/* * udc.h - ChipIdea UDC structures * * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. * * Author: David Lopo * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __DRIVERS_USB_CHIPIDEA_UDC_H #define __DRIVERS_USB_CHIPIDEA_UDC_H #include #define CTRL_PAYLOAD_MAX 64 #define RX 0 /* similar to USB_DIR_OUT but can be used as an index */ #define TX 1 /* similar to USB_DIR_IN but can be used as an index */ /* DMA layout of transfer descriptors */ struct ci_hw_td { /* 0 */ __le32 next; #define TD_TERMINATE BIT(0) #define TD_ADDR_MASK (0xFFFFFFEUL << 5) /* 1 */ __le32 token; #define TD_STATUS (0x00FFUL << 0) #define TD_STATUS_TR_ERR BIT(3) #define TD_STATUS_DT_ERR BIT(5) #define TD_STATUS_HALTED BIT(6) #define TD_STATUS_ACTIVE BIT(7) #define TD_MULTO (0x0003UL << 10) #define TD_IOC BIT(15) #define TD_TOTAL_BYTES (0x7FFFUL << 16) /* 2 */ __le32 page[5]; #define TD_CURR_OFFSET (0x0FFFUL << 0) #define TD_FRAME_NUM (0x07FFUL << 0) #define TD_RESERVED_MASK (0x0FFFUL << 0) } __attribute__ ((packed, aligned(4))); /* DMA layout of queue heads */ struct ci_hw_qh { /* 0 */ __le32 cap; #define QH_IOS BIT(15) #define QH_MAX_PKT (0x07FFUL << 16) #define QH_ZLT BIT(29) #define QH_MULT (0x0003UL << 30) #define QH_ISO_MULT(x) ((x >> 11) & 0x03) /* 1 */ __le32 curr; /* 2 - 8 */ struct ci_hw_td td; /* 9 */ __le32 RESERVED; struct usb_ctrlrequest setup; } __attribute__ ((packed, aligned(4))); struct td_node { struct list_head td; dma_addr_t dma; struct ci_hw_td *ptr; }; /** * struct ci_hw_req - usb request representation * @req: request structure for gadget drivers * @queue: link to QH list * @ptr: transfer descriptor for this request * @dma: dma address for the transfer descriptor * @zptr: transfer descriptor for the zero packet * @zdma: dma address of the zero packet's transfer descriptor */ struct ci_hw_req { struct usb_request req; struct list_head queue; struct list_head tds; }; #ifdef CONFIG_USB_CHIPIDEA_UDC int ci_hdrc_gadget_init(struct ci_hdrc *ci); void ci_hdrc_gadget_destroy(struct ci_hdrc *ci); #else static inline int ci_hdrc_gadget_init(struct ci_hdrc *ci) { return -ENXIO; } static inline void ci_hdrc_gadget_destroy(struct ci_hdrc *ci) { } #endif #endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */ ep'>log msg
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/linux/net-next.git/tree/sound/usb/caiaq?h=nds-private-remove&id=e6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0'>sound/usb/caiaq
parent4e5b54f127426c82dc2816340c26d951a5bb3429 (diff)
drm: Don't race connector registration
I was under the misconception that the sysfs dev stuff can be fully set up, and then registered all in one step with device_add. That's true for properties and property groups, but not for parents and child devices. Those must be fully registered before you can register a child. Add a bit of tracking to make sure that asynchronous mst connector hotplugging gets this right. For consistency we rely upon the implicit barriers of the connector->mutex, which is taken anyway, to ensure that at least either the connector or device registration call will work out. Mildly tested since I can't reliably reproduce this on my mst box here. Reported-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1484237756-2720-1-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'sound/usb/caiaq')