[PATCH 06/10] staging: gasket: sysfs: convert to standard logging

Todd Poynor
2018-07-27T03:08:12Z

Drop gasket logging calls in favor of standard logging.

Signed-off-by: Todd Poynor <toddpoynor@google.com>
---
drivers/staging/gasket/gasket_sysfs.c | 73 +++++++++++++--------------
1 file changed, 35 insertions(+), 38 deletions(-)

diff --git a/drivers/staging/gasket/gasket_sysfs.c b/drivers/staging/gasket/gasket_sysfs.c
index 1c5f7502e0d5e..418b81797e638 100644
--- a/drivers/staging/gasket/gasket_sysfs.c
+++ b/drivers/staging/gasket/gasket_sysfs.c
@@ -3,7 +3,9 @@
#include "gasket_sysfs.h"

#include "gasket_core.h"
-#include "gasket_logging.h"
+
+#include <linux/device.h>
+#include <linux/printk.h>

/*
* Pair of kernel device and user-specified pointer. Used in lookups in sysfs
@@ -66,7 +68,7 @@ static struct gasket_sysfs_mapping *get_mapping(struct device *device)
int i;

if (!device) {
- gasket_nodev_error("Received NULL device!");
+ pr_debug("%s: Received NULL device\n", __func__);
return NULL;
}

@@ -80,7 +82,8 @@ static struct gasket_sysfs_mapping *get_mapping(struct device *device)
mutex_unlock(&dev_mappings[i].mutex);
}

- gasket_nodev_info("Mapping to device %s not found.", device->kobj.name);
+ dev_dbg(device, "%s: Mapping to device %s not found\n",
+ __func__, device->kobj.name);
return NULL;
}

@@ -103,16 +106,15 @@ static void put_mapping(struct gasket_sysfs_mapping *mapping)
struct device *device;

if (!mapping) {
- gasket_nodev_info("Mapping should not be NULL.");
+ pr_debug("%s: Mapping should not be NULL\n", __func__);
return;
}

mutex_lock(&mapping->mutex);
if (refcount_read(&mapping->refcount.refcount) == 0)
- gasket_nodev_error("Refcount is already 0!");
+ dev_err(mapping->device, "Refcount is already 0\n");
if (kref_put(&mapping->refcount, release_entry)) {
- gasket_nodev_info("Removing Gasket sysfs mapping, device %s",
- mapping->device->kobj.name);
+ dev_dbg(mapping->device, "Removing Gasket sysfs mapping\n");
/*
* We can't remove the sysfs nodes in the kref callback, since
* device_remove_file() blocks until the node is free.
@@ -182,16 +184,13 @@ int gasket_sysfs_create_mapping(
static DEFINE_MUTEX(function_mutex);

mutex_lock(&function_mutex);
-
- gasket_nodev_info(
- "Creating sysfs entries for device pointer 0x%p.", device);
+ dev_dbg(device, "Creating sysfs entries for device\n");

/* Check that the device we're adding hasn't already been added. */
mapping = get_mapping(device);
if (mapping) {
- gasket_nodev_error(
- "Attempting to re-initialize sysfs mapping for device "
- "0x%p.", device);
+ dev_err(device,
+ "Attempting to re-initialize sysfs mapping for device\n");
put_mapping(mapping);
mutex_unlock(&function_mutex);
return -EBUSY;
@@ -207,13 +206,13 @@ int gasket_sysfs_create_mapping(
}

if (map_idx == GASKET_SYSFS_NUM_MAPPINGS) {
- gasket_nodev_error("All mappings have been exhausted!");
+ dev_err(device, "All mappings have been exhausted\n");
mutex_unlock(&function_mutex);
return -ENOMEM;
}

