From: Clemens Ladisch <clemens@ladisch.de>
To: Torstein Hegge <hegge@resisty.net>
Cc: alsa-devel@alsa-project.org
Subject: Re: [PATCH v4] ALSA: usb: Work around CM6631 sample rate change bug
Date: Fri, 22 Mar 2013 16:32:19 +0100 [thread overview]
Message-ID: <514C7983.40904@ladisch.de> (raw)
In-Reply-To: <20130319214531.GD7539@pvv.ntnu.no>
Torstein Hegge wrote:
> + if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
> + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
> + UAC2_CS_CONTROL_SAM_FREQ << 8,
> + snd_usb_ctrl_intf(chip) | (clock << 8),
> + data, sizeof(data))) < 0) {
> + snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n",
> + dev->devnum, iface, fmt->altsetting);
> + return err;
> + }
This code requires that all devices allow reading the sample rate.
When you cannot read the current rate, just assume it needs to be set.
Regards,
Clemens
next prev parent reply other threads:[~2013-03-22 15:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-19 21:45 [PATCH v4] ALSA: usb: Work around CM6631 sample rate change bug Torstein Hegge
2013-03-22 15:32 ` Clemens Ladisch [this message]
2013-03-24 20:46 ` Torstein Hegge
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=514C7983.40904@ladisch.de \
--to=clemens@ladisch.de \
--cc=alsa-devel@alsa-project.org \
--cc=hegge@resisty.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.