[RFC PATCH 7/8] i2c-octeon: Faster operation when IFLG signals late

From: Peter Swain Some versions can deliver low-level twsi irq before twsi_ctl.iflg is set, leading to timeout-driven i/o. When an irq signals event, but woken task does not see the expected twsi_ctl.iflg, re-check about 80uS later. EEPROM reads on 100kHz i2c now measure

[RFC PATCH 7/8] i2c-octeon: Faster operation when IFLG signals late

From: Peter Swain Some versions can deliver low-level twsi irq before twsi_ctl.iflg is set, leading to timeout-driven i/o. When an irq signals event, but woken task does not see the expected twsi_ctl.iflg, re-check about 80uS later. EEPROM reads on 100kHz i2c now measure ~5.2kB/s, about 1/2