fbdev/efifb: Add struct efifb_par for driver data

The efifb_par structure holds the palette for efifb. It will also
be useful for storing the device's aperture range.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221219160516.23436-11-tzimmermann@suse.de

diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 16c1aaa..694013f 100644 (file)
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -49,6 +49,10 @@ static u64 mem_flags = EFI_MEMORY_WC | EFI_MEMORY_UC;
 
 static struct pci_dev *efifb_pci_dev;  /* dev with BAR covering the efifb */
 
+struct efifb_par {
+       u32 pseudo_palette[16];
+};
+
 static struct fb_var_screeninfo efifb_defined = {
        .activate               = FB_ACTIVATE_NOW,
        .height                 = -1,
@@ -351,6 +355,7 @@ static u64 bar_offset;
 static int efifb_probe(struct platform_device *dev)
 {
        struct fb_info *info;
+       struct efifb_par *par;
        int err, orientation;
        unsigned int size_vmode;
        unsigned int size_remap;
@@ -447,14 +452,14 @@ static int efifb_probe(struct platform_device *dev)
                        efifb_fix.smem_start);
        }
 
-       info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
+       info = framebuffer_alloc(sizeof(*par), &dev->dev);
        if (!info) {
                err = -ENOMEM;
                goto err_release_mem;
        }
        platform_set_drvdata(dev, info);
-       info->pseudo_palette = info->par;
-       info->par = NULL;
+       par = info->par;
+       info->pseudo_palette = par->pseudo_palette;
 
        info->apertures = alloc_apertures(1);
        if (!info->apertures) {