diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2023-04-28 15:24:40 +0300 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2023-05-08 16:28:33 +0300 |
| commit | 3907e683c09e36e52a6faf5ff91e8834e1bb2a85 (patch) | |
| tree | 21b3882e33fb81a8b6d3c474ef48d8042331608e /drivers | |
| parent | ada45eda25f28115bd14680b15aa1144e268f266 (diff) | |
| download | linux-3907e683c09e36e52a6faf5ff91e8834e1bb2a85.tar.xz | |
fbdev/hecubafb: 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/20230428122452.4856-8-tzimmermann@suse.de
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/fbdev/hecubafb.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/video/fbdev/hecubafb.c b/drivers/video/fbdev/hecubafb.c index eb1eaadc1bbb..ddfa2853cc41 100644 --- a/drivers/video/fbdev/hecubafb.c +++ b/drivers/video/fbdev/hecubafb.c @@ -102,7 +102,7 @@ static void apollo_send_command(struct hecubafb_par *par, unsigned char data) static void hecubafb_dpy_update(struct hecubafb_par *par) { int i; - unsigned char *buf = (unsigned char __force *)par->info->screen_base; + unsigned char *buf = par->info->screen_buffer; apollo_send_command(par, APOLLO_START_NEW_IMG); @@ -183,7 +183,7 @@ static ssize_t hecubafb_write(struct fb_info *info, const char __user *buf, count = total_size - p; } - dst = (void __force *) (info->screen_base + p); + dst = info->screen_buffer + p; if (copy_from_user(dst, buf, count)) err = -EFAULT; @@ -239,7 +239,7 @@ static int hecubafb_probe(struct platform_device *dev) if (!info) goto err_fballoc; - info->screen_base = (char __force __iomem *)videomemory; + info->screen_buffer = videomemory; info->fbops = &hecubafb_ops; info->var = hecubafb_var; @@ -287,7 +287,7 @@ static int hecubafb_remove(struct platform_device *dev) struct hecubafb_par *par = info->par; fb_deferred_io_cleanup(info); unregister_framebuffer(info); - vfree((void __force *)info->screen_base); + vfree(info->screen_buffer); if (par->board->remove) par->board->remove(par); module_put(par->board->owner); |