diff options
| author | Ingo Molnar <mingo@elte.hu> | 2010-04-23 11:10:28 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-04-23 11:10:30 +0200 |
| commit | 70bce3ba77540ebe77b8c0e1ac38d281a23fbb5e (patch) | |
| tree | 34b09a49228f0949ff49dce66a433b0dfd83a2dc /drivers/usb/misc/usbsevseg.c | |
| parent | 6eca8cc35b50af1037bc919106dd6dd332c959c2 (diff) | |
| parent | d5a30458a90597915977f06e79406b664a41b8ac (diff) | |
Merge branch 'linus' into perf/core
Merge reason: merge the latest fixes, update to latest -rc.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/usb/misc/usbsevseg.c')
| -rw-r--r-- | drivers/usb/misc/usbsevseg.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/usb/misc/usbsevseg.c b/drivers/usb/misc/usbsevseg.c index a9555cb901a1..de8ef945b536 100644 --- a/drivers/usb/misc/usbsevseg.c +++ b/drivers/usb/misc/usbsevseg.c @@ -49,6 +49,7 @@ struct usb_sevsegdev { u16 textlength; u8 shadow_power; /* for PM */ + u8 has_interface_pm; }; /* sysfs_streq can't replace this completely @@ -68,12 +69,16 @@ static void update_display_powered(struct usb_sevsegdev *mydev) { int rc; - if (!mydev->shadow_power && mydev->powered) { + if (mydev->powered && !mydev->has_interface_pm) { rc = usb_autopm_get_interface(mydev->intf); if (rc < 0) return; + mydev->has_interface_pm = 1; } + if (mydev->shadow_power != 1) + return; + rc = usb_control_msg(mydev->udev, usb_sndctrlpipe(mydev->udev, 0), 0x12, @@ -86,8 +91,10 @@ static void update_display_powered(struct usb_sevsegdev *mydev) if (rc < 0) dev_dbg(&mydev->udev->dev, "power retval = %d\n", rc); - if (mydev->shadow_power && !mydev->powered) + if (!mydev->powered && mydev->has_interface_pm) { usb_autopm_put_interface(mydev->intf); + mydev->has_interface_pm = 0; + } } static void update_display_mode(struct usb_sevsegdev *mydev) @@ -351,6 +358,10 @@ static int sevseg_probe(struct usb_interface *interface, mydev->intf = interface; usb_set_intfdata(interface, mydev); + /* PM */ + mydev->shadow_power = 1; /* currently active */ + mydev->has_interface_pm = 0; /* have not issued autopm_get */ + /*set defaults */ mydev->textmode = 0x02; /* ascii mode */ mydev->mode_msb = 0x06; /* 6 characters */ |