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Input: rotary-encoder - constify platform data pointers 

Drivers should not be changing platform data attached to the device
because they do not own it.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2012-07-31 22:08:49 -07:00
parent 429a34d747
commit ce91953782
1 changed files with 6 additions and 6 deletions
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12
drivers/input/misc/rotary_encoder.c
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@ -29,7 +29,7 @@
struct rotary_encoder { struct rotary_encoder {
struct input_dev *input; struct input_dev *input;
struct rotary_encoder_platform_data *pdata; const struct rotary_encoder_platform_data *pdata;
unsigned int axis; unsigned int axis;
unsigned int pos; unsigned int pos;
@ -43,7 +43,7 @@ struct rotary_encoder {
char last_stable; char last_stable;
}; };
static int rotary_encoder_get_state(struct rotary_encoder_platform_data *pdata) static int rotary_encoder_get_state(const struct rotary_encoder_platform_data *pdata)
{ {
int a = !!gpio_get_value(pdata->gpio_a); int a = !!gpio_get_value(pdata->gpio_a);
int b = !!gpio_get_value(pdata->gpio_b); int b = !!gpio_get_value(pdata->gpio_b);
@ -56,7 +56,7 @@ static int rotary_encoder_get_state(struct rotary_encoder_platform_data *pdata)
static void rotary_encoder_report_event(struct rotary_encoder *encoder) static void rotary_encoder_report_event(struct rotary_encoder *encoder)
{ {
struct rotary_encoder_platform_data *pdata = encoder->pdata; const struct rotary_encoder_platform_data *pdata = encoder->pdata;
if (pdata->relative_axis) { if (pdata->relative_axis) {
input_report_rel(encoder->input, input_report_rel(encoder->input,
@ -142,10 +142,10 @@ static irqreturn_t rotary_encoder_half_period_irq(int irq, void *dev_id)
static int __devinit rotary_encoder_probe(struct platform_device *pdev) static int __devinit rotary_encoder_probe(struct platform_device *pdev)
{ {
struct rotary_encoder_platform_data *pdata = pdev->dev.platform_data; struct device *dev = &pdev->dev;
const struct rotary_encoder_platform_data *pdata = dev_get_platdata(dev);
struct rotary_encoder *encoder; struct rotary_encoder *encoder;
struct input_dev *input; struct input_dev *input;
struct device *dev = &pdev->dev;
irq_handler_t handler; irq_handler_t handler;
int err; int err;
@ -247,7 +247,7 @@ exit_free_mem:
static int __devexit rotary_encoder_remove(struct platform_device *pdev) static int __devexit rotary_encoder_remove(struct platform_device *pdev)
{ {
struct rotary_encoder *encoder = platform_get_drvdata(pdev); struct rotary_encoder *encoder = platform_get_drvdata(pdev);
struct rotary_encoder_platform_data *pdata = pdev->dev.platform_data; const struct rotary_encoder_platform_data *pdata = encoder->pdata;
free_irq(encoder->irq_a, encoder); free_irq(encoder->irq_a, encoder);
free_irq(encoder->irq_b, encoder); free_irq(encoder->irq_b, encoder);