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ALSA: echoaudio: use after free on error 

There are some places where we dereference "chip" in the error message
but we've already freed it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Dan Carpenter 2014-03-05 14:07:15 +03:00 committed by Takashi Iwai
parent 7cf9bb21ee
commit 4f50b41fa3
1 changed files with 4 additions and 4 deletions
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8
sound/pci/echoaudio/echoaudio.c
View File

@ -1990,8 +1990,8 @@ static int snd_echo_create(struct snd_card *card,
if ((chip->iores = request_mem_region(chip->dsp_registers_phys, sz,
ECHOCARD_NAME)) == NULL) {
snd_echo_free(chip);
dev_err(chip->card->dev, "cannot get memory region\n");
snd_echo_free(chip);
return -EBUSY;
}
chip->dsp_registers = (volatile u32 __iomem *)
@ -1999,8 +1999,8 @@ static int snd_echo_create(struct snd_card *card,
if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
snd_echo_free(chip);
dev_err(chip->card->dev, "cannot grab irq\n");
snd_echo_free(chip);
return -EBUSY;
}
chip->irq = pci->irq;
@ -2012,8 +2012,8 @@ static int snd_echo_create(struct snd_card *card,
if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
sizeof(struct comm_page),
&chip->commpage_dma_buf) < 0) {
snd_echo_free(chip);
dev_err(chip->card->dev, "cannot allocate the comm page\n");
snd_echo_free(chip);
return -ENOMEM;
}
chip->comm_page_phys = chip->commpage_dma_buf.addr;
@ -2291,8 +2291,8 @@ static int snd_echo_resume(struct device *dev)
if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
snd_echo_free(chip);
dev_err(chip->card->dev, "cannot grab irq\n");
snd_echo_free(chip);
return -EBUSY;
}
chip->irq = pci->irq;