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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2023-04-28 14:24:36 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2023-05-08 15:28:32 +0200 |
| commit | cb18dfa930acaced019bfb8b9f1b5be0b66ded96 (patch) | |
| tree | f86a9ca8d96415a28572021a4b5500cec6619742 /drivers/hid | |
| parent | 029cd092f23fb1b372adf8697be1846a1df0492d (diff) | |
| download | linux-stable-cb18dfa930acaced019bfb8b9f1b5be0b66ded96.tar.gz linux-stable-cb18dfa930acaced019bfb8b9f1b5be0b66ded96.tar.bz2 linux-stable-cb18dfa930acaced019bfb8b9f1b5be0b66ded96.zip | |
hid/hid-picolcd_fb: 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/20230428122452.4856-4-tzimmermann@suse.de
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-picolcd_fb.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hid/hid-picolcd_fb.c b/drivers/hid/hid-picolcd_fb.c index de61c08fabea..dabcd054dad9 100644 --- a/drivers/hid/hid-picolcd_fb.c +++ b/drivers/hid/hid-picolcd_fb.c @@ -221,7 +221,7 @@ int picolcd_fb_reset(struct picolcd_data *data, int clear) return 0; } -/* Update fb_vbitmap from the screen_base and send changed tiles to device */ +/* Update fb_vbitmap from the screen_buffer and send changed tiles to device */ static void picolcd_fb_update(struct fb_info *info) { int chip, tile, n; @@ -541,7 +541,7 @@ int picolcd_init_framebuffer(struct picolcd_data *data) dev_err(dev, "can't get a free page for framebuffer\n"); goto err_nomem; } - info->screen_base = (char __force __iomem *)fbdata->bitmap; + info->screen_buffer = fbdata->bitmap; info->fix.smem_start = (unsigned long)fbdata->bitmap; memset(fbdata->vbitmap, 0xff, PICOLCDFB_SIZE); data->fb_info = info; |