omap_gpmc: GPMC_IRQSTATUS is write-one-to-clear

Fix a bug in the handling of writes to GPMC_IRQSTATUS:
it behaves as "write one to clear, writing zero is ignored".

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/hw/omap_gpmc.c b/hw/omap_gpmc.c
index d16b28bd2..ff4d4854e 100644
--- a/hw/omap_gpmc.c
+++ b/hw/omap_gpmc.c
@@ -284,7 +284,7 @@ static void omap_gpmc_write(void *opaque, target_phys_addr_t addr,
         break;
 
     case 0x018:	/* GPMC_IRQSTATUS */
-        s->irqen = ~value;
+        s->irqen &= ~value;
         omap_gpmc_int_update(s);
         break;