--- zzzz-none-000/linux-3.10.107/drivers/tty/vt/consolemap.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/tty/vt/consolemap.c	2021-02-04 17:41:59.000000000 +0000
@@ -179,7 +179,6 @@
 	unsigned long	sum;
 	unsigned char	*inverse_translations[4];
 	u16		*inverse_trans_unicode;
-	int		readonly;
 };
 
 static struct uni_pagedir *dflt;
@@ -262,19 +261,22 @@
 	int m;
 	if (glyph < 0 || glyph >= MAX_GLYPH)
 		return 0;
-	else if (!(p = (struct uni_pagedir *)*conp->vc_uni_pagedir_loc))
-		return glyph;
-	else if (use_unicode) {
-		if (!p->inverse_trans_unicode)
+	else {
+		p = *conp->vc_uni_pagedir_loc;
+		if (!p)
 			return glyph;
-		else
-			return p->inverse_trans_unicode[glyph];
-	} else {
-		m = inv_translate[conp->vc_num];
-		if (!p->inverse_translations[m])
-			return glyph;
-		else
-			return p->inverse_translations[m][glyph];
+		else if (use_unicode) {
+			if (!p->inverse_trans_unicode)
+				return glyph;
+			else
+				return p->inverse_trans_unicode[glyph];
+			} else {
+			m = inv_translate[conp->vc_num];
+			if (!p->inverse_translations[m])
+				return glyph;
+			else
+				return p->inverse_translations[m][glyph];
+			}
 	}
 }
 EXPORT_SYMBOL_GPL(inverse_translate);
@@ -287,7 +289,7 @@
 	for (i = 0; i < MAX_NR_CONSOLES; i++) {
 		if (!vc_cons_allocated(i))
 			continue;
-		p = (struct uni_pagedir *)*vc_cons[i].d->vc_uni_pagedir_loc;
+		p = *vc_cons[i].d->vc_uni_pagedir_loc;
 		if (p && p != q) {
 			set_inverse_transl(vc_cons[i].d, p, USER_MAP);
 			set_inverse_trans_unicode(vc_cons[i].d, p);
@@ -398,7 +400,8 @@
 
 	if (p == dflt) dflt = NULL;  
 	for (i = 0; i < 32; i++) {
-		if ((p1 = p->uni_pgdir[i]) != NULL) {
+		p1 = p->uni_pgdir[i];
+		if (p1 != NULL) {
 			for (j = 0; j < 32; j++)
 				kfree(p1[j]);
 			kfree(p1);
@@ -418,10 +421,10 @@
 {
 	struct uni_pagedir *p;
 
-	p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
+	p = *vc->vc_uni_pagedir_loc;
 	if (!p)
 		return;
-	*vc->vc_uni_pagedir_loc = 0;
+	*vc->vc_uni_pagedir_loc = NULL;
 	if (--p->refcount)
 		return;
 	con_release_unimap(p);
@@ -436,7 +439,7 @@
 	for (i = 0; i < MAX_NR_CONSOLES; i++) {
 		if (!vc_cons_allocated(i))
 			continue;
-		q = (struct uni_pagedir *)*vc_cons[i].d->vc_uni_pagedir_loc;
+		q = *vc_cons[i].d->vc_uni_pagedir_loc;
 		if (!q || q == p || q->sum != p->sum)
 			continue;
 		for (j = 0; j < 32; j++) {
@@ -459,7 +462,7 @@
 		}
 		if (j == 32) {
 			q->refcount++;
-			*conp->vc_uni_pagedir_loc = (unsigned long)q;
+			*conp->vc_uni_pagedir_loc = q;
 			con_release_unimap(p);
 			kfree(p);
 			return 1;
@@ -474,14 +477,16 @@
 	int i, n;
 	u16 **p1, *p2;
 
-	if (!(p1 = p->uni_pgdir[n = unicode >> 11])) {
+	p1 = p->uni_pgdir[n = unicode >> 11];
+	if (!p1) {
 		p1 = p->uni_pgdir[n] = kmalloc(32*sizeof(u16 *), GFP_KERNEL);
 		if (!p1) return -ENOMEM;
 		for (i = 0; i < 32; i++)
 			p1[i] = NULL;
 	}
 
-	if (!(p2 = p1[n = (unicode >> 6) & 0x1f])) {
+	p2 = p1[n = (unicode >> 6) & 0x1f];
+	if (!p2) {
 		p2 = p1[n] = kmalloc(64*sizeof(u16), GFP_KERNEL);
 		if (!p2) return -ENOMEM;
 		memset(p2, 0xff, 64*sizeof(u16)); /* No glyphs for the characters (yet) */
@@ -500,10 +505,7 @@
 {
 	struct uni_pagedir *p, *q;
 
-	p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
-	if (p && p->readonly)
-		return -EIO;
-
+	p = *vc->vc_uni_pagedir_loc;
 	if (!p || --p->refcount) {
 		q = kzalloc(sizeof(*p), GFP_KERNEL);
 		if (!q) {
@@ -512,7 +514,7 @@
 			return -ENOMEM;
 		}
 		q->refcount=1;
-		*vc->vc_uni_pagedir_loc = (unsigned long)q;
+		*vc->vc_uni_pagedir_loc = q;
 	} else {
 		if (p == dflt) dflt = NULL;
 		p->refcount++;
@@ -536,18 +538,18 @@
 	int err = 0, err1, i;
 	struct uni_pagedir *p, *q;
 
