The patch titled
Subject: drivers/char/mem.c: simplify DEVPORT configuration
has been added to the -mm tree. Its filename is
drivers-char-mem-simplify-devport-configuration.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/drivers-char-mem-simplify-devport-configuration.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/drivers-char-mem-simplify-devport-configuration.patch
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------------------------------------------------------
From: Rob Ward <robert.ward114@xxxxxxxxxxxxxx>
Subject: drivers/char/mem.c: simplify DEVPORT configuration
Simplify the use of CONFIG_DEVPORT by making the port_fops
so that it includes __maybe_unused.
This enabled the multiple #ifdef's used for this structure
to be removed and brings it in line with the use of CONFIG_DEVMEM
This change should introduce no functional changes.
Signed-off-by: Rob Ward <robert.ward114@xxxxxxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/mem.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff -puN drivers/char/mem.c~drivers-char-mem-simplify-devport-configuration drivers/char/mem.c
--- a/drivers/char/mem.c~drivers-char-mem-simplify-devport-configuration
+++ a/drivers/char/mem.c
@@ -542,7 +542,6 @@ static ssize_t write_kmem(struct file *f
return virtr + wrote ? : err;
}
-#ifdef CONFIG_DEVPORT
static ssize_t read_port(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
@@ -583,7 +582,6 @@ static ssize_t write_port(struct file *f
*ppos = i;
return tmp-buf;
}
-#endif
static ssize_t read_null(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
@@ -738,14 +736,12 @@ static const struct file_operations null
.splice_write = splice_write_null,
};
-#ifdef CONFIG_DEVPORT
-static const struct file_operations port_fops = {
+static const struct file_operations __maybe_unused port_fops = {
.llseek = memory_lseek,
.read = read_port,
.write = write_port,
.open = open_port,
};
-#endif
static const struct file_operations zero_fops = {
.llseek = zero_lseek,
_
Patches currently in -mm which might be from robert.ward114@xxxxxxxxxxxxxx are
origin.patch
drivers-char-mem-make-dev-mem-an-optional-device.patch
drivers-char-mem-simplify-devkmem-configuration.patch
drivers-char-mem-simplify-devport-configuration.patch
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