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| author | Heiner Kallweit <hkallweit1@gmail.com> | 2015-12-22 19:09:05 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-01-12 21:05:16 +0100 |
| commit | de65360be0239a63268de589c4189f8ee52dad6c (patch) | |
| tree | c7fe0f3b2d33e3e487b6e875826198dae7574ed8 | |
| parent | 3567eb6af614dac436c4b16a8d426f9faed639b3 (diff) | |
| download | lwn-de65360be0239a63268de589c4189f8ee52dad6c.tar.gz lwn-de65360be0239a63268de589c4189f8ee52dad6c.zip | |
ALSA: hda_intel: add card number to irq description
Currently the info in /proc/interrupts doesn't allow to figure out which
interrupt belongs to which card (HDMI, PCH, ..).
Therefore add card details to the interrupt description.
With the patch the info in /proc/interrupts looks like this:
PCI-MSI 442368-edge snd_hda_intel:card1
PCI-MSI 49152-edge snd_hda_intel:card0
NOTE: this patch adds the new irq_descr field snd_card struct that is
filled automatically at a card object creation. This can be used
generically for other drivers as well. The changes for others will
follow later -- tiwai
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | include/sound/core.h | 1 | ||||
| -rw-r--r-- | sound/core/init.c | 3 | ||||
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 2 |
3 files changed, 5 insertions, 1 deletions
diff --git a/include/sound/core.h b/include/sound/core.h index cdfecafff0f4..31079ea5e484 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -99,6 +99,7 @@ struct snd_card { char driver[16]; /* driver name */ char shortname[32]; /* short name of this soundcard */ char longname[80]; /* name of this soundcard */ + char irq_descr[32]; /* Interrupt description */ char mixername[80]; /* mixer name */ char components[128]; /* card components delimited with space */ diff --git a/sound/core/init.c b/sound/core/init.c index 20f37fb3800e..6bda8436d765 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -268,6 +268,9 @@ int snd_card_new(struct device *parent, int idx, const char *xid, if (err < 0) goto __error; + snprintf(card->irq_descr, sizeof(card->irq_descr), "%s:%s", + dev_driver_string(card->dev), dev_name(&card->card_dev)); + /* the control interface cannot be accessed from the user space until */ /* snd_cards_bitmask and snd_cards are set with snd_card_register */ err = snd_ctl_create(card); diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 83800ac6ebd7..c0bef11afa7e 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -725,7 +725,7 @@ static int azx_acquire_irq(struct azx *chip, int do_disconnect) if (request_irq(chip->pci->irq, azx_interrupt, chip->msi ? 0 : IRQF_SHARED, - KBUILD_MODNAME, chip)) { + chip->card->irq_descr, chip)) { dev_err(chip->card->dev, "unable to grab IRQ %d, disabling device\n", chip->pci->irq); |