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-rw-r--r--ft2232_spi.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/ft2232_spi.c b/ft2232_spi.c
index 520eb6e1..9f4c7f03 100644
--- a/ft2232_spi.c
+++ b/ft2232_spi.c
@@ -468,8 +468,8 @@ static int ft2232_spi_send_command(struct flashctx *flash,
static unsigned char *buf = NULL;
/* failed is special. We use bitwise ops, but it is essentially bool. */
int i = 0, ret = 0, failed = 0;
- int bufsize;
- static int oldbufsize = 0;
+ size_t bufsize;
+ static size_t oldbufsize = 0;
if (writecnt > 65536 || readcnt > 65536)
return SPI_INVALID_LENGTH;
@@ -477,7 +477,7 @@ static int ft2232_spi_send_command(struct flashctx *flash,
/* buf is not used for the response from the chip. */
bufsize = max(writecnt + 9, 260 + 9);
/* Never shrink. realloc() calls are expensive. */
- if (bufsize > oldbufsize) {
+ if (!buf || bufsize > oldbufsize) {
buf = realloc(buf, bufsize);
if (!buf) {
msg_perr("Out of memory!\n");