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authorLuke T. Shumaker <lukeshu@lukeshu.com>2025-04-26 23:30:31 -0600
committerLuke T. Shumaker <lukeshu@lukeshu.com>2025-05-12 13:02:05 -0600
commit42729f477684b12735b572a4975d32fb1002a530 (patch)
tree8edcd3eede207af6d9ae2557f8fcb05290659597 /libhw_cr/rp2040_hwspi.c
parent5255dbd5196f0125b51d969c46e46ac5765db7ed (diff)
libhw_generic: io.h: Clarify that sum lenghts of iovecs must not be 0
Diffstat (limited to 'libhw_cr/rp2040_hwspi.c')
-rw-r--r--libhw_cr/rp2040_hwspi.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/libhw_cr/rp2040_hwspi.c b/libhw_cr/rp2040_hwspi.c
index c0b4fa4..ee03b03 100644
--- a/libhw_cr/rp2040_hwspi.c
+++ b/libhw_cr/rp2040_hwspi.c
@@ -158,12 +158,14 @@ static void rp2040_hwspi_readwritev(struct rp2040_hwspi *self, const struct dupl
uint8_t bogus_rx_dst;
+ size_t count = 0;
int pruned_iovcnt = 0;
- for (int i = 0; i < iovcnt; i++)
+ for (int i = 0; i < iovcnt; i++) {
+ count += iov[i].iov_len;
if (iov[i].iov_len)
pruned_iovcnt++;
- if (!pruned_iovcnt)
- return;
+ }
+ assert(count);
/* It doesn't *really* matter which aliases we choose:
*