[PATCH v3] mtd: remove DEBUGFS_RO

Discussion:

[PATCH v3] mtd: remove DEBUGFS_RO_ATTR()

Yangtao Li

2018-12-02 07:32:02 UTC

We already have the DEFINE_SHOW_ATTRIBUTE.There is no need to define
such a macro,so remove DEBUGFS_RO_ATTR.Also use DEFINE_SHOW_ATTRIBUTE
to simplify some code.

Signed-off-by: Yangtao Li <***@gmail.com>
---
changes in v3:
-remove the blank line between the function
definition and DEFINE_SHOW_ATTRIBUTE()
---
drivers/mtd/devices/docg3.c | 16 ++++++++--------
drivers/mtd/devices/docg3.h | 11 -----------
drivers/mtd/mtdswap.c | 13 +------------
drivers/mtd/nand/raw/nandsim.c | 17 +++--------------
4 files changed, 12 insertions(+), 45 deletions(-)

diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index 512bd4c2eec0..4c94fc096696 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -1603,7 +1603,7 @@ static void doc_unregister_sysfs(struct platform_device *pdev,
/*
* Debug sysfs entries
*/
-static int dbg_flashctrl_show(struct seq_file *s, void *p)
+static int flashcontrol_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;

@@ -1623,9 +1623,9 @@ static int dbg_flashctrl_show(struct seq_file *s, void *p)

return 0;
}
-DEBUGFS_RO_ATTR(flashcontrol, dbg_flashctrl_show);
+DEFINE_SHOW_ATTRIBUTE(flashcontrol);

-static int dbg_asicmode_show(struct seq_file *s, void *p)
+static int asic_mode_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;

@@ -1660,9 +1660,9 @@ static int dbg_asicmode_show(struct seq_file *s, void *p)
seq_puts(s, ")\n");
return 0;
}
-DEBUGFS_RO_ATTR(asic_mode, dbg_asicmode_show);
+DEFINE_SHOW_ATTRIBUTE(asic_mode);

-static int dbg_device_id_show(struct seq_file *s, void *p)
+static int device_id_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;
int id;
@@ -1674,9 +1674,9 @@ static int dbg_device_id_show(struct seq_file *s, void *p)
seq_printf(s, "DeviceId = %d\n", id);
return 0;
}
-DEBUGFS_RO_ATTR(device_id, dbg_device_id_show);
+DEFINE_SHOW_ATTRIBUTE(device_id);

-static int dbg_protection_show(struct seq_file *s, void *p)
+static int protection_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;
int protect, dps0, dps0_low, dps0_high, dps1, dps1_low, dps1_high;
@@ -1726,7 +1726,7 @@ static int dbg_protection_show(struct seq_file *s, void *p)
!!(dps1 & DOC_DPS_KEY_OK));
return 0;
}
-DEBUGFS_RO_ATTR(protection, dbg_protection_show);
+DEFINE_SHOW_ATTRIBUTE(protection);

static void __init doc_dbg_register(struct mtd_info *floor)
{
diff --git a/drivers/mtd/devices/docg3.h b/drivers/mtd/devices/docg3.h
index e99946575398..e16dca23655b 100644
--- a/drivers/mtd/devices/docg3.h
+++ b/drivers/mtd/devices/docg3.h
@@ -317,17 +317,6 @@ struct docg3 {
#define doc_info(fmt, arg...) dev_info(docg3->dev, (fmt), ## arg)
#define doc_dbg(fmt, arg...) dev_dbg(docg3->dev, (fmt), ## arg)
#define doc_vdbg(fmt, arg...) dev_vdbg(docg3->dev, (fmt), ## arg)
-
-#define DEBUGFS_RO_ATTR(name, show_fct) \
- static int name##_open(struct inode *inode, struct file *file) \
- { return single_open(file, show_fct, inode->i_private); } \
- static const struct file_operations name##_fops = { \
- .owner = THIS_MODULE, \
- .open = name##_open, \
- .llseek = seq_lseek, \
- .read = seq_read, \
- .release = single_release \
- };
#endif

