da13e65b6163c79a5aa16b40193631c7

ACPI_MTX_TABLES is acquired and released by the callers of
acpi_tb_install_standard_table() so releasing it in the function itself is
causing the following error in Linux kernel if the table is reloaded:

ACPI Error: Mutex [0x2] is not acquired, cannot release (20141107/utmutex-321)
Call Trace:
[<ffffffff81b0bd48>] dump_stack+0x4f/0x7b
[<ffffffff81546bf5>] acpi_ut_release_mutex+0x47/0x67
[<ffffffff81544357>] acpi_load_table+0x73/0xcb

Link: https://github.com/acpica/acpica/commit/c70434d4
Signed-off-by: Octavian Purdila <octavian.purdila@xxxxxxxxx>
Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx>
Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
Cc: 3.16+ <stable@xxxxxxxxxxxxxxx> # 3.16+
drivers/acpi/acpica/tbinstal.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index 0d184c4..7e69bc7 100644
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -349,7 +349,6 @@ acpi_tb_install_standard_table(acpi_physical_address address,
*table_index = i;
- (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

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