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[U-Boot,v3,8/8] tftp.c: fix CONFIG_TFTP_TSIZE for small files

Message ID 9a2167536027e3dfbfce6db79769cc7579230a3c.1438636040.git.marcel.ziswiler@toradex.com
State Superseded
Delegated to: Tom Rini
Headers show

Commit Message

Marcel Ziswiler Aug. 3, 2015, 9:15 p.m. UTC 
From: Max Krummenacher <max.krummenacher@toradex.com>

CONFIG_TFTP_TSIZE should limit a tftp downloads progress to 50 '#'
chars. Make this work also for small files.

If the file size is small, i.e. smaller than 2 tftp block sizes the
number of '#' can get much larger. i.e. with a 1 byte file 65000
characters are printed, with a 512 byte file around 500.

When using CONFIG TFTP BLOCKSIZE together with CONFIG_IP_DEFRAG the
issue is more notable.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Marek Vasut <marex@denx.de>
---
Changes in v2: run it through checkpatch.pl and fix missing space in
if clause as suggested by Marek

 net/tftp.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/net/tftp.c b/net/tftp.c
index 3e99e73..89be32a 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -249,6 +249,8 @@  static void show_block_marker(void)
 	if (tftp_tsize) {
 		ulong pos = tftp_cur_block * tftp_block_size +
 			tftp_block_wrap_offset;
+		if (pos > tftp_tsize)
+			pos = tftp_tsize;
 
 		while (tftp_tsize_num_hash < pos * 50 / tftp_tsize) {
 			putc('#');