- gasket_nodev_info(
- "Creating sysfs mapping for device %s.", device->kobj.name);
+ dev_dbg(device, "Creating sysfs mapping for device %s\n",
+ device->kobj.name);

mapping = &dev_mappings[map_idx];
kref_init(&mapping->refcount);
@@ -224,7 +223,7 @@ int gasket_sysfs_create_mapping(
GFP_KERNEL);
mapping->attribute_count = 0;
if (!mapping->attributes) {
- gasket_nodev_error("Unable to allocate sysfs attribute array.");
+ dev_dbg(device, "Unable to allocate sysfs attribute array\n");
mapping->device = NULL;
mapping->gasket_dev = NULL;
mutex_unlock(&mapping->mutex);
@@ -247,10 +246,9 @@ int gasket_sysfs_create_entries(
struct gasket_sysfs_mapping *mapping = get_mapping(device);

if (!mapping) {
- gasket_nodev_error(
- "Creating entries for device 0x%p without first "
- "initializing mapping.",
- device);
+ dev_dbg(device,
+ "Creating entries for device without first "
+ "initializing mapping\n");
return -EINVAL;
}

@@ -258,9 +256,9 @@ int gasket_sysfs_create_entries(
for (i = 0; strcmp(attrs[i].attr.attr.name, GASKET_ARRAY_END_MARKER);
i++) {
if (mapping->attribute_count == GASKET_SYSFS_MAX_NODES) {
- gasket_nodev_error(
+ dev_err(device,
"Maximum number of sysfs nodes reached for "
- "device.");
+ "device\n");
mutex_unlock(&mapping->mutex);
put_mapping(mapping);
return -ENOMEM;
@@ -268,7 +266,7 @@ int gasket_sysfs_create_entries(

ret = device_create_file(device, &attrs[i].attr);
if (ret) {
- gasket_nodev_error("Unable to create device entries");
+ dev_dbg(device, "Unable to create device entries\n");
mutex_unlock(&mapping->mutex);
put_mapping(mapping);
return ret;
@@ -289,10 +287,9 @@ void gasket_sysfs_remove_mapping(struct device *device)
struct gasket_sysfs_mapping *mapping = get_mapping(device);

if (!mapping) {
- gasket_nodev_error(
+ dev_err(device,
"Attempted to remove non-existent sysfs mapping to "
- "device 0x%p",
- device);
+ "device\n");
return;
}

@@ -304,7 +301,7 @@ struct gasket_dev *gasket_sysfs_get_device_data(struct device *device)
struct gasket_sysfs_mapping *mapping = get_mapping(device);

if (!mapping) {
- gasket_nodev_error("device %p not registered.", device);
+ dev_err(device, "device not registered\n");
return NULL;
}

@@ -342,8 +339,8 @@ struct gasket_sysfs_attribute *gasket_sysfs_get_attr(
return &attrs[i];
}

- gasket_nodev_error("Unable to find match for device_attribute %s",
- attr->attr.name);
+ dev_err(device, "Unable to find match for device_attribute %s\n",
+ attr->attr.name);
return NULL;
}
EXPORT_SYMBOL(gasket_sysfs_get_attr);
@@ -368,8 +365,8 @@ void gasket_sysfs_put_attr(
}
}

- gasket_nodev_error(
- "Unable to put unknown attribute: %s", attr->attr.attr.name);
+ dev_err(device, "Unable to put unknown attribute: %s\n",
+ attr->attr.attr.name);
}
EXPORT_SYMBOL(gasket_sysfs_put_attr);

@@ -383,26 +380,26 @@ ssize_t gasket_sysfs_register_store(
struct gasket_sysfs_attribute *gasket_attr;

if (count < 3 || buf[0] != '0' || buf[1] != 'x') {
- gasket_nodev_error(
- "sysfs register write format: \"0x<hex value>\".");
+ dev_err(device,
+ "sysfs register write format: \"0x<hex value>\"\n");
return -EINVAL;
}

if (kstrtoul(buf, 16, &parsed_value) != 0) {
- gasket_nodev_error(
- "Unable to parse input as 64-bit hex value: %s.", buf);
+ dev_err(device,
+ "Unable to parse input as 64-bit hex value: %s\n", buf);
return -EINVAL;
}

mapping = get_mapping(device);
if (!mapping) {
- gasket_nodev_info("Device driver may have been removed.");
+ dev_err(device, "Device driver may have been removed\n");
return 0;
}

gasket_dev = mapping->gasket_dev;
if (!gasket_dev) {
- gasket_nodev_info("Device driver may have been removed.");
+ dev_err(device, "Device driver may have been removed\n");
return 0;
}

--
2.18.0.345.g5c9ce644c3-goog