/*
* wm2000.h -- WM2000 Soc Audio driver
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _WM2000_H
#define _WM2000_H
#define WM2000_REG_SYS_START 0x8000
#define WM2000_REG_ANC_GAIN_CTRL 0x8fa2
#define WM2000_REG_MSE_TH2 0x8fdf
#define WM2000_REG_MSE_TH1 0x8fe0
#define WM2000_REG_SPEECH_CLARITY 0x8fef
#define WM2000_REG_SYS_WATCHDOG 0x8ff6
#define WM2000_REG_ANA_VMID_PD_TIME 0x8ff7
#define WM2000_REG_ANA_VMID_PU_TIME 0x8ff8
#define WM2000_REG_CAT_FLTR_INDX 0x8ff9
#define WM2000_REG_CAT_GAIN_0 0x8ffa
#define WM2000_REG_SYS_STATUS 0x8ffc
#define WM2000_REG_SYS_MODE_CNTRL 0x8ffd
#define WM2000_REG_SYS_START0 0x8ffe
#define WM2000_REG_SYS_START1 0x8fff
#define WM2000_REG_ID1 0xf000
#define WM2000_REG_ID2 0xf001
#define WM2000_REG_REVISON 0xf002
#define WM2000_REG_SYS_CTL1 0xf003
#define WM2000_REG_SYS_CTL2 0xf004
#define WM2000_REG_ANC_STAT 0xf005
#define WM2000_REG_IF_CTL 0xf006
#define WM2000_REG_ANA_MIC_CTL 0xf028
#define WM2000_REG_SPK_CTL 0xf034
/* SPEECH_CLARITY */
#define WM2000_SPEECH_CLARITY 0x01
/* SYS_STATUS */
#define WM2000_STATUS_MOUSE_ACTIVE 0x40
#define WM2000_STATUS_CAT_FREQ_COMPLETE 0x20
#define WM2000_STATUS_CAT_GAIN_COMPLETE 0x10
#define WM2000_STATUS_THERMAL_SHUTDOWN_COMPLETE 0x08
#define WM2000_STATUS_ANC_DISABLED 0x04
#define WM2000_STATUS_POWER_DOWN_COMPLETE 0x02
#define WM2000_STATUS_BOOT_COMPLETE 0x01
/* SYS_MODE_CNTRL */
#define WM2000_MODE_ANA_SEQ_INCLUDE 0x80
#define WM2000_MODE_MOUSE_ENABLE 0x40
#define WM2000_MODE_CAT_FREQ_ENABLE 0x20
#define WM2000_MODE_CAT_GAIN_ENABLE 0x10
#define WM2000_MODE_BYPASS_ENTRY 0x08
#define WM2000_MODE_STANDBY_ENTRY 0x04
#define WM2000_MODE_THERMAL_ENABLE 0x02
#define WM2000_MODE_POWER_DOWN 0x01
/* SYS_CTL1 */
#define WM2000_SYS_STBY 0x01
/* SYS_CTL2 */
#define WM2000_MCLK_DIV2_ENA_CLR 0x80
#define WM2000_MCLK_DIV2_ENA_SET 0x40
#define WM2000_ANC_ENG_CLR 0x20
#define WM2000_ANC_ENG_SET 0x10
#define WM2000_ANC_INT_N_CLR 0x08
#define WM2000_ANC_INT_N_SET 0x04
#define WM2000_RAM_CLR 0x02
#define WM2000_RAM_SET 0x01
/* ANC_STAT */
#define WM2000_ANC_ENG_IDLE 0x01
#endif
r class='nohover'>
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in
hv_need_to_signal_on_read()")
added the proper mb(), but removed the test "prev_write_sz < pending_sz"
when making the signal decision.
As a result, the guest can signal the host unnecessarily,
and then the host can throttle the guest because the host
thinks the guest is buggy or malicious; finally the user
running stress test can perceive intermittent freeze of
the guest.
This patch brings back the test, and properly handles the
in-place consumption APIs used by NetVSC (see get_next_pkt_raw(),
put_pkt_raw() and commit_rd_index()).
Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in
hv_need_to_signal_on_read()")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>