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Re: [Xen-devel] [PATCH 2/3] Remove useless ASSERT condition



Hi Artem,

On 09/10/2019 15:20, Artem Mygaiev wrote:
cnt is unsigned, so always >=0

Coverity-ID: 1381848
Signed-off-by: Artem Mygaiev <artem_mygaiev@xxxxxxxx>

Acked-by: Julien Grall <julien.grall@xxxxxxx>

---
  xen/drivers/char/scif-uart.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/drivers/char/scif-uart.c b/xen/drivers/char/scif-uart.c
index fa0b8274ca..9d3f66b55b 100644
--- a/xen/drivers/char/scif-uart.c
+++ b/xen/drivers/char/scif-uart.c
@@ -205,7 +205,7 @@ static int scif_uart_tx_ready(struct serial_port *port)
/* Check number of data bytes stored in TX FIFO */
      cnt = scif_readw(uart, SCIF_SCFDR) >> 8;
-    ASSERT( cnt >= 0 && cnt <= params->fifo_size );
+    ASSERT( cnt <= params->fifo_size );
return (params->fifo_size - cnt);
  }


Cheers,

--
Julien Grall

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