ALSA: hda - Add NULL check to all PM ops in hda_intel.c
Since devptr can be NULL due to asynchronous probe, all PM ops should
have NULL checks at the beginning.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 8edcee5..387fc73 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -772,10 +772,15 @@
{
struct pci_dev *pci = to_pci_dev(dev);
struct snd_card *card = dev_get_drvdata(dev);
- struct azx *chip = card->private_data;
- struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
+ struct azx *chip;
+ struct hda_intel *hda;
struct azx_pcm *p;
+ if (!card)
+ return 0;
+
+ chip = card->private_data;
+ hda = container_of(chip, struct hda_intel, chip);
if (chip->disabled || hda->init_failed)
return 0;
@@ -806,9 +811,14 @@
{
struct pci_dev *pci = to_pci_dev(dev);
struct snd_card *card = dev_get_drvdata(dev);
- struct azx *chip = card->private_data;
- struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
+ struct azx *chip;
+ struct hda_intel *hda;
+ if (!card)
+ return 0;
+
+ chip = card->private_data;
+ hda = container_of(chip, struct hda_intel, chip);
if (chip->disabled || hda->init_failed)
return 0;
@@ -844,9 +854,14 @@
static int azx_runtime_suspend(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
- struct azx *chip = card->private_data;
- struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
+ struct azx *chip;
+ struct hda_intel *hda;
+ if (!card)
+ return 0;
+
+ chip = card->private_data;
+ hda = container_of(chip, struct hda_intel, chip);
if (chip->disabled || hda->init_failed)
return 0;
@@ -869,12 +884,17 @@
static int azx_runtime_resume(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
- struct azx *chip = card->private_data;
- struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
+ struct azx *chip;
+ struct hda_intel *hda;
struct hda_bus *bus;
struct hda_codec *codec;
int status;
+ if (!card)
+ return 0;
+
+ chip = card->private_data;
+ hda = container_of(chip, struct hda_intel, chip);
if (chip->disabled || hda->init_failed)
return 0;
@@ -910,9 +930,14 @@
static int azx_runtime_idle(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
- struct azx *chip = card->private_data;
- struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
+ struct azx *chip;
+ struct hda_intel *hda;
+ if (!card)
+ return 0;
+
+ chip = card->private_data;
+ hda = container_of(chip, struct hda_intel, chip);
if (chip->disabled || hda->init_failed)
return 0;