Merge tag 'drm-misc-next-2023-05-11' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 6.5:

UAPI Changes:

Cross-subsystem Changes:
 - arch: Consolidate <asm/fb.h>

Core Changes:
 - aperture: Ignore firmware framebuffers with non-primary devices
 - fbdev: Use fbdev's I/O helpers
 - sysfs: Expose DRM connector ID
 - tests: More tests for drm_rect

Driver Changes:
 - armada: Implement fbdev emulation as a client
 - bridge:
   - fsl-ldb: Support i.MX6SX
   - lt9211: Remove blanking packets
   - lt9611: Remove blanking packets
   - tc358768: Implement input bus formats reporting, fix various
     timings and clocks settings
   - ti-sn65dsi86: Implement wait_hpd_asserted
 - nouveau: Improve NULL pointer checks before dereference
 - panel:
   - nt36523: Support Lenovo J606F
   - st7703: Support Anbernic RG353V-V2
   - new panels: InnoLux G070ACE-L01
 - sun4i: Fix MIPI-DSI dotclock
 - vc4: RGB Range toggle property, BT601 and BT2020 support for HDMI
 - vkms: Convert to drmm helpers, Add reflection and rotation support

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/2pxmxdzsk2ekjy6xvbpj67zrhtwvkkhfspuvdm5pfm5i54hed6@sooct7yq6z4w

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/video/fbdev/arcfb.c b/drivers/video/fbdev/arcfb.c
index 024d0ee4f04f..91ac29b6a89c 100644
--- a/drivers/video/fbdev/arcfb.c
+++ b/drivers/video/fbdev/arcfb.c
@@ -260,7 +260,7 @@ static void arcfb_lcd_update_page(struct arcfb_par *par, unsigned int upper,
 	ks108_set_yaddr(par, chipindex, upper/8);
 
 	linesize = par->info->var.xres/8;
-	src = (unsigned char __force *) par->info->screen_base + (left/8) +
+	src = (unsigned char *)par->info->screen_buffer + (left/8) +
 		(upper * linesize);
 	ks108_set_xaddr(par, chipindex, left);
 
@@ -451,6 +451,9 @@ static ssize_t arcfb_write(struct fb_info *info, const char __user *buf,
 	struct arcfb_par *par;
 	unsigned int xres;
 
+	if (!info->screen_buffer)
+		return -ENODEV;
+
 	p = *ppos;
 	par = info->par;
 	xres = info->var.xres;
@@ -468,7 +471,7 @@ static ssize_t arcfb_write(struct fb_info *info, const char __user *buf,
 	if (count) {
 		char *base_addr;
 
-		base_addr = (char __force *)info->screen_base;
+		base_addr = info->screen_buffer;
 		count -= copy_from_user(base_addr + p, buf, count);
 		*ppos += count;
 		err = -EFAULT;
@@ -525,7 +528,7 @@ static int arcfb_probe(struct platform_device *dev)
 	if (!info)
 		goto err_fb_alloc;
 
-	info->screen_base = (char __iomem *)videomemory;
+	info->screen_buffer = videomemory;
 	info->fbops = &arcfb_ops;
 
 	info->var = arcfb_var;
@@ -598,7 +601,7 @@ static int arcfb_remove(struct platform_device *dev)
 		unregister_framebuffer(info);
 		if (irq)
 			free_irq(((struct arcfb_par *)(info->par))->irq, info);
-		vfree((void __force *)info->screen_base);
+		vfree(info->screen_buffer);
 		framebuffer_release(info);
 	}
 	return 0;