Shaunak Datar commented on a discussion on 
bsps/aarch64/raspberrypi/i2c/raspberrypi-i2c.c: 
https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/682#note_129381

 >      }
 >  
 >      if ( msgs[ i ].flags & I2C_M_RD ) {
 > -      C_REG( bus )       |= C_CLEAR | C_READ | C_ST; // Read packet transfer
 > +      C_REG( bus )       |= C_CLEAR | C_READ;

Yeah the polling version works with this. The C_ST is set in the 
`rpi_i2c_setup_and_transfer()` function

-- 
View it on GitLab: 
https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/682#note_129381
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