From a8c06e407ef969461b7f51ec72839fe382dd3c29 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 13 Mar 2017 10:18:41 +0800 Subject: usb: separate out sysdev pointer from usb_bus For xhci-hcd platform device, all the DMA parameters are not configured properly, notably dma ops for dwc3 devices. The idea here is that you pass in the parent of_node along with the child device pointer, so it would behave exactly like the parent already does. The difference is that it also handles all the other attributes besides the mask. sysdev will represent the physical device, as seen from firmware or bus.Splitting the usb_bus->controller field into the Linux-internal device (used for the sysfs hierarchy, for printks and for power management) and a new pointer (used for DMA, DT enumeration and phy lookup) probably covers all that we really need. Signed-off-by: Arnd Bergmann Signed-off-by: Sriram Dash Tested-by: Baolin Wang Tested-by: Brian Norris Tested-by: Alexander Sverdlin Tested-by: Vivek Gautam Signed-off-by: Mathias Nyman Signed-off-by: Peter Chen Cc: Felipe Balbi Cc: Grygorii Strashko Cc: Sinjan Kumar Cc: David Fisher Cc: Catalin Marinas Cc: "Thang Q. Nguyen" Cc: Yoshihiro Shimoda Cc: Stephen Boyd Cc: Bjorn Andersson Cc: Ming Lei Cc: Jon Masters Cc: Dann Frazier Cc: Peter Chen Cc: Leo Li Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/usb.h') diff --git a/include/linux/usb.h b/include/linux/usb.h index 7e68259360de..148752640693 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -354,6 +354,7 @@ struct usb_devmap { */ struct usb_bus { struct device *controller; /* host/master side hardware */ + struct device *sysdev; /* as seen from firmware or bus */ int busnum; /* Bus number (in order of reg) */ const char *bus_name; /* stable id (PCI slot_name etc) */ u8 uses_dma; /* Does the host controller use DMA? */ -- cgit v1.2.3