Bug ID::88761
Summary:USB storage device cause usb bus can't enter runtime suspend
AS I known,SDcard use SDIO interface,I need use a sdcard-reader( USB to
SDIO)if I want to use sdcard on my board ,but I have try many
sdcard-reader without sdcard to connect usb ,all of them will cause usb
bus can't enter runtime suspend. and I try to connect a usb storage on
my demo board also will cause usb bus can't enter runtime suspend,but if
I press power button,the usb bus can enter suspend mode.I guess the
driver hav not implemented this function.
Alan Stern tell me that Runtime suspend for USB storage devices was
added in the 3.14 kernel,but I can't find the patches about USB
runtime.Who can help me?
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