greybus: Add comment about the mode_switch_started flag

Add a comment to describe the purpose of the flag.

Suggested-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

diff --git a/drivers/staging/greybus/fw-management.c b/drivers/staging/greybus/fw-management.c
index 22dcad2ebc15470f671bd030dda75edc4e16d2a9..c9c28fc1549222ecb029f9598bd4fac352b33520 100644 (file)
--- a/drivers/staging/greybus/fw-management.c
+++ b/drivers/staging/greybus/fw-management.c
@@ -482,6 +482,11 @@ static int fw_mgmt_ioctl(struct fw_mgmt *fw_mgmt, unsigned int cmd,
                        return -EPERM;
                }
 
+               /*
+                * Disallow new ioctls as the fw-core bundle driver is going to
+                * get disconnected soon and the character device will get
+                * removed.
+                */
                fw_mgmt->mode_switch_started = true;
 
                ret = gb_interface_request_mode_switch(fw_mgmt->connection->intf);