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core: cib: fix overflow handling

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This commit is contained in:
Kaspar Schleiser 2017-11-22 17:53:16 +01:00
parent 2c46e0928e
commit a8ec624ac4
1 changed files with 2 additions and 2 deletions
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4
core/include/cib.h
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@ -92,7 +92,7 @@ static inline unsigned int cib_full(const cib_t *cib)
*/ */
static inline int cib_get(cib_t *__restrict cib) static inline int cib_get(cib_t *__restrict cib)
{ {
if (cib->write_count > cib->read_count) { if (cib_avail(cib)) {
return (int) (cib->read_count++ & cib->mask); return (int) (cib->read_count++ & cib->mask);
} }
@ -108,7 +108,7 @@ static inline int cib_get(cib_t *__restrict cib)
*/ */
static inline int cib_peek(cib_t *__restrict cib) static inline int cib_peek(cib_t *__restrict cib)
{ {
if (cib->write_count > cib->read_count) { if (cib_avail(cib)) {
return (int) (cib->read_count & cib->mask); return (int) (cib->read_count & cib->mask);
} }