/*
* DMA buffer calls
*/
int DMAbuf_open(int dev, int mode);
int DMAbuf_release(int dev, int mode);
int DMAbuf_getwrbuffer(int dev, char **buf, int *size, int dontblock);
int DMAbuf_getrdbuffer(int dev, char **buf, int *len, int dontblock);
int DMAbuf_rmchars(int dev, int buff_no, int c);
int DMAbuf_start_output(int dev, int buff_no, int l);
int DMAbuf_move_wrpointer(int dev, int l);
/* int DMAbuf_ioctl(int dev, unsigned int cmd, void __user *arg, int local); */
void DMAbuf_init(int dev, int dma1, int dma2);
void DMAbuf_deinit(int dev);
int DMAbuf_start_dma (int dev, unsigned long physaddr, int count, int dma_mode);
void DMAbuf_inputintr(int dev);
void DMAbuf_outputintr(int dev, int underflow_flag);
struct dma_buffparms;
int DMAbuf_space_in_queue (int dev);
int DMAbuf_activate_recording (int dev, struct dma_buffparms *dmap);
int DMAbuf_get_buffer_pointer (int dev, struct dma_buffparms *dmap, int direction);
void DMAbuf_launch_output(int dev, struct dma_buffparms *dmap);
unsigned int DMAbuf_poll(struct file *file, int dev, poll_table *wait);
void DMAbuf_start_devices(unsigned int devmask);
void DMAbuf_reset (int dev);
int DMAbuf_sync (int dev);
/*
* System calls for /dev/dsp and /dev/audio (audio.c)
*/
int audio_read (int dev, struct file *file, char __user *buf, int count);
int audio_write (int dev, struct file *file, const char __user *buf, int count);
int audio_open (int dev, struct file *file);
void audio_release (int dev, struct file *file);
int audio_ioctl (int dev, struct file *file,
unsigned int cmd, void __user *arg);
void audio_init_devices (void);
void reorganize_buffers (int dev, struct dma_buffparms *dmap, int recording);
/*
* System calls for the /dev/sequencer
*/
int sequencer_read (int dev, struct file *file, char __user *buf, int count);
int sequencer_write (int dev, struct file *file, const char __user *buf, int count);
int sequencer_open (int dev, struct file *file);
void sequencer_release (int dev, struct file *file);
int sequencer_ioctl (int dev, struct file *file, unsigned int cmd, void __user *arg);
unsigned int sequencer_poll(int dev, struct file *file, poll_table * wait);
void sequencer_init (void);
void sequencer_unload (void);
void sequencer_timer(unsigned long dummy);
int note_to_freq(int note_num);
unsigned long compute_finetune(unsigned long base_freq, int bend, int range,
int vibrato_bend);
void seq_input_event(unsigned char *event, int len);
void seq_copy_to_input (unsigned char *event, int len);
/*
* System calls for the /dev/midi
*/
int MIDIbuf_read (int dev, struct file *file, char __user *buf, int count);
int MIDIbuf_write (int dev, struct file *file, const char __user *buf, int count);
int MIDIbuf_open (int dev, struct file *file);
void MIDIbuf_release (int dev, struct file *file);
int MIDIbuf_ioctl (int dev, struct file *file, unsigned int cmd, void __user *arg);
unsigned int MIDIbuf_poll(int dev, struct file *file, poll_table * wait);
int MIDIbuf_avail(int dev);
void MIDIbuf_bytes_received(int dev, unsigned char *buf, int count);
/* From soundcard.c */
void request_sound_timer (int count);
void sound_stop_timer(void);
void conf_printf(char *name, struct address_info *hw_config);
void conf_printf2(char *name, int base, int irq, int dma, int dma2);
/* From sound_timer.c */
void sound_timer_interrupt(void);
void sound_timer_syncinterval(unsigned int new_usecs);
/* From midi_synth.c */
void do_midi_msg (int synthno, unsigned char *msg, int mlen);
m method='get'>PCI/MSI: Don't apply affinity if there aren't enough vectors left
Bart reported a problem wіth an out of bounds access in the low-level IRQ
affinity code, which we root caused to the qla2xxx driver assigning all its
MSI-X vectors to the pre and post vectors, and not having any left for the
actually spread IRQs.
Fix this issue by not asking for affinity assignment when there are no
vectors to assign left.
Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()")
Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com
Reported-by: Bart Van Assche <bart.vanassche@sandisk.com>
Tested-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>