diff options
| author | Joel Becker <joel.becker@oracle.com> | 2010-04-30 22:37:29 +0200 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2010-04-30 22:37:29 +0200 |
| commit | f9221fd80343285514568da6c5dbda0f87109de8 (patch) | |
| tree | 3a2f0077ebea9d094bdeedb319c97cb591d51c51 /drivers/usb/misc/usbsevseg.c | |
| parent | ocfs2_dlmfs: Fix math error when reading LVB. (diff) | |
| parent | ocfs2: Add directory entry later in ocfs2_symlink() and ocfs2_mknod() (diff) | |
| download | linux-f9221fd80343285514568da6c5dbda0f87109de8.tar.xz linux-f9221fd80343285514568da6c5dbda0f87109de8.zip | |
Merge branch 'skip_delete_inode' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2-mark into ocfs2-fixes
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 */ |