/*
* Header file for TI DA8XX LCD controller platform data.
*
* Copyright (C) 2008-2009 MontaVista Software Inc.
* Copyright (C) 2008-2009 Texas Instruments Inc
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#ifndef DA8XX_FB_H
#define DA8XX_FB_H
enum panel_shade {
MONOCHROME = 0,
COLOR_ACTIVE,
COLOR_PASSIVE,
};
enum raster_load_mode {
LOAD_DATA = 1,
LOAD_PALETTE,
};
enum da8xx_frame_complete {
DA8XX_FRAME_WAIT,
DA8XX_FRAME_NOWAIT,
};
struct da8xx_lcdc_platform_data {
const char manu_name[10];
void *controller_data;
const char type[25];
void (*panel_power_ctrl)(int);
};
struct lcd_ctrl_config {
enum panel_shade panel_shade;
/* AC Bias Pin Frequency */
int ac_bias;
/* AC Bias Pin Transitions per Interrupt */
int ac_bias_intrpt;
/* DMA burst size */
int dma_burst_sz;
/* Bits per pixel */
int bpp;
/* FIFO DMA Request Delay */
int fdd;
/* TFT Alternative Signal Mapping (Only for active) */
unsigned char tft_alt_mode;
/* 12 Bit Per Pixel (5-6-5) Mode (Only for passive) */
unsigned char stn_565_mode;
/* Mono 8-bit Mode: 1=D0-D7 or 0=D0-D3 */
unsigned char mono_8bit_mode;
/* Horizontal and Vertical Sync Edge: 0=rising 1=falling */
unsigned char sync_edge;
/* Raster Data Order Select: 1=Most-to-least 0=Least-to-most */
unsigned char raster_order;
/* DMA FIFO threshold */
int fifo_th;
};
struct lcd_sync_arg {
int back_porch;
int front_porch;
int pulse_width;
};
/* ioctls */
#define FBIOGET_CONTRAST _IOR('F', 1, int)
#define FBIOPUT_CONTRAST _IOW('F', 2, int)
#define FBIGET_BRIGHTNESS _IOR('F', 3, int)
#define FBIPUT_BRIGHTNESS _IOW('F', 3, int)
#define FBIGET_COLOR _IOR('F', 5, int)
#define FBIPUT_COLOR _IOW('F', 6, int)
#define FBIPUT_HSYNC _IOW('F', 9, int)
#define FBIPUT_VSYNC _IOW('F', 10, int)
/* Proprietary FB_SYNC_ flags */
#define FB_SYNC_CLK_INVERT 0x40000000
#endif /* ifndef DA8XX_FB_H */
ef='/cgit.cgi/linux/net-next.git/diff/include/sound/ak4641.h?id=433e19cf33d34bb6751c874a9c00980552fe508c'>diff
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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>