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Don't write 0-length data

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marschap
2005-07-01 11:28:13 +00:00
parent f9d35cad9e
commit 0705a4255e
1 changed files with 2 additions and 1 deletions
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server/drivers/CFontz633io.c
+2 -1
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@@ -139,7 +139,8 @@ send_packet(int fd, COMMAND_PACKET *out)
{ {
write(fd, &out->command, 1); write(fd, &out->command, 1);
write(fd, &out->data_length, 1); write(fd, &out->data_length, 1);
write(fd, out->data, out->data_length); if (out->data_length > 0)
write(fd, out->data, out->data_length);
/* calculate & send the CRC */ /* calculate & send the CRC */
out->crc.as_word = get_crc((unsigned char *) out, out->data_length + 2, 0xFFFF); out->crc.as_word = get_crc((unsigned char *) out, out->data_length + 2, 0xFFFF);