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| author | David S. Miller <davem@davemloft.net> | 2010-05-12 11:05:35 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-05-12 11:05:35 +0400 |
| commit | 278554bd6579206921f5d8a523649a7a57f8850d (patch) | |
| tree | 4e6c527daf0910e455b3aa72e2c96b0479e430be /drivers/usb/misc/usbsevseg.c | |
| parent | 5a147e8bf982f9dd414c1dd751fe02c1942506b2 (diff) | |
| parent | cea0d767c29669bf89f86e4aee46ef462d2ebae8 (diff) | |
| download | linux-278554bd6579206921f5d8a523649a7a57f8850d.tar.xz | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
Documentation/feature-removal-schedule.txt
drivers/net/wireless/ath/ar9170/usb.c
drivers/scsi/iscsi_tcp.c
net/ipv4/ipmr.c
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 */ |