/* * 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 */ value='author'>author
path: root/sound/pci/rme9652/rme9652.c
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 09:37:34 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 21:47:58 +0100
commit0becc0ae5b42828785b589f686725ff5bc3b9b25 (patch)
treebe6d0e1f37c38ed0a7dd5da2d4b1e93f0fb43101 /sound/pci/rme9652/rme9652.c
parent24c2503255d35c269b67162c397a1a1c1e02f6ce (diff)
x86/mce: Make timer handling more robust
Erik reported that on a preproduction hardware a CMCI storm triggers the BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is started by the CMCI logic before the MCE CPU hotplug callback starts the timer with add_timer_on(). So the timer is already queued which triggers the BUG. Using add_timer_on() is pretty pointless in this code because the timer is strictlty per CPU, initialized as pinned and all operations which arm the timer happen on the CPU to which the timer belongs. Simplify the whole machinery by using mod_timer() instead of add_timer_on() which avoids the problem because mod_timer() can handle already queued timers. Use __start_timer() everywhere so the earliest armed expiry time is preserved. Reported-by: Erik Veijola <erik.veijola@intel.com> Tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'sound/pci/rme9652/rme9652.c')