+	if (!ct)
+		return 0;
+
 	console_lock();
 
 	/* Save original vc_unipagdir_loc in case we allocate a new one */
-	p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
-	if (p->readonly) {
-		console_unlock();
-		return -EIO;
-	}
-	
-	if (!ct) {
-		console_unlock();
-		return 0;
+	p = *vc->vc_uni_pagedir_loc;
+
+	if (!p) {
+		err = -EINVAL;
+
+		goto out_unlock;
 	}
 	
 	if (p->refcount > 1) {
@@ -564,7 +566,7 @@
 		 * Since refcount was > 1, con_clear_unimap() allocated a
 		 * a new uni_pagedir for this vc.  Re: p != q
 		 */
-		q = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
+		q = *vc->vc_uni_pagedir_loc;
 
 		/*
 		 * uni_pgdir is a 32*32*64 table with rows allocated
@@ -573,10 +575,12 @@
 		 * entries from "p" (old) to "q" (new).
 		 */
 		l = 0;		/* unicode value */
-		for (i = 0; i < 32; i++)
-		if ((p1 = p->uni_pgdir[i]))
-			for (j = 0; j < 32; j++)
-			if ((p2 = p1[j])) {
+		for (i = 0; i < 32; i++) {
+		p1 = p->uni_pgdir[i];
+		if (p1)
+			for (j = 0; j < 32; j++) {
+			p2 = p1[j];
+			if (p2) {
 				for (k = 0; k < 64; k++, l++)
 				if (p2[k] != 0xffff) {
 					/*
@@ -586,7 +590,7 @@
 					err1 = con_insert_unipair(q, l, p2[k]);
 					if (err1) {
 						p->refcount++;
-						*vc->vc_uni_pagedir_loc = (unsigned long)p;
+						*vc->vc_uni_pagedir_loc = p;
 						con_release_unimap(q);
 						kfree(q);
 						console_unlock();
@@ -597,9 +601,11 @@
 				/* Account for row of 64 empty entries */
 				l += 64;
 			}
+		}
 		else
 			/* Account for empty table */
 			l += 32 * 64;
+		}
 
 		/*
 		 * Finished copying font table, set vc_uni_pagedir to new table
@@ -633,6 +639,7 @@
 		set_inverse_transl(vc, p, i); /* Update inverse translations */
 	set_inverse_trans_unicode(vc, p);
 
+out_unlock:
 	console_unlock();
 	return err;
 }
@@ -655,12 +662,12 @@
 	struct uni_pagedir *p;
 
 	if (dflt) {
-		p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
+		p = *vc->vc_uni_pagedir_loc;
 		if (p == dflt)
 			return 0;
 
 		dflt->refcount++;
-		*vc->vc_uni_pagedir_loc = (unsigned long)dflt;
+		*vc->vc_uni_pagedir_loc = dflt;
 		if (p && !--p->refcount) {
 			con_release_unimap(p);
 			kfree(p);
@@ -674,7 +681,7 @@
 	if (err)
 		return err;
     
-	p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
+	p = *vc->vc_uni_pagedir_loc;
 	q = dfont_unitable;
 	
 	for (i = 0; i < 256; i++)
@@ -685,7 +692,7 @@
 		}
 			
 	if (con_unify_unimap(vc, p)) {
-		dflt = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
+		dflt = *vc->vc_uni_pagedir_loc;
 		return err;
 	}
 
@@ -713,9 +720,9 @@
 	if (*dst_vc->vc_uni_pagedir_loc == *src_vc->vc_uni_pagedir_loc)
 		return 0;
 	con_free_unimap(dst_vc);
-	q = (struct uni_pagedir *)*src_vc->vc_uni_pagedir_loc;
+	q = *src_vc->vc_uni_pagedir_loc;
 	q->refcount++;
-	*dst_vc->vc_uni_pagedir_loc = (long)q;
+	*dst_vc->vc_uni_pagedir_loc = q;
 	return 0;
 }
 EXPORT_SYMBOL(con_copy_unimap);
@@ -737,11 +744,13 @@
 
 	ect = 0;
 	if (*vc->vc_uni_pagedir_loc) {
-		p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
-		for (i = 0; i < 32; i++)
-		if ((p1 = p->uni_pgdir[i]))
-			for (j = 0; j < 32; j++)
-			if ((p2 = *(p1++)))
+		p = *vc->vc_uni_pagedir_loc;
+		for (i = 0; i < 32; i++) {
+		p1 = p->uni_pgdir[i];
+		if (p1)
+			for (j = 0; j < 32; j++) {
+			p2 = *(p1++);
+			if (p2)
 				for (k = 0; k < 64; k++) {
 					if (*p2 < MAX_GLYPH && ect++ < ct) {
 						__put_user((u_short)((i<<11)+(j<<6)+k),
@@ -752,6 +761,8 @@
 					}
 					p2++;
 				}
+			}
+		}
 	}
 	__put_user(ect, uct);
 	console_unlock();
@@ -810,7 +821,7 @@
 	if (!*conp->vc_uni_pagedir_loc)
 		return -3;
 
-	p = (struct uni_pagedir *)*conp->vc_uni_pagedir_loc;  
+	p = *conp->vc_uni_pagedir_loc;
 	if ((p1 = p->uni_pgdir[ucs >> 11]) &&
 	    (p2 = p1[(ucs >> 6) & 0x1f]) &&
 	    (h = p2[ucs & 0x3f]) < MAX_GLYPH)