/**************************************************************************** Copyright Echo Digital Audio Corporation (c) 1998 - 2004 All rights reserved www.echoaudio.com This file is part of Echo Digital Audio's generic driver library. Echo Digital Audio's generic driver library 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. 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. ************************************************************************* Translation from C++ and adaptation for use in ALSA-Driver were made by Giuliano Pochini ****************************************************************************/ static int load_asic(struct echoaudio *chip); static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode); static int set_digital_mode(struct echoaudio *chip, u8 mode); static int check_asic_status(struct echoaudio *chip); static int set_sample_rate(struct echoaudio *chip, u32 rate); static int set_input_clock(struct echoaudio *chip, u16 clock); static int set_professional_spdif(struct echoaudio *chip, char prof); static int set_phantom_power(struct echoaudio *chip, char on); static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq, char force); #include static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) { int err; local_irq_enable(); if (snd_BUG_ON((subdevice_id & 0xfff0) != ECHO3G)) return -ENODEV; if ((err = init_dsp_comm_page(chip))) { dev_err(chip->card->dev, "init_hw - could not initialize DSP comm page\n"); return err; } chip->comm_page->e3g_frq_register = cpu_to_le32((E3G_MAGIC_NUMBER / 48000) - 2); chip->device_id = device_id; chip->subdevice_id = subdevice_id; chip->bad_board = true; chip->has_midi = true; chip->dsp_code_to_load = FW_ECHO3G_DSP; /* Load the DSP code and the ASIC on the PCI card and get what type of external box is attached */ err = load_firmware(chip); if (err < 0) { return err; } else if (err == E3G_GINA3G_BOX_TYPE) { chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF | ECHO_CLOCK_BIT_ADAT; chip->card_name = "Gina3G"; chip->px_digital_out = chip->bx_digital_out = 6; chip->px_analog_in = chip->bx_analog_in = 14; chip->px_digital_in = chip->bx_digital_in = 16; chip->px_num = chip->bx_num = 24; chip->has_phantom_power = true; chip->hasnt_input_nominal_level = true; } else if (err == E3G_LAYLA3G_BOX_TYPE) { chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF | ECHO_CLOCK_BIT_ADAT | ECHO_CLOCK_BIT_WORD; chip->card_name = "Layla3G"; chip->px_digital_out = chip->bx_digital_out = 8; chip->px_analog_in = chip->bx_analog_in = 16; chip->px_digital_in = chip->bx_digital_in = 24; chip->px_num = chip->bx_num = 32; } else { return -ENODEV; } chip->digital_modes = ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA | ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL | ECHOCAPS_HAS_DIGITAL_MODE_ADAT; return err; } static int set_mixer_defaults(struct echoaudio *chip) { chip->digital_mode = DIGITAL_MODE_SPDIF_RCA; chip->professional_spdif = false; chip->non_audio_spdif = false; chip->bad_board = false; chip->phantom_power = false; return init_line_levels(chip); } static int set_phantom_power(struct echoaudio *chip, char on) { u32 control_reg = le32_to_cpu(chip->comm_page->control_register); if (on) control_reg |= E3G_PHANTOM_POWER; else control_reg &= ~E3G_PHANTOM_POWER; chip->phantom_power = on; return write_control_reg(chip, control_reg, le32_to_cpu(chip->comm_page->e3g_frq_register), 0); } rews' onchange='this.form.submit();'>mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-29 13:50:06 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-29 13:50:06 -0800
commit39cb2c9a316e77f6dfba96c543e55b6672d5a37e (patch)
tree98fe974ee4e20121253de7f61fc8d01bdb3821c1 /sound/drivers/opl3/opl3_oss.c
parent2c5d9555d6d937966d79d4c6529a5f7b9206e405 (diff)
drm/i915: Check for NULL i915_vma in intel_unpin_fb_obj()
I've seen this trigger twice now, where the i915_gem_object_to_ggtt() call in intel_unpin_fb_obj() returns NULL, resulting in an oops immediately afterwards as the (inlined) call to i915_vma_unpin_fence() tries to dereference it. It seems to be some race condition where the object is going away at shutdown time, since both times happened when shutting down the X server. The call chains were different: - VT ioctl(KDSETMODE, KD_TEXT): intel_cleanup_plane_fb+0x5b/0xa0 [i915] drm_atomic_helper_cleanup_planes+0x6f/0x90 [drm_kms_helper] intel_atomic_commit_tail+0x749/0xfe0 [i915] intel_atomic_commit+0x3cb/0x4f0 [i915] drm_atomic_commit+0x4b/0x50 [drm] restore_fbdev_mode+0x14c/0x2a0 [drm_kms_helper] drm_fb_helper_restore_fbdev_mode_unlocked+0x34/0x80 [drm_kms_helper] drm_fb_helper_set_par+0x2d/0x60 [drm_kms_helper] intel_fbdev_set_par+0x18/0x70 [i915] fb_set_var+0x236/0x460 fbcon_blank+0x30f/0x350 do_unblank_screen+0xd2/0x1a0 vt_ioctl+0x507/0x12a0 tty_ioctl+0x355/0xc30 do_vfs_ioctl+0xa3/0x5e0 SyS_ioctl+0x79/0x90 entry_SYSCALL_64_fastpath+0x13/0x94 - i915 unpin_work workqueue: intel_unpin_work_fn+0x58/0x140 [i915] process_one_work+0x1f1/0x480 worker_thread+0x48/0x4d0 kthread+0x101/0x140 and this patch purely papers over the issue by adding a NULL pointer check and a WARN_ON_ONCE() to avoid the oops that would then generally make the machine unresponsive. Other callers of i915_gem_object_to_ggtt() seem to also check for the returned pointer being NULL and warn about it, so this clearly has happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'sound/drivers/opl3/opl3_oss.c')