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-rw-r--r--hw/input/tsc2005.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/input/tsc2005.c b/hw/input/tsc2005.c
index 941f163d36..ac7f54eeaf 100644
--- a/hw/input/tsc2005.c
+++ b/hw/input/tsc2005.c
@@ -406,6 +406,9 @@ uint32_t tsc2005_txrx(void *opaque, uint32_t value, int len)
static void tsc2005_timer_tick(void *opaque)
{
TSC2005State *s = opaque;
+ unsigned int function = s->function;
+
+ assert(function < ARRAY_SIZE(mode_regs));
/* Timer ticked -- a set of conversions has been finished. */
@@ -413,7 +416,7 @@ static void tsc2005_timer_tick(void *opaque)
return;
s->busy = false;
- s->dav |= mode_regs[s->function];
+ s->dav |= mode_regs[function];
s->function = -1;
tsc2005_pin_update(s);
}