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path: root/drivers/gpu/drm/sysfb/vesadrm.c
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Diffstat (limited to 'drivers/gpu/drm/sysfb/vesadrm.c')
-rw-r--r--drivers/gpu/drm/sysfb/vesadrm.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/gpu/drm/sysfb/vesadrm.c b/drivers/gpu/drm/sysfb/vesadrm.c
index 4d62c78e7d1e..f7532db3831f 100644
--- a/drivers/gpu/drm/sysfb/vesadrm.c
+++ b/drivers/gpu/drm/sysfb/vesadrm.c
@@ -362,14 +362,19 @@ static struct vesadrm_device *vesadrm_device_create(struct drm_driver *drv,
if (!__screen_info_vbe_mode_nonvga(si)) {
vesa->cmap_write = vesadrm_vga_cmap_write;
-#if defined(CONFIG_X86_32)
} else {
+#if defined(CONFIG_X86_32)
phys_addr_t pmi_base = __screen_info_vesapm_info_base(si);
- const u16 *pmi_addr = phys_to_virt(pmi_base);
- vesa->pmi.PrimaryPalette = (u8 *)pmi_addr + pmi_addr[2];
- vesa->cmap_write = vesadrm_pmi_cmap_write;
+ if (pmi_base) {
+ const u16 *pmi_addr = phys_to_virt(pmi_base);
+
+ vesa->pmi.PrimaryPalette = (u8 *)pmi_addr + pmi_addr[2];
+ vesa->cmap_write = vesadrm_pmi_cmap_write;
+ } else
#endif
+ if (format->is_color_indexed)
+ drm_warn(dev, "hardware palette is unchangeable, colors may be incorrect\n");
}
#ifdef CONFIG_X86