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i2c: have I2C receive operation return uint8_t

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It is never supposed to fail and cannot return an error, so just
have it return the proper type.  Have it return 0xff on nothing
available, since that's what would happen on a real bus.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Corey Minyard 2018-11-14 11:50:50 -06:00
parent 93198b6cad
commit 2ac4c5f4d2
19 changed files with 37 additions and 44 deletions
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2
hw/timer/ds1338.c
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@ -117,7 +117,7 @@ static int ds1338_event(I2CSlave *i2c, enum i2c_event event)
return 0;
}
static int ds1338_recv(I2CSlave *i2c)
static uint8_t ds1338_recv(I2CSlave *i2c)
{
DS1338State *s = DS1338(i2c);
uint8_t res;