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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-18 10:23:40 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-18 10:23:40 -0800
commite9cf59aeeea49ae84ffcf0e28699b46d705e85f0 (patch)
tree7aae7ea622b3bc71953aeee9ca302660e95a4f51 /drivers/input
parent7c45512df987c5619db041b5c9b80d281e26d3db (diff)
parent9937c026820baabd1e908a9c1e6bdc846293000a (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input subsystem fixes from Dmitry Torokhov: "Two small driver fixups and a documentation update for managed input devices" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: wacom - fix wacom_set_report retry logic Input: document that unregistering managed devices is not necessary Input: lm8323 - fix checking PWM interrupt status
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/input.c16
-rw-r--r--drivers/input/keyboard/lm8323.c2
-rw-r--r--drivers/input/tablet/wacom_sys.c6
3 files changed, 18 insertions, 6 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c
index ce01332f7b3..c0446992892 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1785,12 +1785,13 @@ static void devm_input_device_release(struct device *dev, void *res)
* its driver (or binding fails). Once managed input device is allocated,
* it is ready to be set up and registered in the same fashion as regular
* input device. There are no special devm_input_device_[un]register()
- * variants, regular ones work with both managed and unmanaged devices.
+ * variants, regular ones work with both managed and unmanaged devices,
+ * should you need them. In most cases however, managed input device need
+ * not be explicitly unregistered or freed.
*
* NOTE: the owner device is set up as parent of input device and users
* should not override it.
*/
-
struct input_dev *devm_input_allocate_device(struct device *dev)
{
struct input_dev *input;
@@ -2004,6 +2005,17 @@ static void devm_input_device_unregister(struct device *dev, void *res)
* Once device has been successfully registered it can be unregistered
* with input_unregister_device(); input_free_device() should not be
* called in this case.
+ *
+ * Note that this function is also used to register managed input devices
+ * (ones allocated with devm_input_allocate_device()). Such managed input
+ * devices need not be explicitly unregistered or freed, their tear down
+ * is controlled by the devres infrastructure. It is also worth noting
+ * that tear down of managed input devices is internally a 2-step process:
+ * registered managed input device is first unregistered, but stays in
+ * memory and can still handle input_event() calls (although events will
+ * not be delivered anywhere). The freeing of managed input device will
+ * happen later, when devres stack is unwound to the point where device
+ * allocation was made.
*/
int input_register_device(struct input_dev *dev)
{
diff --git a/drivers/input/keyboard/lm8323.c b/drivers/input/keyboard/lm8323.c
index 93c81266213..0de23f41b2d 100644
--- a/drivers/input/keyboard/lm8323.c
+++ b/drivers/input/keyboard/lm8323.c
@@ -398,7 +398,7 @@ static irqreturn_t lm8323_irq(int irq, void *_lm)
lm8323_configure(lm);
}
for (i = 0; i < LM8323_NUM_PWMS; i++) {
- if (ints & (1 << (INT_PWM1 + i))) {
+ if (ints & (INT_PWM1 << i)) {
dev_vdbg(&lm->client->dev,
"pwm%d engine completed\n", i);
pwm_done(&lm->pwm[i]);
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index f92d34f45a1..aaf23aeae2e 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -553,10 +553,10 @@ static int wacom_set_device_mode(struct usb_interface *intf, int report_id, int
if (!rep_data)
return error;
- rep_data[0] = report_id;
- rep_data[1] = mode;
-
do {
+ rep_data[0] = report_id;
+ rep_data[1] = mode;
+
error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
report_id, rep_data, length, 1);
if (error >= 0)