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authorStephen Boyd <sboyd@codeaurora.org>2012-04-05 23:25:11 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2012-04-06 00:25:50 +0200
commit234e340582901211f40d8c732afc49f0630ecf05 (patch)
tree753076500dfd883b3db56d4f5410af31d8945623 /drivers/acpi
parentscripts/coccinelle/api/simple_open.cocci: semantic patch for simple_open() (diff)
downloadlinux-234e340582901211f40d8c732afc49f0630ecf05.tar.xz
linux-234e340582901211f40d8c732afc49f0630ecf05.zip
simple_open: automatically convert to simple_open()
Many users of debugfs copy the implementation of default_open() when they want to support a custom read/write function op. This leads to a proliferation of the default_open() implementation across the entire tree. Now that the common implementation has been consolidated into libfs we can replace all the users of this function with simple_open(). This replacement was done with the following semantic patch: <smpl> @ open @ identifier open_f != simple_open; identifier i, f; @@ -int open_f(struct inode *i, struct file *f) -{ ( -if (i->i_private) -f->private_data = i->i_private; | -f->private_data = i->i_private; ) -return 0; -} @ has_open depends on open @ identifier fops; identifier open.open_f; @@ struct file_operations fops = { ... -.open = open_f, +.open = simple_open, ... }; </smpl> [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/ec_sys.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/acpi/ec_sys.c b/drivers/acpi/ec_sys.c
index b258cab9061c..7586544fddb4 100644
--- a/drivers/acpi/ec_sys.c
+++ b/drivers/acpi/ec_sys.c
@@ -27,12 +27,6 @@ MODULE_PARM_DESC(write_support, "Dangerous, reboot and removal of battery may "
static struct dentry *acpi_ec_debugfs_dir;
-static int acpi_ec_open_io(struct inode *i, struct file *f)
-{
- f->private_data = i->i_private;
- return 0;
-}
-
static ssize_t acpi_ec_read_io(struct file *f, char __user *buf,
size_t count, loff_t *off)
{
@@ -95,7 +89,7 @@ static ssize_t acpi_ec_write_io(struct file *f, const char __user *buf,
static const struct file_operations acpi_ec_io_ops = {
.owner = THIS_MODULE,
- .open = acpi_ec_open_io,
+ .open = simple_open,
.read = acpi_ec_read_io,
.write = acpi_ec_write_io,
.llseek = default_llseek,