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i2c: Don't check return value from i2c_recv()

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i2c_recv() cannot fail, so there is no need to check the return
value.  It also returns unt8_t, so comparing with < 0 is not
meaningful.

Fix up various I2C controllers to remove the unneeded code.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Corey Minyard 2018-11-20 11:13:42 -06:00
parent 05f9f17e2c
commit bc15cde0c4
3 changed files with 5 additions and 24 deletions
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9
hw/i2c/aspeed_i2c.c
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@ -189,16 +189,11 @@ static uint8_t aspeed_i2c_get_state(AspeedI2CBus *bus)
static void aspeed_i2c_handle_rx_cmd(AspeedI2CBus *bus)
{
int ret;
uint8_t ret;
aspeed_i2c_set_state(bus, I2CD_MRXD);
ret = i2c_recv(bus->bus);
if (ret < 0) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: read failed\n", __func__);
ret = 0xff;
} else {
bus->intr_status |= I2CD_INTR_RX_DONE;
}
bus->intr_status |= I2CD_INTR_RX_DONE;
bus->buf = (ret & I2CD_BYTE_BUF_RX_MASK) << I2CD_BYTE_BUF_RX_SHIFT;
if (bus->cmd & I2CD_M_S_RX_CMD_LAST) {
i2c_nack(bus->bus);