On Wed, Oct 21, 2015 at 03:44:04PM +0200, Ludovic Desroches wrote: > In some cases, we could start a new i2c transfer with the RXRDY flag > set. It is not a clean state and it leads to print annoying error > messages even if there no real issue. The cause is only having garbage > data in the Receive Holding Register because of a weird behavior of the > RXRDY flag. > > Signed-off-by: Ludovic Desroches <[email protected]> > Fixes: 93563a6a71bb ("i2c: at91: fix a race condition when using the DMA > controller") > Reported-by: Peter Rosin <[email protected]> > Tested-by: Peter Rosin <[email protected]> > Cc: [email protected] #4.1
SMATCH
drivers/i2c/busses/i2c-at91.c:602 at91_do_twi_transfer warn: unused return: sr
= at91_twi_read()
drivers/i2c/busses/i2c-at91.c: In function 'at91_do_twi_transfer':
drivers/i2c/busses/i2c-at91.c:550:11: warning: variable 'sr' set but not used
[-Wunused-but-set-variable]
unsigned sr;
^
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