linux/drivers/auxdisplay
Thomas Zimmermann 76f92201b8 fbdev: Push pgprot_decrypted() into mmap implementations
If a driver sets struct fb_ops.fb_mmap, the fbdev core automatically
calls pgprot_decrypted(). But the default fb_mmap code doesn't handle
pgprot_decrypted().

Move the call to pgprot_decrypted() into each drivers' fb_mmap function.
This only concerns fb_mmap functions for system and DMA memory. For
I/O memory, which is the default case, nothing changes. The fb_mmap
for I/O-memory can later be moved into a helper as well.

DRM's fbdev emulation handles pgprot_decrypted() internally via the
Prime helpers. Fbdev doesn't have to do anything in this case. In
cases where DRM uses deferred I/O, this patch updates fb_mmap correctly.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231127131655.4020-30-tzimmermann@suse.de
2023-11-29 12:20:44 +01:00
..
arm-charlcd.c auxdisplay: Replace HTTP links with HTTPS ones 2020-08-08 16:10:03 +02:00
cfag12864b.c auxdisplay: Replace symbolic permissions with octal permissions 2021-07-16 07:42:35 +02:00
cfag12864bfb.c fbdev: Push pgprot_decrypted() into mmap implementations 2023-11-29 12:20:44 +01:00
charlcd.c auxdisplay: charlcd: checking for pointer reference before dereferencing 2021-11-24 11:46:52 +01:00
charlcd.h auxdisplay: Change gotoxy calling interface 2020-11-04 11:04:04 +01:00
hd44780_common.c auxdisplay: hd44780: move cursor home after clear display command 2023-08-19 21:53:49 +02:00
hd44780_common.h auxdisplay: Change gotoxy calling interface 2020-11-04 11:04:04 +01:00
hd44780.c auxdisplay: hd44780: Fix potential memory leak in hd44780_remove() 2022-12-12 12:21:41 +01:00
ht16k33.c fbdev: Push pgprot_decrypted() into mmap implementations 2023-11-29 12:20:44 +01:00
img-ascii-lcd.c auxdisplay: Extract character line display core support 2021-10-21 23:36:28 +02:00
Kconfig auxdisplay/ht16k33: Initialize fb_ops with fbdev macros 2023-11-29 12:20:24 +01:00
ks0108.c auxdisplay: ks0108: remove superfluous header files 2021-10-22 00:04:43 +02:00
lcd2s.c auxdisplay: Switch i2c drivers back to use .probe() 2023-06-02 13:23:32 +02:00
line-display.c auxdisplay: linedisp: Add support for changing scroll rate 2021-10-21 23:36:29 +02:00
line-display.h auxdisplay: Extract character line display core support 2021-10-21 23:36:28 +02:00
Makefile auxdisplay: Extract character line display core support 2021-10-21 23:36:28 +02:00
panel.c auxdisplay: panel: Replace deprecated strncpy() with strtomem_pad() 2023-09-29 14:48:31 -07:00