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-rw-r--r--channels/chan_iax2.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index 6456f4637..dda1e688c 100644
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -1469,7 +1469,7 @@ static int try_firmware(char *s)
return -1;
}
fwh = mmap(NULL, stbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
- if (!fwh) {
+ if (fwh == (void *) -1) {
ast_log(LOG_WARNING, "mmap failed: %s\n", strerror(errno));
close(fd);
return -1;