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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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12
hw/i2c/imx_i2c.c
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@@ -120,7 +120,7 @@ static uint64_t imx_i2c_read(void *opaque, hwaddr offset,
value = s->i2dr_read;
if (imx_i2c_is_master(s)) {
int ret = 0xff;
uint8_t ret = 0xff;
if (s->address == ADDR_RESET) {
/* something is wrong as the address is not set */
@@ -133,15 +133,7 @@ static uint64_t imx_i2c_read(void *opaque, hwaddr offset,
} else {
/* get the next byte */
ret = i2c_recv(s->bus);
if (ret >= 0) {
imx_i2c_raise_interrupt(s);
} else {
qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: read failed "
"for device 0x%02x\n", TYPE_IMX_I2C,
__func__, s->address);
ret = 0xff;
}
imx_i2c_raise_interrupt(s);
}
s->i2dr_read = ret;