Mikulas Patocka c09bcc91bb mach64: fix image corruption due to reading accelerator registers ... Reading the registers without waiting for engine idle returns unpredictable values. These unpredictable values result in display corruption - if atyfb_imageblit reads the content of DP_PIX_WIDTH with the bit DP_HOST_TRIPLE_EN set (from previous invocation), the driver would never ever clear the bit, resulting in display corruption. We don't want to wait for idle because it would degrade performance, so this patch modifies the driver so that it never reads accelerator registers. HOST_CNTL doesn't have to be read, we can just write it with HOST_BYTE_ALIGN because no other part of the driver cares if HOST_BYTE_ALIGN is set. DP_PIX_WIDTH is written in the functions atyfb_copyarea and atyfb_fillrect with the default value and in atyfb_imageblit with the value set according to the source image data. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Reviewed-by: Ville Syrjälä <syrjala@sci.fi> Cc: stable@vger.kernel.org Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>		2018-10-08 12:57:35 +02:00
..
backlight	backlight: pwm_bl: Fix uninitialized variable	2018-07-25 09:09:59 +01:00
console	dummycon: Stop exporting dummycon_[un]register_output_notifier	2018-08-10 17:23:02 +02:00
fbdev	mach64: fix image corruption due to reading accelerator registers	2018-10-08 12:57:35 +02:00
logo	video/logo: remove obsolete logo files	2018-03-26 15:56:42 +02:00
display_timing.c
hdmi.c	video/hdmi: Reject illegal picture aspect ratios	2018-05-11 09:04:25 +02:00
Kconfig	fbdev changes for v4.17:	2018-04-10 10:20:00 -07:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
of_display_timing.c	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
of_videomode.c
vgastate.c
videomode.c