patch-2.3.43 linux/drivers/char/mem.c

• Lines: 180
• Date: Wed Feb 9 18:48:03 2000
• Orig file: v2.3.42/linux/drivers/char/mem.c
• Orig date: Fri Jan 28 15:09:07 2000

diff -u --recursive --new-file v2.3.42/linux/drivers/char/mem.c linux/drivers/char/mem.c
@@ -145,11 +145,15 @@
 	return do_write_mem(file, __va(p), p, buf, count, ppos);
 }
 
+#ifndef pgprot_noncached
+
 /*
  * This should probably be per-architecture in <asm/pgtable.h>
  */
-static inline unsigned long pgprot_noncached(unsigned long prot)
+static inline pgprot_t pgprot_noncached(pgprot_t _prot)
 {
+	unsigned long prot = pgprot_val(_prot);
+
 #if defined(__i386__)
 	/* On PPro and successors, PCD alone doesn't always mean 
 	    uncached because of interactions with the MTRRs. PCD | PWT
@@ -173,9 +177,11 @@
 	prot &= ~(L_PTE_CACHEABLE | L_PTE_BUFFERABLE);
 #endif
 
-	return prot;
+	return __pgprot(prot);
 }
 
+#endif /* !pgprot_noncached */
+
 /*
  * Architectures vary in how they handle caching for addresses 
  * outside of main memory.
@@ -208,8 +214,7 @@
 	 * done non-cached.
 	 */
 	if (noncached_address(offset) || (file->f_flags & O_SYNC))
-		pgprot_val(vma->vm_page_prot) 
-			= pgprot_noncached(pgprot_val(vma->vm_page_prot));
+		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
 	/*
 	 * Don't dump addresses that are not real memory to a core file.
@@ -486,87 +491,47 @@
 #define open_kmem	open_mem
 
 static struct file_operations mem_fops = {
-	memory_lseek,
-	read_mem,
-	write_mem,
-	NULL,		/* mem_readdir */
-	NULL,		/* mem_poll */
-	NULL,		/* mem_ioctl */
-	mmap_mem,
-	open_mem,
-	NULL,		/* flush */
-	NULL,		/* no special release code */
-	NULL		/* fsync */
+	llseek:		memory_lseek,
+	read:		read_mem,
+	write:		write_mem,
+	mmap:		mmap_mem,
+	open:		open_mem,
 };
 
 static struct file_operations kmem_fops = {
-	memory_lseek,
-	read_kmem,
-	write_kmem,
-	NULL,		/* kmem_readdir */
-	NULL,		/* kmem_poll */
-	NULL,		/* kmem_ioctl */
-	mmap_kmem,
-	open_kmem,
-	NULL,		/* flush */
-	NULL,		/* no special release code */
-	NULL		/* fsync */
+	llseek:		memory_lseek,
+	read:		read_kmem,
+	write:		write_kmem,
+	mmap:		mmap_kmem,
+	open:		open_kmem,
 };
 
 static struct file_operations null_fops = {
-	null_lseek,
-	read_null,
-	write_null,
-	NULL,		/* null_readdir */
-	NULL,		/* null_poll */
-	NULL,		/* null_ioctl */
-	NULL,		/* null_mmap */
-	NULL,		/* no special open code */
-	NULL,		/* flush */
-	NULL,		/* no special release code */
-	NULL		/* fsync */
+	llseek:		null_lseek,
+	read:		read_null,
+	write:		write_null,
 };
 
 #if !defined(CONFIG_PPC) && !defined(__mc68000__)
 static struct file_operations port_fops = {
-	memory_lseek,
-	read_port,
-	write_port,
-	NULL,		/* port_readdir */
-	NULL,		/* port_poll */
-	NULL,		/* port_ioctl */
-	NULL,		/* port_mmap */
-	open_port,
-	NULL,		/* flush */
-	NULL,		/* no special release code */
-	NULL		/* fsync */
+	llseek:		memory_lseek,
+	read:		read_port,
+	write:		write_port,
+	open:		open_port,
 };
 #endif
 
 static struct file_operations zero_fops = {
-	zero_lseek,
-	read_zero,
-	write_zero,
-	NULL,		/* zero_readdir */
-	NULL,		/* zero_poll */
-	NULL,		/* zero_ioctl */
-	mmap_zero,
-	NULL,		/* no special open code */
-	NULL,		/* flush */
-	NULL		/* no special release code */
+	llseek:		zero_lseek,
+	read:		read_zero,
+	write:		write_zero,
+	mmap:		mmap_zero,
 };
 
 static struct file_operations full_fops = {
-	full_lseek,
-	read_full,
-	write_full,
-	NULL,		/* full_readdir */
-	NULL,		/* full_poll */
-	NULL,		/* full_ioctl */	
-	NULL,		/* full_mmap */
-	NULL,		/* no special open code */
-	NULL,		/* flush */
-	NULL		/* no special release code */
+	llseek:		full_lseek,
+	read:		read_full,
+	write:		write_full,
 };
 
 static int memory_open(struct inode * inode, struct file * filp)
@@ -607,17 +572,7 @@
 }
 
 static struct file_operations memory_fops = {
-	NULL,		/* lseek */
-	NULL,		/* read */
-	NULL,		/* write */
-	NULL,		/* readdir */
-	NULL,		/* poll */
-	NULL,		/* ioctl */
-	NULL,		/* mmap */
-	memory_open,	/* just a selector for the real open */
-	NULL,		/* flush */
-	NULL,		/* release */
-	NULL		/* fsync */
+	open:		memory_open,	/* just a selector for the real open */
 };
 
 int __init chr_dev_init(void)
@@ -630,7 +585,7 @@
 	usb_init();
 #endif
 #ifdef CONFIG_I2C
-        i2c_init_all();
+	i2c_init_all();
 #endif
 #if defined (CONFIG_FB)
 	fbmem_init();