#ifndef USBUSX2Y_H #define USBUSX2Y_H #include "../usbaudio.h" #include "../midi.h" #include "usbus428ctldefs.h" #define NRURBS 2 #define URBS_AsyncSeq 10 #define URB_DataLen_AsyncSeq 32 struct snd_usX2Y_AsyncSeq { struct urb *urb[URBS_AsyncSeq]; char *buffer; }; struct snd_usX2Y_urbSeq { int submitted; int len; struct urb *urb[0]; }; #include "usx2yhwdeppcm.h" struct usX2Ydev { struct usb_device *dev; int card_index; int stride; struct urb *In04urb; void *In04Buf; char In04Last[24]; unsigned In04IntCalls; struct snd_usX2Y_urbSeq *US04; wait_queue_head_t In04WaitQueue; struct snd_usX2Y_AsyncSeq AS04; unsigned int rate, format; int chip_status; struct mutex pcm_mutex; struct us428ctls_sharedmem *us428ctls_sharedmem; int wait_iso_frame; wait_queue_head_t us428ctls_wait_queue_head; struct snd_usX2Y_hwdep_pcm_shm *hwdep_pcm_shm; struct snd_usX2Y_substream *subs[4]; struct snd_usX2Y_substream * volatile prepare_subs; wait_queue_head_t prepare_wait_queue; struct list_head midi_list; struct list_head pcm_list; int pcm_devs; }; struct snd_usX2Y_substream { struct usX2Ydev *usX2Y; struct snd_pcm_substream *pcm_substream; int endpoint; unsigned int maxpacksize; /* max packet size in bytes */ atomic_t state; #define state_STOPPED 0 #define state_STARTING1 1 #define state_STARTING2 2 #define state_STARTING3 3 #define state_PREPARED 4 #define state_PRERUNNING 6 #define state_RUNNING 8 int hwptr; /* free frame position in the buffer (only for playback) */ int hwptr_done; /* processed frame position in the buffer */ int transfer_done; /* processed frames since last period update */ struct urb *urb[NRURBS]; /* data urb table */ struct urb *completed_urb; char *tmpbuf; /* temporary buffer for playback */ }; #define usX2Y(c) ((struct usX2Ydev *)(c)->private_data) int usX2Y_audio_create(struct snd_card *card); int usX2Y_AsyncSeq04_init(struct usX2Ydev *usX2Y); int usX2Y_In04_init(struct usX2Ydev *usX2Y); #define NAME_ALLCAPS "US-X2Y" #endif /a>diff
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authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /net/sunrpc/xprtrdma/rpc_rdma.c
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'net/sunrpc/xprtrdma/rpc_rdma.c')