[PATCH] staging: dgnc: check return value of kzalloc

[Gujulan Elango, Hari Prasath (H.)]

check return value of kzalloc and return error if it fails.

Signed-off-by: Gujulan Elango Hari Prasath <hguju...@visteon.com>
---
 drivers/staging/dgnc/dgnc_tty.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/staging/dgnc/dgnc_tty.c b/drivers/staging/dgnc/dgnc_tty.c
index ce4187f..2397c66 100644
--- a/drivers/staging/dgnc/dgnc_tty.c
+++ b/drivers/staging/dgnc/dgnc_tty.c
@@ -316,6 +316,8 @@ int dgnc_tty_init(struct dgnc_board *brd)
                         * interrupt context, and there are no locks held.
                         */
                        brd->channels[i] = kzalloc(sizeof(*brd->channels[i]), 
GFP_KERNEL);
+                       if (!brd->channels[i])
+                               return -ENOMEM;
                }
        }
 
@@ -1126,10 +1128,16 @@ static int dgnc_tty_open(struct tty_struct *tty, struct 
file *file)
 
        if (!ch->ch_rqueue)
                ch->ch_rqueue = kzalloc(RQUEUESIZE, GFP_KERNEL);
+               if (!ch->ch_rqueue)
+                       return -ENOMEM;
        if (!ch->ch_equeue)
                ch->ch_equeue = kzalloc(EQUEUESIZE, GFP_KERNEL);
+               if (!ch->ch_equeue)
+                       return -ENOMEM;
        if (!ch->ch_wqueue)
                ch->ch_wqueue = kzalloc(WQUEUESIZE, GFP_KERNEL);
+               if (!ch->ch_wqueue)
+                       return -ENOMEM;
 
        spin_lock_irqsave(&ch->ch_lock, flags);
 
-- 
1.9.1
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