[Qemu-devel] [PATCH] hw/arm/virt: fix pl011 and pl031 irq flags

[Peter Maydell]

The pl011 and pl031 devices both use level triggered interrupts,
but the device tree we construct was incorrectly telling the
kernel to configure the GIC to treat them as edge triggered.
This meant that output from the pl011 would hang after a while.

Signed-off-by: Peter Maydell <address@hidden>
Cc: address@hidden
---
Thanks to Christoffer Dall for figuring out the cause of the hangs here.

 hw/arm/virt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index e8f231e..1b343f0 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -371,7 +371,7 @@ static void create_uart(const VirtBoardInfo *vbi, qemu_irq 
*pic)
                                      2, base, 2, size);
     qemu_fdt_setprop_cells(vbi->fdt, nodename, "interrupts",
                                GIC_FDT_IRQ_TYPE_SPI, irq,
-                               GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
+                               GIC_FDT_IRQ_FLAGS_LEVEL_HI);
     qemu_fdt_setprop_cells(vbi->fdt, nodename, "clocks",
                                vbi->clock_phandle, vbi->clock_phandle);
     qemu_fdt_setprop(vbi->fdt, nodename, "clock-names",
@@ -398,7 +398,7 @@ static void create_rtc(const VirtBoardInfo *vbi, qemu_irq 
*pic)
                                  2, base, 2, size);
     qemu_fdt_setprop_cells(vbi->fdt, nodename, "interrupts",
                            GIC_FDT_IRQ_TYPE_SPI, irq,
-                           GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
+                           GIC_FDT_IRQ_FLAGS_LEVEL_HI);
     qemu_fdt_setprop_cell(vbi->fdt, nodename, "clocks", vbi->clock_phandle);
     qemu_fdt_setprop_string(vbi->fdt, nodename, "clock-names", "apb_pclk");
     g_free(nodename);
-- 
1.9.1