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fbdev fixes for v4.19-rc7: 

- fix OMAPFB_MEMORY_READ ioctl to not leak kernel memory in omapfb driver
   (Tomi Valkeinen)
 
 - add missing prepare/unprepare clock operations in pxa168fb driver
   (Lubomir Rintel)
 
 - add nobgrt option in efifb driver to disable ACPI BGRT logo restore
   (Hans de Goede)
 
 - fix spelling mistake in fall-through annotation in stifb driver
   (Gustavo A. R. Silva)
 
 - fix URL for uvesafb repository in the documentation (Adam Jackson)
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Merge tag 'fbdev-v4.19-rc7' of https://github.com/bzolnier/linux

Bartlomiej writes:
  "fbdev fixes for v4.19-rc7:

   - fix OMAPFB_MEMORY_READ ioctl to not leak kernel memory in omapfb driver
     (Tomi Valkeinen)

   - add missing prepare/unprepare clock operations in pxa168fb driver
     (Lubomir Rintel)

   - add nobgrt option in efifb driver to disable ACPI BGRT logo restore
     (Hans de Goede)

   - fix spelling mistake in fall-through annotation in stifb driver
     (Gustavo A. R. Silva)

   - fix URL for uvesafb repository in the documentation (Adam Jackson)"

* tag 'fbdev-v4.19-rc7' of https://github.com/bzolnier/linux:
  video/fbdev/stifb: Fix spelling mistake in fall-through annotation
  uvesafb: Fix URLs in the documentation
  efifb: BGRT: Add nobgrt option
  fbdev/omapfb: fix omapfb_memory_read infoleak
  pxa168fb: prepare the clock
This commit is contained in:
Greg Kroah-Hartman 2018-10-02 05:19:43 -07:00
parent 5e0b19ac33 7c968791f7
commit 1d2ba7fee2
6 changed files with 18 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Documentation/fb/uvesafb.txt
View File

@ -15,7 +15,8 @@ than x86. Check the v86d documentation for a list of currently supported
arches.
v86d source code can be downloaded from the following website:
http://dev.gentoo.org/~spock/projects/uvesafb
https://github.com/mjanusz/v86d
Please refer to the v86d documentation for detailed configuration and
installation instructions.
@ -177,7 +178,7 @@ from the Video BIOS if you set pixclock to 0 in fb_var_screeninfo.
--
Michal Januszewski <spock@gentoo.org>
Last updated: 2009-03-30
Last updated: 2017-10-10
Documentation of the uvesafb options is loosely based on vesafb.txt.

2
MAINTAINERS
View File

@ -15395,7 +15395,7 @@ S: Maintained
UVESAFB DRIVER
M: Michal Januszewski <spock@gentoo.org>
L: linux-fbdev@vger.kernel.org
W: http://dev.gentoo.org/~spock/projects/uvesafb/
W: https://github.com/mjanusz/v86d
S: Maintained
F: Documentation/fb/uvesafb.txt
F: drivers/video/fbdev/uvesafb.*

6
drivers/video/fbdev/efifb.c
View File

@ -42,6 +42,7 @@ struct bmp_dib_header {
u32 colors_important;
} __packed;
static bool use_bgrt = true;
static bool request_mem_succeeded = false;
static u64 mem_flags = EFI_MEMORY_WC | EFI_MEMORY_UC;
@ -160,6 +161,9 @@ static void efifb_show_boot_graphics(struct fb_info *info)
void *bgrt_image = NULL;
u8 *dst = info->screen_base;
if (!use_bgrt)
return;
if (!bgrt_tab.image_address) {
pr_info("efifb: No BGRT, not showing boot graphics\n");
return;
@ -290,6 +294,8 @@ static int efifb_setup(char *options)
screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0);
else if (!strcmp(this_opt, "nowc"))
mem_flags &= ~EFI_MEMORY_WC;
else if (!strcmp(this_opt, "nobgrt"))
use_bgrt = false;
}
}

5
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
View File

@ -496,6 +496,9 @@ static int omapfb_memory_read(struct fb_info *fbi,
if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
return -EFAULT;
if (mr->w > 4096 || mr->h > 4096)
return -EINVAL;
if (mr->w * mr->h * 3 > mr->buffer_size)
return -EINVAL;
@ -509,7 +512,7 @@ static int omapfb_memory_read(struct fb_info *fbi,
mr->x, mr->y, mr->w, mr->h);
if (r > 0) {
if (copy_to_user(mr->buffer, buf, mr->buffer_size))
if (copy_to_user(mr->buffer, buf, r))
r = -EFAULT;
}

6
drivers/video/fbdev/pxa168fb.c
View File

@ -712,7 +712,7 @@ static int pxa168fb_probe(struct platform_device *pdev)
/*
* enable controller clock
*/
clk_enable(fbi->clk);
clk_prepare_enable(fbi->clk);
pxa168fb_set_par(info);
@ -767,7 +767,7 @@ static int pxa168fb_probe(struct platform_device *pdev)
failed_free_cmap:
fb_dealloc_cmap(&info->cmap);
failed_free_clk:
clk_disable(fbi->clk);
clk_disable_unprepare(fbi->clk);
failed_free_fbmem:
dma_free_coherent(fbi->dev, info->fix.smem_len,
info->screen_base, fbi->fb_start_dma);
@ -807,7 +807,7 @@ static int pxa168fb_remove(struct platform_device *pdev)
dma_free_wc(fbi->dev, PAGE_ALIGN(info->fix.smem_len),
info->screen_base, info->fix.smem_start);
clk_disable(fbi->clk);
clk_disable_unprepare(fbi->clk);
framebuffer_release(info);

2
drivers/video/fbdev/stifb.c
View File

@ -1157,7 +1157,7 @@ static int __init stifb_init_fb(struct sti_struct *sti, int bpp_pref)
dev_name);
goto out_err0;
}
/* fall though */
/* fall through */
case S9000_ID_ARTIST:
case S9000_ID_HCRX:
case S9000_ID_TIMBER: