[PATCH] ACPI / debugger: Fix an issue a flag is modified without locking

[Lv Zheng]

There is one line of code, executed out of locking due to rebase mistakes.
This patch fixes this issue.

Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx>
---
 drivers/acpi/acpi_dbg.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/acpi_dbg.c b/drivers/acpi/acpi_dbg.c
index 381beb2..fa18bd0 100644
--- a/drivers/acpi/acpi_dbg.c
+++ b/drivers/acpi/acpi_dbg.c
@@ -516,10 +516,10 @@ static int acpi_aml_open(struct inode *inode, struct file *file)
 			ret = -EINVAL;
 			goto err_lock;
 		}
-		acpi_aml_io.flags |= ACPI_AML_OPENED;
 		pr_debug("Debugger thread initialized.\n");
 
 		mutex_lock(&acpi_aml_io.lock);
+		acpi_aml_io.flags |= ACPI_AML_OPENED;
 		acpi_aml_io.out_crc.head = acpi_aml_io.out_crc.tail = 0;
 		acpi_aml_io.in_crc.head = acpi_aml_io.in_crc.tail = 0;
 		pr_debug("Debugger interface opened.\n");
-- 
1.7.10

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/