/* * ALSA driver for Echoaudio soundcards. * Copyright (C) 2003-2004 Giuliano Pochini * * 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; version 2 of the License. * * 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. */ #define ECHO24_FAMILY #define ECHOCARD_GINA24 #define ECHOCARD_NAME "Gina24" #define ECHOCARD_HAS_MONITOR #define ECHOCARD_HAS_ASIC #define ECHOCARD_HAS_INPUT_NOMINAL_LEVEL #define ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL #define ECHOCARD_HAS_SUPER_INTERLEAVE #define ECHOCARD_HAS_DIGITAL_IO #define ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE #define ECHOCARD_HAS_DIGITAL_MODE_SWITCH #define ECHOCARD_HAS_EXTERNAL_CLOCK #define ECHOCARD_HAS_ADAT 6 #define ECHOCARD_HAS_STEREO_BIG_ENDIAN32 /* Pipe indexes */ #define PX_ANALOG_OUT 0 /* 8 */ #define PX_DIGITAL_OUT 8 /* 8 */ #define PX_ANALOG_IN 16 /* 2 */ #define PX_DIGITAL_IN 18 /* 8 */ #define PX_NUM 26 /* Bus indexes */ #define BX_ANALOG_OUT 0 /* 8 */ #define BX_DIGITAL_OUT 8 /* 8 */ #define BX_ANALOG_IN 16 /* 2 */ #define BX_DIGITAL_IN 18 /* 8 */ #define BX_NUM 26 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "echoaudio.h" MODULE_FIRMWARE("ea/loader_dsp.fw"); MODULE_FIRMWARE("ea/gina24_301_dsp.fw"); MODULE_FIRMWARE("ea/gina24_361_dsp.fw"); MODULE_FIRMWARE("ea/gina24_301_asic.fw"); MODULE_FIRMWARE("ea/gina24_361_asic.fw"); #define FW_361_LOADER 0 #define FW_GINA24_301_DSP 1 #define FW_GINA24_361_DSP 2 #define FW_GINA24_301_ASIC 3 #define FW_GINA24_361_ASIC 4 static const struct firmware card_fw[] = { {0, "loader_dsp.fw"}, {0, "gina24_301_dsp.fw"}, {0, "gina24_361_dsp.fw"}, {0, "gina24_301_asic.fw"}, {0, "gina24_361_asic.fw"} }; static const struct pci_device_id snd_echo_ids[] = { {0x1057, 0x1801, 0xECC0, 0x0050, 0, 0, 0}, /* DSP 56301 Gina24 rev.0 */ {0x1057, 0x1801, 0xECC0, 0x0051, 0, 0, 0}, /* DSP 56301 Gina24 rev.1 */ {0x1057, 0x3410, 0xECC0, 0x0050, 0, 0, 0}, /* DSP 56361 Gina24 rev.0 */ {0x1057, 0x3410, 0xECC0, 0x0051, 0, 0, 0}, /* DSP 56361 Gina24 rev.1 */ {0,} }; static struct snd_pcm_hardware pcm_hardware_skel = { .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_SYNC_START, .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, .buffer_bytes_max = 262144, .period_bytes_min = 32, .period_bytes_max = 131072, .periods_min = 2, .periods_max = 220, /* One page (4k) contains 512 instructions. I don't know if the hw supports lists longer than this. In this case periods_max=220 is a safe limit to make sure the list never exceeds 512 instructions. 220 ~= (512 - 1 - (BUFFER_BYTES_MAX / PAGE_SIZE)) / 2 */ }; #include "gina24_dsp.c" #include "echoaudio_dsp.c" #include "echoaudio_gml.c" #include "echoaudio.c" 0space:mode:
authorDouglas Miller <dougmill@linux.vnet.ibm.com>2017-01-28 06:42:20 -0600
committerTejun Heo <tj@kernel.org>2017-01-28 07:49:42 -0500
commit966d2b04e070bc040319aaebfec09e0144dc3341 (patch)
tree4b96156e3d1dd4dfd6039b7c219c9dc4616da52d /drivers/usb/serial/kl5kusb105.h
parent1b1bc42c1692e9b62756323c675a44cb1a1f9dbd (diff)
percpu-refcount: fix reference leak during percpu-atomic transition
percpu_ref_tryget() and percpu_ref_tryget_live() should return "true" IFF they acquire a reference. But the return value from atomic_long_inc_not_zero() is a long and may have high bits set, e.g. PERCPU_COUNT_BIAS, and the return value of the tryget routines is bool so the reference may actually be acquired but the routines return "false" which results in a reference leak since the caller assumes it does not need to do a corresponding percpu_ref_put(). This was seen when performing CPU hotplug during I/O, as hangs in blk_mq_freeze_queue_wait where percpu_ref_kill (blk_mq_freeze_queue_start) raced with percpu_ref_tryget (blk_mq_timeout_work). Sample stack trace: __switch_to+0x2c0/0x450 __schedule+0x2f8/0x970 schedule+0x48/0xc0 blk_mq_freeze_queue_wait+0x94/0x120 blk_mq_queue_reinit_work+0xb8/0x180 blk_mq_queue_reinit_prepare+0x84/0xa0 cpuhp_invoke_callback+0x17c/0x600 cpuhp_up_callbacks+0x58/0x150 _cpu_up+0xf0/0x1c0 do_cpu_up+0x120/0x150 cpu_subsys_online+0x64/0xe0 device_online+0xb4/0x120 online_store+0xb4/0xc0 dev_attr_store+0x68/0xa0 sysfs_kf_write+0x80/0xb0 kernfs_fop_write+0x17c/0x250 __vfs_write+0x6c/0x1e0 vfs_write+0xd0/0x270 SyS_write+0x6c/0x110 system_call+0x38/0xe0 Examination of the queue showed a single reference (no PERCPU_COUNT_BIAS, and __PERCPU_REF_DEAD, __PERCPU_REF_ATOMIC set) and no requests. However, conditions at the time of the race are count of PERCPU_COUNT_BIAS + 0 and __PERCPU_REF_DEAD and __PERCPU_REF_ATOMIC set. The fix is to make the tryget routines use an actual boolean internally instead of the atomic long result truncated to a int. Fixes: e625305b3907 percpu-refcount: make percpu_ref based on longs instead of ints Link: https://bugzilla.kernel.org/show_bug.cgi?id=190751 Signed-off-by: Douglas Miller <dougmill@linux.vnet.ibm.com> Reviewed-by: Jens Axboe <axboe@fb.com> Signed-off-by: Tejun Heo <tj@kernel.org> Fixes: e625305b3907 ("percpu-refcount: make percpu_ref based on longs instead of ints") Cc: stable@vger.kernel.org # v3.18+
Diffstat (limited to 'drivers/usb/serial/kl5kusb105.h')