forked from Minki/linux
db69087437
This updates the handling of power state for USB interfaces.
- Formalizes an existing invariant: interface "power state" is a boolean:
ON when I/O is allowed, and FREEZE otherwise. It does so by defining
some inlined helpers, then using them.
- Adds a useful invariant: the only interfaces marked active are those
bound to non-suspended drivers. Later patches build on this invariant.
- Simplifies the interface driver API (and removes some error paths) by
removing the requirement that they record power state changes during
suspend and resume callbacks. Now usbcore does that.
A few drivers were simplified to address that last change.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/core/hub.c | 33 +++++++++------------
drivers/usb/core/message.c | 1
drivers/usb/core/usb.c | 65 +++++++++++++++++++++++++++++++++----------
drivers/usb/core/usb.h | 18 +++++++++++
drivers/usb/input/hid-core.c | 2 -
drivers/usb/misc/usbtest.c | 10 ------
drivers/usb/net/pegasus.c | 2 -
drivers/usb/net/usbnet.c | 2 -
8 files changed, 85 insertions(+), 48 deletions(-)
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||
|---|---|---|
| .. | ||
| buffer.c | ||
| config.c | ||
| devices.c | ||
| devio.c | ||
| file.c | ||
| hcd-pci.c | ||
| hcd.c | ||
| hcd.h | ||
| hub.c | ||
| hub.h | ||
| inode.c | ||
| Kconfig | ||
| Makefile | ||
| message.c | ||
| otg_whitelist.h | ||
| sysfs.c | ||
| urb.c | ||
| usb.c | ||
| usb.h | ||