linux-kernel - Re: [PATCH v2] sound: usb: mixer: increase control transfer timeout

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Message-ID: <20110829130014.GB13925@legolas.emea.dhcp.ti.com>
Date:	Mon, 29 Aug 2011 16:00:14 +0300
From:	Felipe Balbi <balbi@...com>
To:	Jassi Brar <jassisinghbrar@...il.com>
Cc:	Felipe Balbi <balbi@...com>, Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.de>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org,
	Linux USB Mailing List <linux-usb@...r.kernel.org>,
	clemens@...isch.de
Subject: Re: [PATCH v2] sound: usb: mixer: increase control transfer timeout

Hi,

On Mon, Aug 29, 2011 at 06:07:30PM +0530, Jassi Brar wrote:
> On Mon, Aug 29, 2011 at 6:01 PM, Felipe Balbi <balbi@...com> wrote:
> > 100ms might not be enough for slower devices. Increasing
> > timeout to 1000ms doesn't seem like overkill.
> >
> > Signed-off-by: Felipe Balbi <balbi@...com>
> > ---
> >
> > Changes since v1:
> >  . Increase all 100ms timeout to 1000ms
> >
> >  sound/usb/mixer.c        |    4 ++--
> >  sound/usb/mixer_quirks.c |   10 +++++-----
> >  2 files changed, 7 insertions(+), 7 deletions(-)
> >
> > diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
> > index cdd19d7..1c9d443 100644
> > --- a/sound/usb/mixer.c
> > +++ b/sound/usb/mixer.c
> > @@ -296,7 +296,7 @@ static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int v
> >                if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request,
> >                                    USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
> >                                    validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
> > -                                   buf, val_len, 100) >= val_len) {
> > +                                   buf, val_len, 1000) >= val_len) {
> >                        *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
> >                        snd_usb_autosuspend(cval->mixer->chip);
> >                        return 0;
> > @@ -445,7 +445,7 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
> >                                    usb_sndctrlpipe(chip->dev, 0), request,
> >                                    USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
> >                                    validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
> > -                                   buf, val_len, 100) >= 0) {
> > +                                   buf, val_len, 1000) >= 0) {
> >                        snd_usb_autosuspend(chip);
> >                        return 0;
> >                }
> > diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
> > index 3d0f487..7c41399 100644
> > --- a/sound/usb/mixer_quirks.c
> > +++ b/sound/usb/mixer_quirks.c
> > @@ -190,18 +190,18 @@ static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_e
> >                err = snd_usb_ctl_msg(mixer->chip->dev,
> >                              usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
> >                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
> > -                             !value, 0, NULL, 0, 100);
> > +                             !value, 0, NULL, 0, 1000);
> >        /* USB X-Fi S51 Pro */
> >        if (mixer->chip->usb_id == USB_ID(0x041e, 0x30df))
> >                err = snd_usb_ctl_msg(mixer->chip->dev,
> >                              usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
> >                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
> > -                             !value, 0, NULL, 0, 100);
> > +                             !value, 0, NULL, 0, 1000);
> >        else
> >                err = snd_usb_ctl_msg(mixer->chip->dev,
> >                              usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
> >                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
> > -                             value, index + 2, NULL, 0, 100);
> > +                             value, index + 2, NULL, 0, 1000);
> >        if (err < 0)
> >                return err;
> >        mixer->audigy2nx_leds[index] = value;
> > @@ -299,7 +299,7 @@ static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
> >                                      usb_rcvctrlpipe(mixer->chip->dev, 0),
> >                                      UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
> >                                      USB_RECIP_INTERFACE, 0,
> > -                                     jacks[i].unitid << 8, buf, 3, 100);
> > +                                     jacks[i].unitid << 8, buf, 3, 1000);
> >                if (err == 3 && (buf[0] == 3 || buf[0] == 6))
> >                        snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
> >                else
> > @@ -332,7 +332,7 @@ static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
> >        err = snd_usb_ctl_msg(mixer->chip->dev,
> >                              usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
> >                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
> > -                             50, 0, &new_status, 1, 100);
> > +                             50, 0, &new_status, 1, 1000);
> 
> How about also converting to use a local define for timeout value ?

should it be part of another patch ? The current code has no defines at
all and $SUBJECT is just changing what's currently there to another
value.

-- 
balbi

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