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thinkpad-acpi: don't fail to load the entire module due to ALSA problems 

If we cannot create the ALSA mixer, it is a good reason to fail to
load the volume subdriver, and not to fail to load the entire module.

While at it, add more debugging messages, as the error paths are being
used a lot more than I'd expect, and it is failing to set up the ALSA
mixer on a number of ThinkPads.

Reported-by: Peter Jordan <usernetwork@gmx.info>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Henrique de Moraes Holschuh 2009-12-26 22:52:14 -02:00 committed by Len Brown
parent ead510cebc
commit 74c75c1848
1 changed files with 18 additions and 13 deletions
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31
drivers/platform/x86/thinkpad_acpi.c
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@ -6705,10 +6705,11 @@ static int __init volume_create_alsa_mixer(void)
rc = snd_card_create(alsa_index, alsa_id, THIS_MODULE,
sizeof(struct tpacpi_alsa_data), &card);
if (rc < 0)
return rc;
if (!card)
return -ENOMEM;
if (rc < 0 || !card) {
printk(TPACPI_ERR
"Failed to create ALSA card structures: %d\n", rc);
return 1;
}
BUG_ON(!card->private_data);
data = card->private_data;
@ -6741,8 +6742,9 @@ static int __init volume_create_alsa_mixer(void)
rc = snd_ctl_add(card, ctl_vol);
if (rc < 0) {
printk(TPACPI_ERR
"Failed to create ALSA volume control\n");
goto err_out;
"Failed to create ALSA volume control: %d\n",
rc);
goto err_exit;
}
data->ctl_vol_id = &ctl_vol->id;
}
@ -6750,22 +6752,25 @@ static int __init volume_create_alsa_mixer(void)
ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
rc = snd_ctl_add(card, ctl_mute);
if (rc < 0) {
printk(TPACPI_ERR "Failed to create ALSA mute control\n");
goto err_out;
printk(TPACPI_ERR "Failed to create ALSA mute control: %d\n",
rc);
goto err_exit;
}
data->ctl_mute_id = &ctl_mute->id;
snd_card_set_dev(card, &tpacpi_pdev->dev);
rc = snd_card_register(card);
err_out:
if (rc < 0) {
snd_card_free(card);
card = NULL;
printk(TPACPI_ERR "Failed to register ALSA card: %d\n", rc);
goto err_exit;
}
alsa_card = card;
return rc;
return 0;
err_exit:
snd_card_free(card);
return 1;
}
#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */