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Date: Fri, 24 Feb 2012 11:47:26 +0800
From: Dong Aisheng <aisheng.dong@...escale.com>
To: Stephen Warren <swarren@...dia.com>
CC: Linus Walleij <linus.walleij@...aro.org>,
Linus Walleij <linus.walleij@...ricsson.com>,
<B29396@...escale.com>, <s.hauer@...gutronix.de>,
<dongas86@...il.com>, <shawn.guo@...aro.org>,
<thomas.abraham@...aro.org>, <tony@...mide.com>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] pinctrl: Move pinctrl-maps debugfs file to
top-level
On Thu, Feb 23, 2012 at 05:04:40PM -0700, Stephen Warren wrote:
> The debugfs file pinctrl-maps is a system-wide file, not specific to any
> pin controller, so place it in the top-level directory.
>
Reasonable to me.
> Also, move the code implementing the file to keep the order of all the
> functions matching the order they're created in pinctrl_init_*debugfs().
> The only non-obvious change here is no private data is passed to
> debugfs_create_file() or single_open().
Looks correct.
Acked-by: Dong Aisheng <dong.aisheng@...aro.org>
Regards
Dong Aisheng
>
> Signed-off-by: Stephen Warren <swarren@...dia.com>
> ---
> drivers/pinctrl/core.c | 70 ++++++++++++++++++++++++------------------------
> 1 files changed, 35 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
> index 633b97e..376cede 100644
> --- a/drivers/pinctrl/core.c
> +++ b/drivers/pinctrl/core.c
> @@ -889,28 +889,6 @@ static int pinctrl_gpioranges_show(struct seq_file *s, void *what)
> return 0;
> }
>
> -static int pinctrl_maps_show(struct seq_file *s, void *what)
> -{
> - struct pinctrl_maps *maps_node;
> - int i;
> - struct pinctrl_map const *map;
> -
> - seq_puts(s, "Pinctrl maps:\n");
> -
> - mutex_lock(&pinctrl_maps_mutex);
> - for_each_maps(maps_node, i, map) {
> - seq_printf(s, "%s:\n", map->name);
> - seq_printf(s, " device: %s\n", map->dev_name);
> - seq_printf(s, " controlling device %s\n", map->ctrl_dev_name);
> - seq_printf(s, " function: %s\n", map->function);
> - seq_printf(s, " group: %s\n", map->group ? map->group :
> - "(default)");
> - }
> - mutex_unlock(&pinctrl_maps_mutex);
> -
> - return 0;
> -}
> -
> static int pinmux_hogs_show(struct seq_file *s, void *what)
> {
> struct pinctrl_dev *pctldev = s->private;
> @@ -947,6 +925,28 @@ static int pinctrl_devices_show(struct seq_file *s, void *what)
> return 0;
> }
>
> +static int pinctrl_maps_show(struct seq_file *s, void *what)
> +{
> + struct pinctrl_maps *maps_node;
> + int i;
> + struct pinctrl_map const *map;
> +
> + seq_puts(s, "Pinctrl maps:\n");
> +
> + mutex_lock(&pinctrl_maps_mutex);
> + for_each_maps(maps_node, i, map) {
> + seq_printf(s, "%s:\n", map->name);
> + seq_printf(s, " device: %s\n", map->dev_name);
> + seq_printf(s, " controlling device %s\n", map->ctrl_dev_name);
> + seq_printf(s, " function: %s\n", map->function);
> + seq_printf(s, " group: %s\n", map->group ? map->group :
> + "(default)");
> + }
> + mutex_unlock(&pinctrl_maps_mutex);
> +
> + return 0;
> +}
> +
> static int pinctrl_show(struct seq_file *s, void *what)
> {
> struct pinctrl *p;
> @@ -988,11 +988,6 @@ static int pinctrl_gpioranges_open(struct inode *inode, struct file *file)
> return single_open(file, pinctrl_gpioranges_show, inode->i_private);
> }
>
> -static int pinctrl_maps_open(struct inode *inode, struct file *file)
> -{
> - return single_open(file, pinctrl_maps_show, inode->i_private);
> -}
> -
> static int pinmux_hogs_open(struct inode *inode, struct file *file)
> {
> return single_open(file, pinmux_hogs_show, inode->i_private);
> @@ -1003,6 +998,11 @@ static int pinctrl_devices_open(struct inode *inode, struct file *file)
> return single_open(file, pinctrl_devices_show, NULL);
> }
>
> +static int pinctrl_maps_open(struct inode *inode, struct file *file)
> +{
> + return single_open(file, pinctrl_maps_show, NULL);
> +}
> +
> static int pinctrl_open(struct inode *inode, struct file *file)
> {
> return single_open(file, pinctrl_show, NULL);
> @@ -1029,22 +1029,22 @@ static const struct file_operations pinctrl_gpioranges_ops = {
> .release = single_release,
> };
>
> -static const struct file_operations pinctrl_maps_ops = {
> - .open = pinctrl_maps_open,
> +static const struct file_operations pinmux_hogs_ops = {
> + .open = pinmux_hogs_open,
> .read = seq_read,
> .llseek = seq_lseek,
> .release = single_release,
> };
>
> -static const struct file_operations pinmux_hogs_ops = {
> - .open = pinmux_hogs_open,
> +static const struct file_operations pinctrl_devices_ops = {
> + .open = pinctrl_devices_open,
> .read = seq_read,
> .llseek = seq_lseek,
> .release = single_release,
> };
>
> -static const struct file_operations pinctrl_devices_ops = {
> - .open = pinctrl_devices_open,
> +static const struct file_operations pinctrl_maps_ops = {
> + .open = pinctrl_maps_open,
> .read = seq_read,
> .llseek = seq_lseek,
> .release = single_release,
> @@ -1078,8 +1078,6 @@ static void pinctrl_init_device_debugfs(struct pinctrl_dev *pctldev)
> device_root, pctldev, &pinctrl_groups_ops);
> debugfs_create_file("gpio-ranges", S_IFREG | S_IRUGO,
> device_root, pctldev, &pinctrl_gpioranges_ops);
> - debugfs_create_file("pinctrl-maps", S_IFREG | S_IRUGO,
> - device_root, pctldev, &pinctrl_maps_ops);
> debugfs_create_file("pinmux-hogs", S_IFREG | S_IRUGO,
> device_root, pctldev, &pinmux_hogs_ops);
> pinmux_init_device_debugfs(device_root, pctldev);
> @@ -1102,6 +1100,8 @@ static void pinctrl_init_debugfs(void)
>
> debugfs_create_file("pinctrl-devices", S_IFREG | S_IRUGO,
> debugfs_root, NULL, &pinctrl_devices_ops);
> + debugfs_create_file("pinctrl-maps", S_IFREG | S_IRUGO,
> + debugfs_root, NULL, &pinctrl_maps_ops);
> debugfs_create_file("pinctrl-handles", S_IFREG | S_IRUGO,
> debugfs_root, NULL, &pinctrl_ops);
> }
> --
> 1.7.0.4
>
>
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