/*
diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index d9dcb2d051b4..d162d1717fad 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -1265,18 +1265,7 @@ static int mtdswap_show(struct seq_file *s, void *data)

return 0;
}
-
-static int mtdswap_open(struct inode *inode, struct file *file)
-{
- return single_open(file, mtdswap_show, inode->i_private);
-}
-
-static const struct file_operations mtdswap_fops = {
- .open = mtdswap_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(mtdswap);

static int mtdswap_add_debugfs(struct mtdswap_dev *d)
{
diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index c452819f6123..ef8721418f2d 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -443,7 +443,7 @@ static unsigned long total_wear = 0;
/* MTD structure for NAND controller */
static struct mtd_info *nsmtd;

-static int nandsim_debugfs_show(struct seq_file *m, void *private)
+static int nandsim_show(struct seq_file *m, void *private)
{
unsigned long wmin = -1, wmax = 0, avg;
unsigned long deciles[10], decile_max[10], tot = 0;
@@ -494,18 +494,7 @@ static int nandsim_debugfs_show(struct seq_file *m, void *private)

return 0;
}
-
-static int nandsim_debugfs_open(struct inode *inode, struct file *file)
-{
- return single_open(file, nandsim_debugfs_show, inode->i_private);
-}
-
-static const struct file_operations dfs_fops = {
- .open = nandsim_debugfs_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(nandsim);

/**
* nandsim_debugfs_create - initialize debugfs
@@ -531,7 +520,7 @@ static int nandsim_debugfs_create(struct nandsim *dev)
}

dent = debugfs_create_file("nandsim_wear_report", S_IRUSR,
- root, dev, &dfs_fops);
+ root, dev, &nandsim_fops);
if (IS_ERR_OR_NULL(dent)) {
NS_ERR("cannot create \"nandsim_wear_report\" debugfs entry\n");
return -1;

--
2.17.0

Boris Brezillon

2018-12-02 08:15:43 UTC

Permalink

Looks like getting rid of DEBUGFS_RO_ATTR() is just one of the change
you do. I think you should change the subject line:

"mtd: use DEFINE_SHOW_ATTRIBUTE() instead of open-coding it"

This way it covers all of your changes.

On Sun, 2 Dec 2018 02:32:02 -0500

Post by Yangtao Li
We already have the DEFINE_SHOW_ATTRIBUTE.There is no need to define

^ missing space

Post by Yangtao Li
such a macro,so remove DEBUGFS_RO_ATTR.Also use DEFINE_SHOW_ATTRIBUTE

^ here as well

Post by Yangtao Li
to simplify some code.

If you go for the new subject line, you'll have to change this commit
message.

