Merge pull request #940 from HiFiPhile/fifo_fix

Fix fifo overflow correction.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/common/tusb_fifo.c b/src/common/tusb_fifo.c
index 1eb886aa1..73217cf75 100644
--- a/src/common/tusb_fifo.c
+++ b/src/common/tusb_fifo.c
@@ -325,7 +325,7 @@ static uint16_t advance_pointer(tu_fifo_t* f, uint16_t p, uint16_t offset)
   // We are exploiting the wrap around to the correct index
 
   // TODO warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow]
-  if ((p > p + offset) || (p + offset > f->max_pointer_idx))
+  if ((p > (uint16_t)(p + offset)) || ((uint16_t)(p + offset) > f->max_pointer_idx))
   {
     p = (p + offset) + f->non_used_index_space;
   }
@@ -342,7 +342,7 @@ static uint16_t backward_pointer(tu_fifo_t* f, uint16_t p, uint16_t offset)
   // We limit the index space of p such that a correct wrap around happens
   // Check for a wrap around or if we are in unused index space - This has to be checked first!!
   // We are exploiting the wrap around to the correct index
-  if ((p < p - offset) || (p - offset > f->max_pointer_idx))
+  if ((p < (uint16_t)(p - offset)) || ((uint16_t)(p - offset) > f->max_pointer_idx))
   {
     p = (p - offset) - f->non_used_index_space;
   }