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. Signed-off-by: Thomas Zimmermann <[email protected]> --- drivers/video/fbdev/smscufx.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/video/fbdev/smscufx.c b/drivers/video/fbdev/smscufx.c index 2ad6e98ce10d..17cec62cc65d 100644 --- a/drivers/video/fbdev/smscufx.c +++ b/drivers/video/fbdev/smscufx.c @@ -1150,7 +1150,7 @@ static void ufx_free_framebuffer(struct ufx_data *dev) fb_dealloc_cmap(&info->cmap); if (info->monspecs.modedb) fb_destroy_modedb(info->monspecs.modedb); - vfree(info->screen_base); + vfree(info->screen_buffer); fb_destroy_modelist(&info->modelist); @@ -1257,7 +1257,7 @@ static int ufx_ops_set_par(struct fb_info *info) if ((result == 0) && (dev->fb_count == 0)) { /* paint greenscreen */ - pix_framebuffer = (u16 *) info->screen_base; + pix_framebuffer = (u16 *)info->screen_buffer; for (i = 0; i < info->fix.smem_len / 2; i++) pix_framebuffer[i] = 0x37e6; @@ -1303,7 +1303,7 @@ static int ufx_realloc_framebuffer(struct ufx_data *dev, struct fb_info *info) { int old_len = info->fix.smem_len; int new_len; - unsigned char *old_fb = info->screen_base; + unsigned char *old_fb = info->screen_buffer; unsigned char *new_fb; pr_debug("Reallocating framebuffer. Addresses will change!"); @@ -1318,12 +1318,12 @@ static int ufx_realloc_framebuffer(struct ufx_data *dev, struct fb_info *info) if (!new_fb) return -ENOMEM; - if (info->screen_base) { + if (info->screen_buffer) { memcpy(new_fb, old_fb, old_len); - vfree(info->screen_base); + vfree(info->screen_buffer); } - info->screen_base = new_fb; + info->screen_buffer = new_fb; info->fix.smem_len = PAGE_ALIGN(new_len); info->fix.smem_start = (unsigned long) new_fb; info->flags = smscufx_info_flags; @@ -1746,7 +1746,7 @@ static int ufx_usb_probe(struct usb_interface *interface, atomic_set(&dev->usb_active, 0); setup_modes: fb_destroy_modedb(info->monspecs.modedb); - vfree(info->screen_base); + vfree(info->screen_buffer); fb_destroy_modelist(&info->modelist); error: fb_dealloc_cmap(&info->cmap); -- 2.40.0
