[PATCH 12/12] usbnet: make device out of suspend before calling usbnet_read/write_cmd
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STALE5123d
From: Ming Lei <hidden>
Date: 2012-10-02 06:52:59
Subsystem:
networking drivers, the rest, usb "usbnet" driver framework, usb networking drivers · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Oliver Neukum
This patche gets the runtime PM reference count before calling usb_control_msg, and puts it after completion of the usb_control_msg, so that the usb control message can always be sent to one active device. Signed-off-by: Ming Lei <redacted> --- drivers/net/usb/usbnet.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 3b51554..3f4bc69 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c@@ -1609,9 +1609,11 @@ int usbnet_read_cmd(struct usbnet *dev, u8 cmd, u8 reqtype, goto out; } + usb_autopm_get_interface(dev->intf); err = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), cmd, reqtype, value, index, buf, size, USB_CTRL_GET_TIMEOUT); + usb_autopm_put_interface(dev->intf); if (err > 0 && err <= size) memcpy(data, buf, err); kfree(buf);
@@ -1636,9 +1638,11 @@ int usbnet_write_cmd(struct usbnet *dev, u8 cmd, u8 reqtype, goto out; } + usb_autopm_get_interface(dev->intf); err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), cmd, reqtype, value, index, buf, size, USB_CTRL_SET_TIMEOUT); + usb_autopm_put_interface(dev->intf); kfree(buf); out:
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1.7.9.5