diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2023-04-28 15:24:39 +0300 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2023-05-08 16:28:33 +0300 |
| commit | ada45eda25f28115bd14680b15aa1144e268f266 (patch) | |
| tree | fe75bda5d44a7899a7340c5effd321fd399a8071 /drivers/video/fbdev/broadsheetfb.c | |
| parent | f5eccc49d88ba516cc3433ae4f5f3ace3b125cbd (diff) | |
| download | linux-ada45eda25f28115bd14680b15aa1144e268f266.tar.xz | |
fbdev/broadsheetfb: Use struct fb_info.screen_buffer
Use info->screen_buffer when reading and writing framebuffers in
system memory. It's the correct pointer for this address space.
The struct fb_info has a union to store the framebuffer memory. This can
either be info->screen_base if the framebuffer is stored in I/O memory,
or info->screen_buffer if the framebuffer is stored in system memory.
As the driver operates on the latter address space, it is wrong to use
.screen_base and .screen_buffer must be used instead. This also gets
rid of casting needed due to not using the correct data type.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230428122452.4856-7-tzimmermann@suse.de
Diffstat (limited to 'drivers/video/fbdev/broadsheetfb.c')
| -rw-r--r-- | drivers/video/fbdev/broadsheetfb.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/video/fbdev/broadsheetfb.c b/drivers/video/fbdev/broadsheetfb.c index 55e62dd96f9b..65dc86b7081e 100644 --- a/drivers/video/fbdev/broadsheetfb.c +++ b/drivers/video/fbdev/broadsheetfb.c @@ -824,7 +824,7 @@ static void broadsheet_init_display(struct broadsheetfb_par *par) broadsheet_burst_write(par, (panel_table[par->panel_index].w * panel_table[par->panel_index].h)/2, - (u16 *) par->info->screen_base); + (u16 *)par->info->screen_buffer); broadsheet_send_command(par, BS_CMD_LD_IMG_END); @@ -865,7 +865,7 @@ static void broadsheetfb_dpy_update_pages(struct broadsheetfb_par *par, u16 y1, u16 y2) { u16 args[5]; - unsigned char *buf = (unsigned char *)par->info->screen_base; + unsigned char *buf = par->info->screen_buffer; mutex_lock(&(par->io_lock)); /* y1 must be a multiple of 4 so drop the lower bits */ @@ -913,7 +913,7 @@ static void broadsheetfb_dpy_update(struct broadsheetfb_par *par) broadsheet_send_cmdargs(par, BS_CMD_WR_REG, 1, args); broadsheet_burst_write(par, (panel_table[par->panel_index].w * panel_table[par->panel_index].h)/2, - (u16 *) par->info->screen_base); + (u16 *)par->info->screen_buffer); broadsheet_send_command(par, BS_CMD_LD_IMG_END); @@ -1033,7 +1033,7 @@ static ssize_t broadsheetfb_write(struct fb_info *info, const char __user *buf, count = total_size - p; } - dst = (void *)(info->screen_base + p); + dst = info->screen_buffer + p; if (copy_from_user(dst, buf, count)) err = -EFAULT; @@ -1109,7 +1109,7 @@ static int broadsheetfb_probe(struct platform_device *dev) if (!videomemory) goto err_fb_rel; - info->screen_base = (char *)videomemory; + info->screen_buffer = videomemory; info->fbops = &broadsheetfb_ops; broadsheetfb_var.xres = dpyw; @@ -1205,7 +1205,7 @@ static int broadsheetfb_remove(struct platform_device *dev) fb_deferred_io_cleanup(info); par->board->cleanup(par); fb_dealloc_cmap(&info->cmap); - vfree((void *)info->screen_base); + vfree(info->screen_buffer); module_put(par->board->owner); framebuffer_release(info); } |