From 8503f9016f01d01b4c3a1e8c9848d4f564e71bd1 Mon Sep 17 00:00:00 2001 From: Rupesh Gujare Date: Wed, 28 Aug 2013 12:43:16 +0100 Subject: [PATCH] staging: ozwpan: Return error, if PD is not connected. Return error if we receive write(), while PD is not connected. Signed-off-by: Rupesh Gujare Signed-off-by: Greg Kroah-Hartman --- drivers/staging/ozwpan/ozcdev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/ozwpan/ozcdev.c b/drivers/staging/ozwpan/ozcdev.c index 50722eab7e1f..6ccb64fb0786 100644 --- a/drivers/staging/ozwpan/ozcdev.c +++ b/drivers/staging/ozwpan/ozcdev.c @@ -162,6 +162,8 @@ static ssize_t oz_cdev_write(struct file *filp, const char __user *buf, spin_unlock_bh(&g_cdev.lock); if (pd == NULL) return -ENXIO; + if (!(pd->state & OZ_PD_S_CONNECTED)) + return -EAGAIN; eb = &pd->elt_buff; ei = oz_elt_info_alloc(eb); if (ei == NULL) { -- 2.34.1