Merge tag 'm68k-for-v6.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:

 - Use the generic muldi3 libgcc function

 - Miscellaneous fixes and improvements

* tag 'm68k-for-v6.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: libgcc: Fix lvalue abuse in umul_ppmm()
  m68k: vga: Fix I/O defines
  zorro: Constify 'struct bin_attribute'
  m68k: atari: Use str_on_off() helper in atari_nvram_proc_read()
  m68k: Use kernel's generic muldi3 libgcc function

Author: torvalds

arch/Kconfig

@@ -1526,6 +1526,14 @@ config HAVE_ARCH_COMPILER_H
 	  linux/compiler-*.h in order to override macro definitions that those
 	  headers generally provide.
 
+config HAVE_ARCH_LIBGCC_H
+	bool
+	help
+	  An architecture can select this if it provides an
+	  asm/libgcc.h header that should be included after
+	  linux/libgcc.h in order to override macro definitions that
+	  header generally provides.
+
 config HAVE_ARCH_PREL32_RELOCATIONS
 	bool
 	help

arch/m68k/Kconfig

@@ -23,7 +23,9 @@ config M68K
 	select GENERIC_LIB_ASHLDI3
 	select GENERIC_LIB_ASHRDI3
 	select GENERIC_LIB_LSHRDI3
+	select GENERIC_LIB_MULDI3
 	select HAS_IOPORT if PCI || ISA || ATARI_ROM_ISA
+	select HAVE_ARCH_LIBGCC_H
 	select HAVE_ARCH_SECCOMP
 	select HAVE_ARCH_SECCOMP_FILTER
 	select HAVE_ASM_MODVERSIONS

arch/m68k/atari/nvram.c

@@ -16,7 +16,9 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/spinlock.h>
+#include <linux/string_choices.h>
 #include <linux/types.h>
+
 #include <asm/atarihw.h>
 #include <asm/atariints.h>
 
@@ -198,7 +200,7 @@ static void atari_nvram_proc_read(unsigned char *nvram, struct seq_file *seq,
 		seq_printf(seq, "0x%02x (undefined)\n", nvram[1]);
 
 	seq_printf(seq, "SCSI arbitration : %s\n",
-		   (nvram[16] & 0x80) ? "on" : "off");
+		   str_on_off(nvram[16] & 0x80));
 	seq_puts(seq, "SCSI host ID     : ");
 	if (nvram[16] & 0x80)
 		seq_printf(seq, "%d\n", nvram[16] & 7);
@@ -236,7 +238,7 @@ static void atari_nvram_proc_read(unsigned char *nvram, struct seq_file *seq,
 		   vmode & 16 ? "VGA" : "TV", vmode & 32 ? "PAL" : "NTSC");
 	seq_printf(seq,
 		   "                   %soverscan, compat. mode %s%s\n",
-		   vmode & 64 ? "" : "no ", vmode & 128 ? "on" : "off",
+		   vmode & 64 ? "" : "no ", str_on_off(vmode & 128),
 		   vmode & 256 ?
 		   (vmode & 16 ? ", line doubling" : ", half screen") : "");
 }

arch/m68k/include/asm/libgcc.h

@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_M68K_LIBGCC_H
+#define __ASM_M68K_LIBGCC_H
+
+#ifndef CONFIG_CPU_HAS_NO_MULDIV64
+/*
+ * For those 68K CPUs that support 64bit multiply define umul_ppm()
+ * for the common muldi3 libgcc helper function (in lib/muldi3.c).
+ * CPUs that don't have it (like the original 68000 and ColdFire)
+ * will fallback to using the C-coded version of umul_ppmm().
+ */
+#define umul_ppmm(w1, w0, u, v)				\
+	do {						\
+		unsigned long __u = (u), __v = (v);	\
+		unsigned long __w0, __w1;		\
+							\
+		__asm__ ("mulu%.l %3,%1:%0"		\
+			 : "=d" (__w0),			\
+			   "=d" (__w1)			\
+			 : "%0" (__u),			\
+			   "dmi" (__v));		\
+							\
+		(w0) = __w0; (w1) = __w1;		\
+	} while (0)
+#endif /* !CONFIG_CPU_HAS_NO_MULDIV64 */
+
+#endif /* __ASM_M68K_LIBGCC_H */

arch/m68k/include/asm/vga.h

@@ -9,7 +9,7 @@
  */
 #ifndef CONFIG_PCI
 
-#include <asm/raw_io.h>
+#include <asm/io.h>
 #include <asm/kmap.h>
 
 /*
@@ -29,9 +29,9 @@
 #define inw_p(port)		0
 #define outb_p(port, val)	do { } while (0)
 #define outw(port, val)		do { } while (0)
-#define readb			raw_inb
-#define writeb			raw_outb
-#define writew			raw_outw
+#define readb			__raw_readb
+#define writeb			__raw_writeb
+#define writew			__raw_writew
 
 #endif /* CONFIG_PCI */
 #endif /* _ASM_M68K_VGA_H */

arch/m68k/lib/Makefile

@@ -4,7 +4,7 @@
 # Makefile for m68k-specific library files..
 #
 
-lib-y	:= muldi3.o memcpy.o memset.o memmove.o
+lib-y	:= memcpy.o memset.o memmove.o
 
 lib-$(CONFIG_MMU) += uaccess.o
 lib-$(CONFIG_CPU_HAS_NO_MULDIV64) += mulsi3.o divsi3.o udivsi3.o

arch/m68k/lib/muldi3.c

@@ -81,7 +81,7 @@ static struct attribute *zorro_device_attrs[] = {
 };
 
 static ssize_t zorro_read_config(struct file *filp, struct kobject *kobj,
-				 struct bin_attribute *bin_attr,
+				 const struct bin_attribute *bin_attr,
 				 char *buf, loff_t off, size_t count)
 {
 	struct zorro_dev *z = to_zorro_dev(kobj_to_dev(kobj));
@@ -98,23 +98,23 @@ static ssize_t zorro_read_config(struct file *filp, struct kobject *kobj,
 	return memory_read_from_buffer(buf, count, &off, &cd, sizeof(cd));
 }
 
-static struct bin_attribute zorro_config_attr = {
+static const struct bin_attribute zorro_config_attr = {
 	.attr =	{
 		.name = "config",
 		.mode = S_IRUGO,
 	},
 	.size = sizeof(struct ConfigDev),
-	.read = zorro_read_config,
+	.read_new = zorro_read_config,
 };
 
-static struct bin_attribute *zorro_device_bin_attrs[] = {
+static const struct bin_attribute *const zorro_device_bin_attrs[] = {
 	&zorro_config_attr,
 	NULL
 };
 
 static const struct attribute_group zorro_device_attr_group = {
 	.attrs		= zorro_device_attrs,
-	.bin_attrs	= zorro_device_bin_attrs,
+	.bin_attrs_new	= zorro_device_bin_attrs,
 };
 
 const struct attribute_group *zorro_device_attribute_groups[] = {

drivers/zorro/zorro-sysfs.c

@@ -34,4 +34,8 @@ long long notrace __lshrdi3(long long u, word_type b);
 long long notrace __muldi3(long long u, long long v);
 word_type notrace __ucmpdi2(unsigned long long a, unsigned long long b);
 
+#ifdef CONFIG_HAVE_ARCH_LIBGCC_H
+#include <asm/libgcc.h>
+#endif
+
 #endif /* __ASM_LIBGCC_H */