> The message is likely a false positive. Could you post the init_module code?
Sure, here it is. I removed some simple array initializations and
error handling code which is not invoked in this scenario to make
functions shorter. Two relevant places are marked with <<<
static struct rtdm_device device = {
.struct_version = RTDM_DEVICE_STRUCT_VER,
.device_flags = RTDM_NAMED_DEVICE,
.context_size = sizeof(context_t),
.device_name = DEVICE_NAME,
.open_nrt = pwm_rtdm_open_nrt,
.ops = {
.close_nrt = pwm_rtdm_close_nrt,
.read_nrt = pwm_rtdm_read_nrt,
.write_nrt = pwm_rtdm_write_nrt,
},
.device_class = RTDM_CLASS_EXPERIMENTAL,
.device_sub_class = SOME_SUB_CLASS,
.profile_version = 1,
.driver_name = "TB6612FNG-CTL",
.driver_version = RTDM_DRIVER_VER(0, 1, 2),
.peripheral_name = "TB6612FNG dual motor driver",
.provider_name = "Andrey Nechypurenko",
.proc_name = device.device_name,
};
int __init pwm_rtdm_init(void)
{
int res;
res = rtdm_dev_register(&device);
if(res == 0)
rtdm_printk("TB6612FNG: driver registered without errors\n");
else
{
... error handling
}
res = initpwm();
return res;
}
int
initpwm(void)
{
int i;
int retval;
// Set GPIO mode and configuration
retval = InitGPIO(channels, sizeof(channels) / sizeof(channels[0]));
rtdm_printk("TB6612FNG: Starting PWM generation timers.\n");
retval = rtdm_timer_init(&up_timer, pwm_up, "up timer");
for(i = 0; i < RC_NUM; i++)
{
retval = rtdm_timer_init(&down_timer[i], pwm_down, "down timer");
}
retval = rtdm_timer_start(&up_timer,
PERIOD, // we will use periodic timer
PERIOD, // PERIOD period
RTDM_TIMERMODE_RELATIVE);
rtdm_printk("TB6612FNG: initializing encoder handlers\n");
retval = initializeEncoders(); // <<<< this is the function where
irq is requested and warning is printed
return 0;
}
int
initializeEncoders(void)
{
void __iomem *confmem = NULL;
int res = 0;
const int irq = gpio_to_irq(143);
rtdm_printk("IRQ for GPIO 143: %i\n", irq); // 303 for 143
// Enable interrupts for rotary encoders
confmem = ioremap(0x48200000, 0x05cc);
iowrite32(0, confmem + 0x0010); // sysconfig
iowrite32(1, confmem + 0x0050); // idle
iowrite32(0, confmem + 0x0174); // ILRm
// 15 = (gpio)143 - 128
iowrite32(1 << 15, confmem + 0x0088); // clear MIRn (INTCPS_MIR_CLEARn)
iounmap(confmem);
res = rtdm_irq_request(&irq_handles[0],
irq, //303 - something happens,
encoderIrqHandler,
RTDM_IRQTYPE_EDGE,
"wheel-encoder1",
NULL); <<<<<< This call causing the WARNING message
return res;
}
int
encoderIrqHandler(rtdm_irq_t *irq_handle)
{
++irq_count;
return RTDM_IRQ_HANDLED;
}
Thank you,
Andrey.
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