Commit 0f622bf4 authored by Dmitry Torokhov's avatar Dmitry Torokhov

Input: ads7846 - do not allow altering platform data

Tested-by: default avatarAnatolij Gustschin <agust@denx.de>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent af6e1d99
......@@ -878,14 +878,15 @@ static int __devinit setup_pendown(struct spi_device *spi, struct ads7846 *ts)
static int __devinit ads7846_probe(struct spi_device *spi)
{
struct ads7846 *ts;
struct ads7846_packet *packet;
struct input_dev *input_dev;
struct ads7846_platform_data *pdata = spi->dev.platform_data;
struct spi_message *m;
struct spi_transfer *x;
int vref;
int err;
struct ads7846 *ts;
struct ads7846_packet *packet;
struct input_dev *input_dev;
const struct ads7846_platform_data *pdata = spi->dev.platform_data;
struct spi_message *m;
struct spi_transfer *x;
unsigned long irq_flags;
int vref;
int err;
if (!spi->irq) {
dev_dbg(&spi->dev, "no IRQ?\n");
......@@ -1174,20 +1175,22 @@ static int __devinit ads7846_probe(struct spi_device *spi)
goto err_put_regulator;
}
if (!pdata->irq_flags)
pdata->irq_flags = IRQF_TRIGGER_FALLING;
irq_flags = pdata->irq_flags ? : IRQF_TRIGGER_FALLING;
if (request_irq(spi->irq, ads7846_irq, pdata->irq_flags,
spi->dev.driver->name, ts)) {
err = request_irq(spi->irq, ads7846_irq, irq_flags,
spi->dev.driver->name, ts);
if (err && !pdata->irq_flags) {
dev_info(&spi->dev,
"trying pin change workaround on irq %d\n", spi->irq);
err = request_irq(spi->irq, ads7846_irq,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
spi->dev.driver->name, ts);
if (err) {
dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq);
goto err_disable_regulator;
}
}
if (err) {
dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq);
goto err_disable_regulator;
}
err = ads784x_hwmon_register(spi, ts);
......
......@@ -48,7 +48,7 @@ struct ads7846_platform_data {
* state if get_pendown_state == NULL
*/
int (*get_pendown_state)(void);
int (*filter_init) (struct ads7846_platform_data *pdata,
int (*filter_init) (const struct ads7846_platform_data *pdata,
void **filter_data);
int (*filter) (void *filter_data, int data_idx, int *val);
void (*filter_cleanup)(void *filter_data);
......
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