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| author | Zhouyang Jia <jiazhouyang09@gmail.com> | 2018-06-14 21:51:46 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-06-14 18:01:06 +0200 |
| commit | 4a23fc8cc068ee5adfb9939d86baaf0f3e180df6 (patch) | |
| tree | e1cc3bee325e12ff247633bcc276d54ee4c706a1 | |
| parent | 41538f2db1eaa8613ffb3cd0c92a57ace6c0a5f2 (diff) | |
| download | lwn-4a23fc8cc068ee5adfb9939d86baaf0f3e180df6.tar.gz lwn-4a23fc8cc068ee5adfb9939d86baaf0f3e180df6.zip | |
ALSA: lx6464es: add error handling for pci_ioremap_bar
When pci_ioremap_bar fails, the lack of error-handling code may
cause unexpected results.
This patch adds error-handling code after calling pci_ioremap_bar.
Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/pci/lx6464es/lx6464es.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/pci/lx6464es/lx6464es.c b/sound/pci/lx6464es/lx6464es.c index 9655b08a1c52..6c85f13ab23f 100644 --- a/sound/pci/lx6464es/lx6464es.c +++ b/sound/pci/lx6464es/lx6464es.c @@ -1016,6 +1016,10 @@ static int snd_lx6464es_create(struct snd_card *card, /* dsp port */ chip->port_dsp_bar = pci_ioremap_bar(pci, 2); + if (!chip->port_dsp_bar) { + dev_err(card->dev, "cannot remap PCI memory region\n"); + goto remap_pci_failed; + } err = request_threaded_irq(pci->irq, lx_interrupt, lx_threaded_irq, IRQF_SHARED, KBUILD_MODNAME, chip); @@ -1055,6 +1059,9 @@ device_new_failed: free_irq(pci->irq, chip); request_irq_failed: + iounmap(chip->port_dsp_bar); + +remap_pci_failed: pci_release_regions(pci); request_regions_failed: |