/* * Copyright (c) 2006,2007 Daniel Mack * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include #include "device.h" #include "midi.h" static int snd_usb_caiaq_midi_input_open(struct snd_rawmidi_substream *substream) { return 0; } static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substream) { return 0; } static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up) { struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data; if (!cdev) return; cdev->midi_receive_substream = up ? substream : NULL; } static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substream) { return 0; } static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream) { struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data; if (cdev->midi_out_active) { usb_kill_urb(&cdev->midi_out_urb); cdev->midi_out_active = 0; } return 0; } static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *cdev, struct snd_rawmidi_substream *substream) { int len, ret; struct device *dev = caiaqdev_to_dev(cdev); cdev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE; cdev->midi_out_buf[1] = 0; /* port */ len = snd_rawmidi_transmit(substream, cdev->midi_out_buf + 3, EP1_BUFSIZE - 3); if (len <= 0) return; cdev->midi_out_buf[2] = len; cdev->midi_out_urb.transfer_buffer_length = len+3; ret = usb_submit_urb(&cdev->midi_out_urb, GFP_ATOMIC); if (ret < 0) dev_err(dev, "snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed," "ret=%d, len=%d\n", substream, ret, len); else cdev->midi_out_active = 1; } static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up) { struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data; if (up) { cdev->midi_out_substream = substream; if (!cdev->midi_out_active) snd_usb_caiaq_midi_send(cdev, substream); } else { cdev->midi_out_substream = NULL; } } static struct snd_rawmidi_ops snd_usb_caiaq_midi_output = { .open = snd_usb_caiaq_midi_output_open, .close = snd_usb_caiaq_midi_output_close, .trigger = snd_usb_caiaq_midi_output_trigger, }; static struct snd_rawmidi_ops snd_usb_caiaq_midi_input = { .open = snd_usb_caiaq_midi_input_open, .close = snd_usb_caiaq_midi_input_close, .trigger = snd_usb_caiaq_midi_input_trigger, }; void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *cdev, int port, const char *buf, int len) { if (!cdev->midi_receive_substream) return; snd_rawmidi_receive(cdev->midi_receive_substream, buf, len); } int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device) { int ret; struct snd_rawmidi *rmidi; ret = snd_rawmidi_new(device->chip.card, device->product_name, 0, device->spec.num_midi_out, device->spec.num_midi_in, &rmidi); if (ret < 0) return ret; strlcpy(rmidi->name, device->product_name, sizeof(rmidi->name)); rmidi->info_flags = SNDRV_RAWMIDI_INFO_DUPLEX; rmidi->private_data = device; if (device->spec.num_midi_out > 0) { rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usb_caiaq_midi_output); } if (device->spec.num_midi_in > 0) { rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usb_caiaq_midi_input); } device->rmidi = rmidi; return 0; } void snd_usb_caiaq_midi_output_done(struct urb* urb) { struct snd_usb_caiaqdev *cdev = urb->context; cdev->midi_out_active = 0; if (urb->status != 0) return; if (!cdev->midi_out_substream) return; snd_usb_caiaq_midi_send(cdev, cdev->midi_out_substream); } Christoph Hellwig <hch@lst.de>2017-01-30 13:15:41 +0100 committerBjorn Helgaas <bhelgaas@google.com>2017-02-02 10:35:46 -0600 commitdfef358bd1beb4e7b5c94eca944be9cd23dfc752 (patch) treeb9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /sound/isa/Makefile parent030305d69fc6963c16003f50d7e8d74b02d0a143 (diff)
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>
Diffstat (limited to 'sound/isa/Makefile')