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Date: Tue, 1 Aug 2006 23:01:11 -0400
From: Dmitry Torokhov <dtor@...ightbb.com>
To: linux-kernel@...r.kernel.org
Cc: rpurdie@...ys.net, lenz@...wisc.edu, rmk@....linux.org.uk,
Pavel Machek <pavel@....cz>
Subject: [PATCH] ucb1x00-ts: handle errors from input_register_device()
I have not tested this (no hardware)
--
Dmitry
Subject: ucb1x00-ts - handle errors from input_register_device()
ucb1x00-ts: handle errors from input_register_device()
Signed-off-by: Dmitry Torokhov <dtor@...l.ru>
---
drivers/mfd/ucb1x00-ts.c | 49 ++++++++++++++++++++++++++++-------------------
1 files changed, 30 insertions(+), 19 deletions(-)
Index: work/drivers/mfd/ucb1x00-ts.c
===================================================================
--- work.orig/drivers/mfd/ucb1x00-ts.c
+++ work/drivers/mfd/ucb1x00-ts.c
@@ -58,6 +58,7 @@ static int adcsync;
static inline void ucb1x00_ts_evt_add(struct ucb1x00_ts *ts, u16 pressure, u16 x, u16 y)
{
struct input_dev *idev = ts->idev;
+
input_report_abs(idev, ABS_X, x);
input_report_abs(idev, ABS_Y, y);
input_report_abs(idev, ABS_PRESSURE, pressure);
@@ -67,6 +68,7 @@ static inline void ucb1x00_ts_evt_add(st
static inline void ucb1x00_ts_event_release(struct ucb1x00_ts *ts)
{
struct input_dev *idev = ts->idev;
+
input_report_abs(idev, ABS_PRESSURE, 0);
input_sync(idev);
}
@@ -189,6 +191,7 @@ static inline unsigned int ucb1x00_ts_re
static inline int ucb1x00_ts_pen_down(struct ucb1x00_ts *ts)
{
unsigned int val = ucb1x00_reg_read(ts->ucb, UCB_TS_CR);
+
if (machine_is_collie())
return (!(val & (UCB_TS_CR_TSPX_LOW)));
else
@@ -291,6 +294,7 @@ static int ucb1x00_thread(void *_ts)
static void ucb1x00_ts_irq(int idx, void *id)
{
struct ucb1x00_ts *ts = id;
+
ucb1x00_disable_irq(ts->ucb, UCB_IRQ_TSPX, UCB_FALLING);
wake_up(&ts->irq_wait);
}
@@ -372,36 +376,43 @@ static int ucb1x00_ts_resume(struct ucb1
static int ucb1x00_ts_add(struct ucb1x00_dev *dev)
{
struct ucb1x00_ts *ts;
+ struct input_dev *idev;
+ int err;
ts = kzalloc(sizeof(struct ucb1x00_ts), GFP_KERNEL);
- if (!ts)
- return -ENOMEM;
-
- ts->idev = input_allocate_device();
- if (!ts->idev) {
- kfree(ts);
- return -ENOMEM;
+ idev = input_allocate_device();
+ if (!ts || !idev) {
+ err = -ENOMEM;
+ goto fail;
}
ts->ucb = dev->ucb;
+ ts->idev = idev;
ts->adcsync = adcsync ? UCB_SYNC : UCB_NOSYNC;
- ts->idev->private = ts;
- ts->idev->name = "Touchscreen panel";
- ts->idev->id.product = ts->ucb->id;
- ts->idev->open = ucb1x00_ts_open;
- ts->idev->close = ucb1x00_ts_close;
-
- __set_bit(EV_ABS, ts->idev->evbit);
- __set_bit(ABS_X, ts->idev->absbit);
- __set_bit(ABS_Y, ts->idev->absbit);
- __set_bit(ABS_PRESSURE, ts->idev->absbit);
-
- input_register_device(ts->idev);
+ idev->private = ts;
+ idev->name = "Touchscreen panel";
+ idev->id.product = ts->ucb->id;
+ idev->open = ucb1x00_ts_open;
+ idev->close = ucb1x00_ts_close;
+
+ __set_bit(EV_ABS, idev->evbit);
+ __set_bit(ABS_X, idev->absbit);
+ __set_bit(ABS_Y, idev->absbit);
+ __set_bit(ABS_PRESSURE, idev->absbit);
+
+ err = input_register_device(idev);
+ if (err)
+ goto fail;
dev->priv = ts;
return 0;
+
+ fail:
+ input_free_device(idev);
+ kfree(ts);
+ return err;
}
static void ucb1x00_ts_remove(struct ucb1x00_dev *dev)
-
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