ALSA: echoaudio: check kmalloc() result

If kmalloc() fails exit with -ENOMEM.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Ack-by: Giuliano Pochini <pochini@shiny.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 668a5ec04499..20763dd03fa0 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -2250,6 +2250,8 @@ static int snd_echo_resume(struct pci_dev *pci)
         DE_INIT(("resume start\n"));
         pci_restore_state(pci);
         commpage_bak = kmalloc(sizeof(struct echoaudio), GFP_KERNEL);
+        if (commpage_bak == NULL)
+                return -ENOMEM;
         commpage = chip->comm_page;
         memcpy(commpage_bak, commpage, sizeof(struct comm_page));