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Input: imx6ul_tsc - convert int to u32 

The code uses of_property_read_u32 and expects positive values.  However,
the values are stored in signed int variables.  Additionally, the registers
values are also stored in signed variables without a good reason
(readl/writel expect u32).

The only time this caused a real bug was in the new average-samples
property, in which the property is numerically compared and implicitly
expected to be positive.

I believe it's better to change all the properties and registers to u32,
for consistency and warnings reduction.

Signed-off-by: Guy Shapiro <guy.shapiro@mobi-wize.com>
Reported-by: Bjørn Forsman <bjorn.forsman@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Guy Shapiro 2016-11-30 10:25:11 -08:00 committed by Dmitry Torokhov
parent 70f5a294ad
commit accbcea346
1 changed files with 21 additions and 21 deletions
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42
drivers/input/touchscreen/imx6ul_tsc.c
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@ -91,9 +91,9 @@ struct imx6ul_tsc {
struct clk *adc_clk;
struct gpio_desc *xnur_gpio;
int measure_delay_time;
int pre_charge_time;
int average_samples;
u32 measure_delay_time;
u32 pre_charge_time;
u32 average_samples;
struct completion completion;
};
@ -104,11 +104,11 @@ struct imx6ul_tsc {
*/
static int imx6ul_adc_init(struct imx6ul_tsc *tsc)
{
int adc_hc = 0;
int adc_gc;
int adc_gs;
int adc_cfg;
int timeout;
u32 adc_hc = 0;
u32 adc_gc;
u32 adc_gs;
u32 adc_cfg;
unsigned long timeout;
reinit_completion(&tsc->completion);
@ -164,7 +164,7 @@ static int imx6ul_adc_init(struct imx6ul_tsc *tsc)
*/
static void imx6ul_tsc_channel_config(struct imx6ul_tsc *tsc)
{
int adc_hc0, adc_hc1, adc_hc2, adc_hc3, adc_hc4;
u32 adc_hc0, adc_hc1, adc_hc2, adc_hc3, adc_hc4;
adc_hc0 = DISABLE_CONVERSION_INT;
writel(adc_hc0, tsc->adc_regs + REG_ADC_HC0);
@ -189,8 +189,8 @@ static void imx6ul_tsc_channel_config(struct imx6ul_tsc *tsc)
*/
static void imx6ul_tsc_set(struct imx6ul_tsc *tsc)
{
int basic_setting = 0;
int start;
u32 basic_setting = 0;
u32 start;
basic_setting |= tsc->measure_delay_time << 8;
basic_setting |= DETECT_4_WIRE_MODE | AUTO_MEASURE;
@ -225,8 +225,8 @@ static int imx6ul_tsc_init(struct imx6ul_tsc *tsc)
static void imx6ul_tsc_disable(struct imx6ul_tsc *tsc)
{
int tsc_flow;
int adc_cfg;
u32 tsc_flow;
u32 adc_cfg;
/* TSC controller enters to idle status */
tsc_flow = readl(tsc->tsc_regs + REG_TSC_FLOW_CONTROL);
@ -243,8 +243,8 @@ static void imx6ul_tsc_disable(struct imx6ul_tsc *tsc)
static bool tsc_wait_detect_mode(struct imx6ul_tsc *tsc)
{
unsigned long timeout = jiffies + msecs_to_jiffies(2);
int state_machine;
int debug_mode2;
u32 state_machine;
u32 debug_mode2;
do {
if (time_after(jiffies, timeout))
@ -262,10 +262,10 @@ static bool tsc_wait_detect_mode(struct imx6ul_tsc *tsc)
static irqreturn_t tsc_irq_fn(int irq, void *dev_id)
{
struct imx6ul_tsc *tsc = dev_id;
int status;
int value;
int x, y;
int start;
u32 status;
u32 value;
u32 x, y;
u32 start;
status = readl(tsc->tsc_regs + REG_TSC_INT_STATUS);
@ -305,8 +305,8 @@ static irqreturn_t tsc_irq_fn(int irq, void *dev_id)
static irqreturn_t adc_irq_fn(int irq, void *dev_id)
{
struct imx6ul_tsc *tsc = dev_id;
int coco;
int value;
u32 coco;
u32 value;
coco = readl(tsc->adc_regs + REG_ADC_HS);
if (coco & 0x01) {