greybus: es2: Fix apb_log null pointer exception

Read on apb_log causes null pointer exception due to the missing es2
device pointer passing to the debugfs.

Testing done:
- Enable apb_log and cat it

Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c
index 239adf7..9e06efb 100644 (file)
--- a/drivers/staging/greybus/es2.c
+++ b/drivers/staging/greybus/es2.c
@@ -842,7 +842,7 @@ static void usb_log_enable(struct es2_ap_dev *es2)
                return;
        /* XXX We will need to rename this per APB */
        es2->apb_log_dentry = debugfs_create_file("apb_log", S_IRUGO,
-                                               gb_debugfs_get(), NULL,
+                                               gb_debugfs_get(), es2,
                                                &apb_log_fops);
 }