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xlnx_dp: fix iffy xlnx_dp_aux_push_tx_fifo 

xlnx_dp_aux_push_tx_fifo takes an immediate uint8_t and a buffer length,
which must be 1 because that is how many uint8_t's fit in a uint8_t.
Sure enough, that is what xlnx_dp_write passes to it, but the function
is just weird.  Therefore, make xlnx_dp_aux_push_tx_fifo look like
xlnx_dp_aux_push_rx_fifo, taking a pointer to the buffer.

Reported by Coverity.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Paolo Bonzini 2016-07-07 13:47:00 +01:00 committed by Peter Maydell
parent 90e26f5aac
commit bb14a1eda0
1 changed files with 6 additions and 4 deletions
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10
hw/display/xlnx_dp.c
View File

@ -438,10 +438,10 @@ static void xlnx_dp_aux_clear_tx_fifo(XlnxDPState *s)
fifo8_reset(&s->tx_fifo); fifo8_reset(&s->tx_fifo);
} }
static void xlnx_dp_aux_push_tx_fifo(XlnxDPState *s, uint8_t val, size_t len) static void xlnx_dp_aux_push_tx_fifo(XlnxDPState *s, uint8_t *buf, size_t len)
{ {
DPRINTF("Push %u data in tx_fifo\n", (unsigned)len); DPRINTF("Push %u data in tx_fifo\n", (unsigned)len);
fifo8_push_all(&s->tx_fifo, &val, len); fifo8_push_all(&s->tx_fifo, buf, len);
} }
static uint8_t xlnx_dp_aux_pop_tx_fifo(XlnxDPState *s) static uint8_t xlnx_dp_aux_pop_tx_fifo(XlnxDPState *s)
@ -806,9 +806,11 @@ static void xlnx_dp_write(void *opaque, hwaddr offset, uint64_t value,
* TODO: Power down things? * TODO: Power down things?
*/ */
break; break;
case DP_AUX_WRITE_FIFO: case DP_AUX_WRITE_FIFO: {
xlnx_dp_aux_push_tx_fifo(s, value, 1); uint8_t c = value;
xlnx_dp_aux_push_tx_fifo(s, &c, 1);
break; break;
}
case DP_AUX_CLOCK_DIVIDER: case DP_AUX_CLOCK_DIVIDER:
break; break;
case DP_AUX_REPLY_COUNT: case DP_AUX_REPLY_COUNT: