Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1661724

[PATCH 3/3] sound: usb: allow interfaces that the driver claims to autosuspend

Show all headers | View raw

From: Yueyao Zhu <yueyao@google.com>

Instead of calling usb_enable_autosuspend() to change the configuration
of a USB device as an interface driver, enable autosuspend for every
interfaces that the driver claims.

Signed-off-by: Yueyao Zhu <yueyao@google.com>
---
 sound/usb/card.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/usb/card.c b/sound/usb/card.c
index 6640277a725b..79bec2883740 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -184,6 +184,7 @@ static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int int
 			return -EINVAL;
 		}
 		usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
+		usb_allow_interface_autosuspend(iface);
 
 		return 0;
 	}
@@ -206,6 +207,7 @@ static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int int
 	if (! snd_usb_parse_audio_interface(chip, interface)) {
 		usb_set_interface(dev, interface, 0); /* reset the current interface */
 		usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
+		usb_allow_interface_autosuspend(iface);
 	}
 
 	return 0;
@@ -618,6 +620,7 @@ static int usb_audio_probe(struct usb_interface *intf,
 	usb_chip[chip->index] = chip;
 	chip->num_interfaces++;
 	usb_set_intfdata(intf, chip);
+	usb_allow_interface_autosuspend(intf);
 	atomic_dec(&chip->active);
 	mutex_unlock(&register_mutex);
 	return 0;
-- 
2.13.0.506.g27d5fe0cd-goog

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH 0/3] USB: add API for interface driver to vote for autosuspend Yueyao Zhu <yueyao.zhu@gmail.com> - 2017-06-09 00:00 +0200
  [PATCH 3/3] sound: usb: allow interfaces that the driver claims to autosuspend Yueyao Zhu <yueyao.zhu@gmail.com> - 2017-06-09 00:00 +0200
  [PATCH 2/3] HID: usbhid: enable autosuspend for devices whose ... Yueyao Zhu <yueyao.zhu@gmail.com> - 2017-06-09 00:10 +0200
  Re: [PATCH 0/3] USB: add API for interface driver to vote for  autosuspend Alan Stern <stern@rowland.harvard.edu> - 2017-06-09 17:00 +0200

csiph-web