static int wait_for_pin(struct i2c_algo_pcf_data *adap, int *status) { int timeout = DEF_TIMEOUT; *status = get_pcf(adap, 1); #ifndef STUB_I2C while (timeout-- && (*status & I2C_PCF_PIN)) { adap->waitforpin(); *status = get_pcf(adap, 1); } if (*status & I2C_PCF_LAB) { handle_lab(adap, status); return(-EINTR); } #endif if (timeout <= 0) return(-1); else return(0); }
static int wait_for_pin(struct i2c_algo_pcf_data *adap, int *status) { int timeout = DEF_TIMEOUT; *status = get_pcf(adap, 1); while ((*status & I2C_PCF_PIN) && --timeout) { adap->waitforpin(adap->data); *status = get_pcf(adap, 1); } if (*status & I2C_PCF_LAB) { handle_lab(adap, status); return -EINTR; } if (timeout == 0) return -ETIMEDOUT; return 0; }