linux-kernel - [PATCH 3/8] auto, proc: use "auto" instead of quite chatty macros

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Message-Id: <20230518154648.581643-3-adobriyan@gmail.com>
Date:   Thu, 18 May 2023 18:46:44 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     akpm@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org, adobriyan@...il.com
Subject: [PATCH 3/8] auto, proc: use "auto" instead of quite chatty macros

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---
 fs/proc/inode.c | 32 ++++++++------------------------
 1 file changed, 8 insertions(+), 24 deletions(-)

diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index f495fdb39151..88644891b876 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -309,9 +309,7 @@ static ssize_t proc_reg_read_iter(struct kiocb *iocb, struct iov_iter *iter)
 
 static ssize_t pde_read(struct proc_dir_entry *pde, struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
-	typeof_member(struct proc_ops, proc_read) read;
-
-	read = pde->proc_ops->proc_read;
+	auto read = pde->proc_ops->proc_read;
 	if (read)
 		return read(file, buf, count, ppos);
 	return -EIO;
@@ -333,9 +331,7 @@ static ssize_t proc_reg_read(struct file *file, char __user *buf, size_t count,
 
 static ssize_t pde_write(struct proc_dir_entry *pde, struct file *file, const char __user *buf, size_t count, loff_t *ppos)
 {
-	typeof_member(struct proc_ops, proc_write) write;
-
-	write = pde->proc_ops->proc_write;
+	auto write = pde->proc_ops->proc_write;
 	if (write)
 		return write(file, buf, count, ppos);
 	return -EIO;
@@ -357,9 +353,7 @@ static ssize_t proc_reg_write(struct file *file, const char __user *buf, size_t
 
 static __poll_t pde_poll(struct proc_dir_entry *pde, struct file *file, struct poll_table_struct *pts)
 {
-	typeof_member(struct proc_ops, proc_poll) poll;
-
-	poll = pde->proc_ops->proc_poll;
+	auto poll = pde->proc_ops->proc_poll;
 	if (poll)
 		return poll(file, pts);
 	return DEFAULT_POLLMASK;
@@ -381,9 +375,7 @@ static __poll_t proc_reg_poll(struct file *file, struct poll_table_struct *pts)
 
 static long pde_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsigned long arg)
 {
-	typeof_member(struct proc_ops, proc_ioctl) ioctl;
-
-	ioctl = pde->proc_ops->proc_ioctl;
+	auto ioctl = pde->proc_ops->proc_ioctl;
 	if (ioctl)
 		return ioctl(file, cmd, arg);
 	return -ENOTTY;
@@ -406,9 +398,7 @@ static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigne
 #ifdef CONFIG_COMPAT
 static long pde_compat_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsigned long arg)
 {
-	typeof_member(struct proc_ops, proc_compat_ioctl) compat_ioctl;
-
-	compat_ioctl = pde->proc_ops->proc_compat_ioctl;
+	auto compat_ioctl = pde->proc_ops->proc_compat_ioctl;
 	if (compat_ioctl)
 		return compat_ioctl(file, cmd, arg);
 	return -ENOTTY;
@@ -430,9 +420,7 @@ static long proc_reg_compat_ioctl(struct file *file, unsigned int cmd, unsigned
 
 static int pde_mmap(struct proc_dir_entry *pde, struct file *file, struct vm_area_struct *vma)
 {
-	typeof_member(struct proc_ops, proc_mmap) mmap;
-
-	mmap = pde->proc_ops->proc_mmap;
+	auto mmap = pde->proc_ops->proc_mmap;
 	if (mmap)
 		return mmap(file, vma);
 	return -EIO;
@@ -457,9 +445,7 @@ pde_get_unmapped_area(struct proc_dir_entry *pde, struct file *file, unsigned lo
 			   unsigned long len, unsigned long pgoff,
 			   unsigned long flags)
 {
-	typeof_member(struct proc_ops, proc_get_unmapped_area) get_area;
-
-	get_area = pde->proc_ops->proc_get_unmapped_area;
+	auto get_area = pde->proc_ops->proc_get_unmapped_area;
 #ifdef CONFIG_MMU
 	if (!get_area)
 		get_area = current->mm->get_unmapped_area;
@@ -555,9 +541,7 @@ static int proc_reg_release(struct inode *inode, struct file *file)
 	struct pde_opener *pdeo;
 
 	if (pde_is_permanent(pde)) {
-		typeof_member(struct proc_ops, proc_release) release;
-
-		release = pde->proc_ops->proc_release;
+		auto release = pde->proc_ops->proc_release;
 		if (release) {
 			return release(inode, file);
 		}
-- 
2.40.1