ALSA: hdspm: don't disable if not enabled

hdspm wants to disable a not enabled pci device, which makes kernel
throw a warning. Make sure the device is enabled before calling disable.

[    1.786391] snd_hdspm 0000:00:03.0: disabling already-disabled device
[    1.786400] WARNING: CPU: 0 PID: 182 at drivers/pci/pci.c:2146 pci_disable_device+0x91/0xb0
[    1.795181] Call Trace:
[    1.795320]  snd_hdspm_card_free+0x58/0xa0 [snd_hdspm]
[    1.795595]  release_card_device+0x4b/0x80 [snd]
[    1.795860]  device_release+0x3b/0xa0
[    1.796072]  kobject_put+0x94/0x1b0
[    1.796260]  put_device+0x13/0x20
[    1.796438]  snd_card_free+0x61/0x90 [snd]
[    1.796659]  snd_hdspm_probe+0x97b/0x1440 [snd_hdspm]

Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20210321153840.378226-3-ztong0001@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index b667115..6edc31b 100644 (file)
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -6884,7 +6884,8 @@ static int snd_hdspm_free(struct hdspm * hdspm)
        if (hdspm->port)
                pci_release_regions(hdspm->pci);
 
-       pci_disable_device(hdspm->pci);
+       if (pci_is_enabled(hdspm->pci))
+               pci_disable_device(hdspm->pci);
        return 0;
 }