/* * Copyright (c) 1999 by Uros Bizjak * Takashi Iwai * * SB16ASP/AWE32 CSP control * * 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 * */ #ifndef __SOUND_SB16_CSP_H #define __SOUND_SB16_CSP_H #include #include #include #include struct snd_sb_csp; /* indices for the known CSP programs */ enum { CSP_PROGRAM_MULAW, CSP_PROGRAM_ALAW, CSP_PROGRAM_ADPCM_INIT, CSP_PROGRAM_ADPCM_PLAYBACK, CSP_PROGRAM_ADPCM_CAPTURE, CSP_PROGRAM_COUNT }; /* * CSP operators */ struct snd_sb_csp_ops { int (*csp_use) (struct snd_sb_csp * p); int (*csp_unuse) (struct snd_sb_csp * p); int (*csp_autoload) (struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode); int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels); int (*csp_stop) (struct snd_sb_csp * p); int (*csp_qsound_transfer) (struct snd_sb_csp * p); }; /* * CSP private data */ struct snd_sb_csp { struct snd_sb *chip; /* SB16 DSP */ int used; /* usage flag - exclusive */ char codec_name[16]; /* name of codec */ unsigned short func_nr; /* function number */ unsigned int acc_format; /* accepted PCM formats */ int acc_channels; /* accepted channels */ int acc_width; /* accepted sample width */ int acc_rates; /* accepted sample rates */ int mode; /* MODE */ int run_channels; /* current CSP channels */ int run_width; /* current sample width */ int version; /* CSP version (0x10 - 0x1f) */ int running; /* running state */ struct snd_sb_csp_ops ops; /* operators */ spinlock_t q_lock; /* locking */ int q_enabled; /* enabled flag */ int qpos_left; /* left position */ int qpos_right; /* right position */ int qpos_changed; /* position changed flag */ struct snd_kcontrol *qsound_switch; struct snd_kcontrol *qsound_space; struct mutex access_mutex; /* locking */ const struct firmware *csp_programs[CSP_PROGRAM_COUNT]; }; int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep); #endif /* __SOUND_SB16_CSP */ 10' name='q' value=''/>
path: root/net/6lowpan/nhc_hop.c
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authorDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
committerDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
commit54791b276b4000b307339f269d3bf7db877d536f (patch)
tree1c2616bd373ce5ea28aac2a53e32f5b5834901ce /net/6lowpan/nhc_hop.c
parent5d0e7705774dd412a465896d08d59a81a345c1e4 (diff)
parent047487241ff59374fded8c477f21453681f5995c (diff)
Merge branch 'sparc64-non-resumable-user-error-recovery'
Liam R. Howlett says: ==================== sparc64: Recover from userspace non-resumable PIO & MEM errors A non-resumable error from userspace is able to cause a kernel panic or trap loop due to the setup and handling of the queued traps once in the kernel. This patch series addresses both of these issues. The queues are fixed by simply zeroing the memory before use. PIO errors from userspace will result in a SIGBUS being sent to the user process. The MEM errors form userspace will result in a SIGKILL and also cause the offending pages to be claimed so they are no longer used in future tasks. SIGKILL is used to ensure that the process does not try to coredump and result in an attempt to read the memory again from within kernel space. Although there is a HV call to scrub the memory (mem_scrub), there is no easy way to guarantee that the real memory address(es) are not used by other tasks. Clearing the error with mem_scrub would zero the memory and cause the other processes to proceed with bad data. The handling of other non-resumable errors remain unchanged and will cause a panic. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/6lowpan/nhc_hop.c')