ALSA: emu10k1: correctly handling failed thread creation

Since kthread_create can be failed, it needs to check
whether error occurred and return error code.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c
index 28e2f8b42f5e8e4e7f3aaaaa88f45d6834b02591..891453451543102994b7912584f00483b2c472f0 100644 (file)
--- a/sound/pci/emu10k1/emu10k1_main.c
+++ b/sound/pci/emu10k1/emu10k1_main.c
@@ -1141,6 +1141,14 @@ static int snd_emu10k1_emu1010_init(struct snd_emu10k1 *emu)
                emu->emu1010.firmware_thread =
                        kthread_create(emu1010_firmware_thread, emu,
                                       "emu1010_firmware");
+               if (IS_ERR(emu->emu1010.firmware_thread)) {
+                       err = PTR_ERR(emu->emu1010.firmware_thread);
+                       emu->emu1010.firmware_thread = NULL;
+                       dev_info(emu->card->dev,
+                                       "emu1010: Creating thread failed\n");
+                       return err;
+               }
+
                wake_up_process(emu->emu1010.firmware_thread);
        }