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path: root/drivers/base/core.c
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Diffstat (limited to 'drivers/base/core.c')
-rw-r--r--drivers/base/core.c105
1 files changed, 68 insertions, 37 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 5e6e00bc1652..abea76c36a4b 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -184,6 +184,17 @@ static void device_release(struct kobject *kobj)
struct device *dev = kobj_to_dev(kobj);
struct device_private *p = dev->p;
+ /*
+ * Some platform devices are driven without driver attached
+ * and managed resources may have been acquired. Make sure
+ * all resources are released.
+ *
+ * Drivers still can add resources into device after device
+ * is deleted but alive, so release devres here to avoid
+ * possible memory leak.
+ */
+ devres_release_all(dev);
+
if (dev->release)
dev->release(dev);
else if (dev->type && dev->type->release)
@@ -1196,13 +1207,6 @@ void device_del(struct device *dev)
bus_remove_device(dev);
driver_deferred_probe_del(dev);
- /*
- * Some platform devices are driven without driver attached
- * and managed resources may have been acquired. Make sure
- * all resources are released.
- */
- devres_release_all(dev);
-
/* Notify the platform of the removal, in case they
* need to do anything...
*/
@@ -1861,26 +1865,20 @@ void device_shutdown(void)
*/
#ifdef CONFIG_PRINTK
-int __dev_printk(const char *level, const struct device *dev,
- struct va_format *vaf)
+static int
+create_syslog_header(const struct device *dev, char *hdr, size_t hdrlen)
{
- char dict[128];
- const char *level_extra = "";
- size_t dictlen = 0;
const char *subsys;
-
- if (!dev)
- return printk("%s(NULL device *): %pV", level, vaf);
+ size_t pos = 0;
if (dev->class)
subsys = dev->class->name;
else if (dev->bus)
subsys = dev->bus->name;
else
- goto skip;
+ return 0;
- dictlen += snprintf(dict + dictlen, sizeof(dict) - dictlen,
- "SUBSYSTEM=%s", subsys);
+ pos += snprintf(hdr + pos, hdrlen - pos, "SUBSYSTEM=%s", subsys);
/*
* Add device identifier DEVICE=:
@@ -1896,32 +1894,63 @@ int __dev_printk(const char *level, const struct device *dev,
c = 'b';
else
c = 'c';
- dictlen++;
- dictlen += snprintf(dict + dictlen, sizeof(dict) - dictlen,
- "DEVICE=%c%u:%u",
- c, MAJOR(dev->devt), MINOR(dev->devt));
+ pos++;
+ pos += snprintf(hdr + pos, hdrlen - pos,
+ "DEVICE=%c%u:%u",
+ c, MAJOR(dev->devt), MINOR(dev->devt));
} else if (strcmp(subsys, "net") == 0) {
struct net_device *net = to_net_dev(dev);
- dictlen++;
- dictlen += snprintf(dict + dictlen, sizeof(dict) - dictlen,
- "DEVICE=n%u", net->ifindex);
+ pos++;
+ pos += snprintf(hdr + pos, hdrlen - pos,
+ "DEVICE=n%u", net->ifindex);
} else {
- dictlen++;
- dictlen += snprintf(dict + dictlen, sizeof(dict) - dictlen,
- "DEVICE=+%s:%s", subsys, dev_name(dev));
+ pos++;
+ pos += snprintf(hdr + pos, hdrlen - pos,
+ "DEVICE=+%s:%s", subsys, dev_name(dev));
}
-skip:
- if (level[2])
- level_extra = &level[2]; /* skip past KERN_SOH "L" */
- return printk_emit(0, level[1] - '0',
- dictlen ? dict : NULL, dictlen,
- "%s %s: %s%pV",
- dev_driver_string(dev), dev_name(dev),
- level_extra, vaf);
+ return pos;
+}
+EXPORT_SYMBOL(create_syslog_header);
+
+int dev_vprintk_emit(int level, const struct device *dev,
+ const char *fmt, va_list args)
+{
+ char hdr[128];
+ size_t hdrlen;
+
+ hdrlen = create_syslog_header(dev, hdr, sizeof(hdr));
+
+ return vprintk_emit(0, level, hdrlen ? hdr : NULL, hdrlen, fmt, args);
+}
+EXPORT_SYMBOL(dev_vprintk_emit);
+
+int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...)
+{
+ va_list args;
+ int r;
+
+ va_start(args, fmt);
+
+ r = dev_vprintk_emit(level, dev, fmt, args);
+
+ va_end(args);
+
+ return r;
+}
+EXPORT_SYMBOL(dev_printk_emit);
+
+static int __dev_printk(const char *level, const struct device *dev,
+ struct va_format *vaf)
+{
+ if (!dev)
+ return printk("%s(NULL device *): %pV", level, vaf);
+
+ return dev_printk_emit(level[1] - '0', dev,
+ "%s %s: %pV",
+ dev_driver_string(dev), dev_name(dev), vaf);
}
-EXPORT_SYMBOL(__dev_printk);
int dev_printk(const char *level, const struct device *dev,
const char *fmt, ...)
@@ -1936,6 +1965,7 @@ int dev_printk(const char *level, const struct device *dev,
vaf.va = &args;
r = __dev_printk(level, dev, &vaf);
+
va_end(args);
return r;
@@ -1955,6 +1985,7 @@ int func(const struct device *dev, const char *fmt, ...) \
vaf.va = &args; \
\
r = __dev_printk(kern_level, dev, &vaf); \
+ \
va_end(args); \
\
return r; \