From: Francisco Iglesias <frasse.iglesias@gmail.com>

Don't set TX FIFO UNDERFLOW interrupt after transmitting the commands.
Also update interrupts after reading out the interrupt status.

Signed-off-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Acked-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20171126231634.9531-12-frasse.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/ssi/xilinx_spips.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/hw/ssi/xilinx_spips.c b/hw/ssi/xilinx_spips.c
index ab54da8..3805d8b 100644
--- a/hw/ssi/xilinx_spips.c
+++ b/hw/ssi/xilinx_spips.c
@@ -329,9 +329,6 @@ static void xilinx_spips_flush_txfifo(XilinxSPIPS *s)
         uint8_t addr_length;
 
         if (fifo8_is_empty(&s->tx_fifo)) {
-            if (!(s->regs[R_LQSPI_CFG] & LQSPI_CFG_LQ_MODE)) {
-                s->regs[R_INTR_STATUS] |= IXR_TX_FIFO_UNDERFLOW;
-            }
             xilinx_spips_update_ixr(s);
             return;
         } else if (s->snoop_state == SNOOP_STRIPING) {
@@ -530,6 +527,7 @@ static uint64_t xilinx_spips_read(void *opaque, hwaddr addr,
         ret = s->regs[addr] & IXR_ALL;
         s->regs[addr] = 0;
         DB_PRINT_L(0, "addr=" TARGET_FMT_plx " = %x\n", addr * 4, ret);
+        xilinx_spips_update_ixr(s);
         return ret;
     case R_INTR_MASK:
         mask = IXR_ALL;
-- 
2.7.4