Post by Yangtao Li
---
-remove the blank line between the function
definition and DEFINE_SHOW_ATTRIBUTE()
---
drivers/mtd/devices/docg3.c | 16 ++++++++--------
drivers/mtd/devices/docg3.h | 11 -----------
drivers/mtd/mtdswap.c | 13 +------------
drivers/mtd/nand/raw/nandsim.c | 17 +++--------------
4 files changed, 12 insertions(+), 45 deletions(-)
diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index 512bd4c2eec0..4c94fc096696 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -1603,7 +1603,7 @@ static void doc_unregister_sysfs(struct platform_device *pdev,
/*
* Debug sysfs entries
*/
-static int dbg_flashctrl_show(struct seq_file *s, void *p)
+static int flashcontrol_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;
@@ -1623,9 +1623,9 @@ static int dbg_flashctrl_show(struct seq_file *s, void *p)
return 0;
}
-DEBUGFS_RO_ATTR(flashcontrol, dbg_flashctrl_show);
+DEFINE_SHOW_ATTRIBUTE(flashcontrol);
-static int dbg_asicmode_show(struct seq_file *s, void *p)
+static int asic_mode_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;
@@ -1660,9 +1660,9 @@ static int dbg_asicmode_show(struct seq_file *s, void *p)
seq_puts(s, ")\n");
return 0;
}
-DEBUGFS_RO_ATTR(asic_mode, dbg_asicmode_show);
+DEFINE_SHOW_ATTRIBUTE(asic_mode);
-static int dbg_device_id_show(struct seq_file *s, void *p)
+static int device_id_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;
int id;
@@ -1674,9 +1674,9 @@ static int dbg_device_id_show(struct seq_file *s, void *p)
seq_printf(s, "DeviceId = %d\n", id);
return 0;
}
-DEBUGFS_RO_ATTR(device_id, dbg_device_id_show);
+DEFINE_SHOW_ATTRIBUTE(device_id);
-static int dbg_protection_show(struct seq_file *s, void *p)
+static int protection_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;
int protect, dps0, dps0_low, dps0_high, dps1, dps1_low, dps1_high;
@@ -1726,7 +1726,7 @@ static int dbg_protection_show(struct seq_file *s, void *p)
!!(dps1 & DOC_DPS_KEY_OK));
return 0;
}
-DEBUGFS_RO_ATTR(protection, dbg_protection_show);
+DEFINE_SHOW_ATTRIBUTE(protection);
static void __init doc_dbg_register(struct mtd_info *floor)
{
diff --git a/drivers/mtd/devices/docg3.h b/drivers/mtd/devices/docg3.h
index e99946575398..e16dca23655b 100644
--- a/drivers/mtd/devices/docg3.h
+++ b/drivers/mtd/devices/docg3.h
@@ -317,17 +317,6 @@ struct docg3 {
#define doc_info(fmt, arg...) dev_info(docg3->dev, (fmt), ## arg)
#define doc_dbg(fmt, arg...) dev_dbg(docg3->dev, (fmt), ## arg)
#define doc_vdbg(fmt, arg...) dev_vdbg(docg3->dev, (fmt), ## arg)
-
-#define DEBUGFS_RO_ATTR(name, show_fct) \
- static int name##_open(struct inode *inode, struct file *file) \
- { return single_open(file, show_fct, inode->i_private); } \
- static const struct file_operations name##_fops = { \
- .owner = THIS_MODULE, \
- .open = name##_open, \
- .llseek = seq_lseek, \
- .read = seq_read, \
- .release = single_release \
- };
#endif
/*
diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index d9dcb2d051b4..d162d1717fad 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -1265,18 +1265,7 @@ static int mtdswap_show(struct seq_file *s, void *data)
return 0;
}
-
-static int mtdswap_open(struct inode *inode, struct file *file)
-{
- return single_open(file, mtdswap_show, inode->i_private);
-}
-
-static const struct file_operations mtdswap_fops = {
- .open = mtdswap_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(mtdswap);
static int mtdswap_add_debugfs(struct mtdswap_dev *d)
{
diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index c452819f6123..ef8721418f2d 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -443,7 +443,7 @@ static unsigned long total_wear = 0;
/* MTD structure for NAND controller */
static struct mtd_info *nsmtd;
-static int nandsim_debugfs_show(struct seq_file *m, void *private)
+static int nandsim_show(struct seq_file *m, void *private)
{
unsigned long wmin = -1, wmax = 0, avg;
unsigned long deciles[10], decile_max[10], tot = 0;
@@ -494,18 +494,7 @@ static int nandsim_debugfs_show(struct seq_file *m, void *private)
return 0;
}
-
-static int nandsim_debugfs_open(struct inode *inode, struct file *file)
-{
- return single_open(file, nandsim_debugfs_show, inode->i_private);
-}
-
-static const struct file_operations dfs_fops = {
- .open = nandsim_debugfs_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(nandsim);
/**
* nandsim_debugfs_create - initialize debugfs
@@ -531,7 +520,7 @@ static int nandsim_debugfs_create(struct nandsim *dev)
}
dent = debugfs_create_file("nandsim_wear_report", S_IRUSR,
- root, dev, &dfs_fops);
+ root, dev, &nandsim_fops);
if (IS_ERR_OR_NULL(dent)) {
NS_ERR("cannot create \"nandsim_wear_report\" debugfs entry\n");
return -1;

Frank Lee

2018-12-02 08:35:20 UTC