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authorMichał Mirosław <mirq-linux@rere.qmqm.pl>2013-02-01 20:40:17 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-02-06 12:18:56 -0800
commit9f3b795a626ee79574595e06d1437fe0c7d51d29 (patch)
tree1952cb2ac880c0e66f291916815c2a36b4ceb300 /drivers/uwb/lc-rc.c
parent807be03cae191cb88e2f267adcd49aba785c658b (diff)
driver-core: constify data for class_find_device()
All in-kernel users of class_find_device() don't really need mutable data for match callback. In two places (kernel/power/suspend_test.c, drivers/scsi/osd/osd_uld.c) this patch changes match callbacks to use const search data. The const is propagated to rtc_class_open() and power_supply_get_by_name() parameters. Note that there's a dev reference leak in suspend_test.c that's not touched in this patch. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/uwb/lc-rc.c')
-rw-r--r--drivers/uwb/lc-rc.c21
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/uwb/lc-rc.c b/drivers/uwb/lc-rc.c
index 4d688c75080..3eca6ceb984 100644
--- a/drivers/uwb/lc-rc.c
+++ b/drivers/uwb/lc-rc.c
@@ -40,9 +40,9 @@
#include "uwb-internal.h"
-static int uwb_rc_index_match(struct device *dev, void *data)
+static int uwb_rc_index_match(struct device *dev, const void *data)
{
- int *index = data;
+ const int *index = data;
struct uwb_rc *rc = dev_get_drvdata(dev);
if (rc->index == *index)
@@ -334,9 +334,9 @@ void uwb_rc_rm(struct uwb_rc *rc)
}
EXPORT_SYMBOL_GPL(uwb_rc_rm);
-static int find_rc_try_get(struct device *dev, void *data)
+static int find_rc_try_get(struct device *dev, const void *data)
{
- struct uwb_rc *target_rc = data;
+ const struct uwb_rc *target_rc = data;
struct uwb_rc *rc = dev_get_drvdata(dev);
if (rc == NULL) {
@@ -386,9 +386,9 @@ static inline struct uwb_rc *uwb_rc_get(struct uwb_rc *rc)
return rc;
}
-static int find_rc_grandpa(struct device *dev, void *data)
+static int find_rc_grandpa(struct device *dev, const void *data)
{
- struct device *grandpa_dev = data;
+ const struct device *grandpa_dev = data;
struct uwb_rc *rc = dev_get_drvdata(dev);
if (rc->uwb_dev.dev.parent->parent == grandpa_dev) {
@@ -419,7 +419,7 @@ struct uwb_rc *uwb_rc_get_by_grandpa(const struct device *grandpa_dev)
struct device *dev;
struct uwb_rc *rc = NULL;
- dev = class_find_device(&uwb_rc_class, NULL, (void *)grandpa_dev,
+ dev = class_find_device(&uwb_rc_class, NULL, grandpa_dev,
find_rc_grandpa);
if (dev)
rc = dev_get_drvdata(dev);
@@ -432,9 +432,9 @@ EXPORT_SYMBOL_GPL(uwb_rc_get_by_grandpa);
*
* @returns the pointer to the radio controller, properly referenced
*/
-static int find_rc_dev(struct device *dev, void *data)
+static int find_rc_dev(struct device *dev, const void *data)
{
- struct uwb_dev_addr *addr = data;
+ const struct uwb_dev_addr *addr = data;
struct uwb_rc *rc = dev_get_drvdata(dev);
if (rc == NULL) {
@@ -453,8 +453,7 @@ struct uwb_rc *uwb_rc_get_by_dev(const struct uwb_dev_addr *addr)
struct device *dev;
struct uwb_rc *rc = NULL;
- dev = class_find_device(&uwb_rc_class, NULL, (void *)addr,
- find_rc_dev);
+ dev = class_find_device(&uwb_rc_class, NULL, addr, find_rc_dev);
if (dev)
rc = dev_get_drvdata(dev);