Defined separate simple show functions for each attribute instead of
having a one big one containing a chain of conditionals.
Replaced calls to scnprintf with sprintf since all the outputs are
single integers.
All the readable device attributes are read-only, so used DEVICE_ATTR_RO
to define them.
The definitions are only used to populate the kp_attr_list attribute
array, so declared them as static.
Fixes the following sparse warnings:
drivers/staging/kpc2000/kpc2000/core.c:152:1: warning: symbol 'dev_attr_ssid' was not declared. Should it be static?
drivers/staging/kpc2000/kpc2000/core.c:153:1: warning: symbol 'dev_attr_ddna' was not declared. Should it be static?
drivers/staging/kpc2000/kpc2000/core.c:154:1: warning: symbol 'dev_attr_card_id' was not declared. Should it be static?
drivers/staging/kpc2000/kpc2000/core.c:155:1: warning: symbol 'dev_attr_hw_rev' was not declared. Should it be static?
drivers/staging/kpc2000/kpc2000/core.c:156:1: warning: symbol 'dev_attr_build' was not declared. Should it be static?
drivers/staging/kpc2000/kpc2000/core.c:157:1: warning: symbol 'dev_attr_build_date' was not declared. Should it be static?
drivers/staging/kpc2000/kpc2000/core.c:158:1: warning: symbol 'dev_attr_build_time' was not declared. Should it be static?
drivers/staging/kpc2000/kpc2000/core.c:159:1: warning: symbol 'dev_attr_cpld_reg' was not declared. Should it be static?
drivers/staging/kpc2000/kpc2000/core.c:161:1: warning: symbol 'dev_attr_cpld_reconfigure' was not declared. Should it be static?
Signed-off-by: Jeremy Sowden <jeremy@xxxxxxxxxx>
---
drivers/staging/kpc2000/kpc2000/core.c | 106 +++++++++++++++++--------
1 file changed, 73 insertions(+), 33 deletions(-)
diff --git a/drivers/staging/kpc2000/kpc2000/core.c b/drivers/staging/kpc2000/kpc2000/core.c
index e58bddec87ee..6b56ddcc03fa 100644
--- a/drivers/staging/kpc2000/kpc2000/core.c
+++ b/drivers/staging/kpc2000/kpc2000/core.c
@@ -39,7 +39,7 @@ static struct kp2000_device *get_pcard(struct device *dev)
return pci_get_drvdata(pdev);
}
-static ssize_t show_attr(struct device *dev, struct device_attribute *attr,
+static ssize_t ssid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct kp2000_device *pcard = get_pcard(dev);
@@ -47,36 +47,84 @@ static ssize_t show_attr(struct device *dev, struct device_attribute *attr,
if (!pcard)
return -ENXIO;
- if (strcmp("ssid", attr->attr.name) == 0)
- return scnprintf(buf, PAGE_SIZE, "%016llx\n", pcard->ssid);
+ return sprintf(buf, "%016llx\n", pcard->ssid);
+}
+static DEVICE_ATTR_RO(ssid);
- if (strcmp("ddna", attr->attr.name) == 0)
- return scnprintf(buf, PAGE_SIZE, "%016llx\n", pcard->ddna);
+static ssize_t ddna_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct kp2000_device *pcard = get_pcard(dev);
- if (strcmp("card_id", attr->attr.name) == 0)
- return scnprintf(buf, PAGE_SIZE, "%08x\n", pcard->card_id);
+ if (!pcard)
+ return -ENXIO;
+
+ return sprintf(buf, "%016llx\n", pcard->ddna);
+}
+static DEVICE_ATTR_RO(ddna);
+
+static ssize_t card_id_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct kp2000_device *pcard = get_pcard(dev);
- if (strcmp("hw_rev", attr->attr.name) == 0)
- return scnprintf(buf, PAGE_SIZE, "%08x\n",
- pcard->hardware_revision);
+ if (!pcard)
+ return -ENXIO;
- if (strcmp("build", attr->attr.name) == 0)
- return scnprintf(buf, PAGE_SIZE, "%08x\n",
- pcard->build_version);
+ return sprintf(buf, "%08x\n", pcard->card_id);
+}
+static DEVICE_ATTR_RO(card_id);
- if (strcmp("build_date", attr->attr.name) == 0)
- return scnprintf(buf, PAGE_SIZE, "%08x\n",
- pcard->build_datestamp);
+static ssize_t hw_rev_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct kp2000_device *pcard = get_pcard(dev);
- if (strcmp("build_time", attr->attr.name) == 0)
- return scnprintf(buf, PAGE_SIZE, "%08x\n",
- pcard->build_timestamp);
+ if (!pcard)
+ return -ENXIO;
- return -ENXIO;
+ return sprintf(buf, "%08x\n", pcard->hardware_revision);
}
+static DEVICE_ATTR_RO(hw_rev);
-static ssize_t show_cpld_config_reg(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t build_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct kp2000_device *pcard = get_pcard(dev);
+
+ if (!pcard)
+ return -ENXIO;
+
+ return sprintf(buf, "%08x\n", pcard->build_version);
+}
+static DEVICE_ATTR_RO(build);
+
+static ssize_t build_date_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct kp2000_device *pcard = get_pcard(dev);
+
+ if (!pcard)
+ return -ENXIO;
+
+ return sprintf(buf, "%08x\n", pcard->build_datestamp);
+}
+static DEVICE_ATTR_RO(build_date);
+
+static ssize_t build_time_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct kp2000_device *pcard = get_pcard(dev);
+
+ if (!pcard)
+ return -ENXIO;
+
+ return sprintf(buf, "%08x\n", pcard->build_timestamp);
+}
+static DEVICE_ATTR_RO(build_time);
+
+static ssize_t cpld_reg_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
struct kp2000_device *pcard = get_pcard(dev);
u64 val;
@@ -85,8 +133,9 @@ static ssize_t show_cpld_config_reg(struct device *dev,
return -ENXIO;
val = readq(pcard->sysinfo_regs_base + REG_CPLD_CONFIG);
- return scnprintf(buf, PAGE_SIZE, "%016llx\n", val);
+ return sprintf(buf, "%016llx\n", val);
}
+static DEVICE_ATTR_RO(cpld_reg);
static ssize_t cpld_reconfigure(struct device *dev,
struct device_attribute *attr,
@@ -110,16 +159,7 @@ static ssize_t cpld_reconfigure(struct device *dev,
writeq(wr_val, pcard->sysinfo_regs_base + REG_CPLD_CONFIG);
return count;
}
-
-DEVICE_ATTR(ssid, 0444, show_attr, NULL);
-DEVICE_ATTR(ddna, 0444, show_attr, NULL);
-DEVICE_ATTR(card_id, 0444, show_attr, NULL);
-DEVICE_ATTR(hw_rev, 0444, show_attr, NULL);
-DEVICE_ATTR(build, 0444, show_attr, NULL);
-DEVICE_ATTR(build_date, 0444, show_attr, NULL);
-DEVICE_ATTR(build_time, 0444, show_attr, NULL);
-DEVICE_ATTR(cpld_reg, 0444, show_cpld_config_reg, NULL);
-DEVICE_ATTR(cpld_reconfigure, 0220, NULL, cpld_reconfigure);
+static DEVICE_ATTR(cpld_reconfigure, 0220, NULL, cpld_reconfigure);
static const struct attribute *kp_attr_list[] = {
&dev_attr_ssid.attr,
--
2.20.1
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