From e3a46e3ee22876606254560ec4c10903074475c2 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 13 Apr 2016 22:29:52 -0600 Subject: [PATCH] serial: bcm283x_mu: make pending values more explicit dm_serial_ops.pending should return the number of characters, not just a valid C Boolean integer value. The existing code does already does this, but only as an accident since BCM283X_MU_LSR_RX_READY happens to be BIT(0). Enhance the code to be more explicit about the values it returns. Suggested-by: Simon Glass Signed-off-by: Stephen Warren --- drivers/serial/serial_bcm283x_mu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/serial/serial_bcm283x_mu.c b/drivers/serial/serial_bcm283x_mu.c index fc36bc0..7357bbf 100644 --- a/drivers/serial/serial_bcm283x_mu.c +++ b/drivers/serial/serial_bcm283x_mu.c @@ -116,9 +116,9 @@ static int bcm283x_mu_serial_pending(struct udevice *dev, bool input) if (input) { WATCHDOG_RESET(); - return lsr & BCM283X_MU_LSR_RX_READY; + return (lsr & BCM283X_MU_LSR_RX_READY) ? 1 : 0; } else { - return !(lsr & BCM283X_MU_LSR_TX_IDLE); + return (lsr & BCM283X_MU_LSR_TX_IDLE) ? 0 : 1; } } -- 2.7.4