From 9e533cb0462a7d28ec14a816ea627d38ce48dbf3 Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <yamada.m@jp.panasonic.com>
Date: Thu, 5 Feb 2015 13:50:26 +0900
Subject: [PATCH] cmd_i2c: quit I2C commands immediately on error
If the i2c driver returns an error status, error out immediately.
Continuing the loop just results in printing error messages
again and again.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
common/cmd_i2c.c | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
index fe8f77aaec..62b0b4863d 100644
--- a/common/cmd_i2c.c
+++ b/common/cmd_i2c.c
@@ -518,7 +518,7 @@ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
ret = i2c_read(chip, addr, alen, linebuf, linebytes);
#endif
if (ret)
- i2c_report_err(ret, I2C_ERR_READ);
+ return i2c_report_err(ret, I2C_ERR_READ);
else {
printf("%04x:", addr);
cp = linebuf;
@@ -616,7 +616,7 @@ static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
ret = i2c_write(chip, addr++, alen, &byte, 1);
#endif
if (ret)
- i2c_report_err(ret, I2C_ERR_WRITE);
+ return i2c_report_err(ret, I2C_ERR_WRITE);
/*
* Wait for the write to complete. The write can take
* up to 10mSec (we allow a little more time).
@@ -798,16 +798,15 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg
ret = i2c_read(chip, addr, alen, (uchar *)&data, size);
#endif
if (ret)
- i2c_report_err(ret, I2C_ERR_READ);
- else {
- data = cpu_to_be32(data);
- if (size == 1)
- printf(" %02lx", (data >> 24) & 0x000000FF);
- else if (size == 2)
- printf(" %04lx", (data >> 16) & 0x0000FFFF);
- else
- printf(" %08lx", data);
- }
+ return i2c_report_err(ret, I2C_ERR_READ);
+
+ data = cpu_to_be32(data);
+ if (size == 1)
+ printf(" %02lx", (data >> 24) & 0x000000FF);
+ else if (size == 2)
+ printf(" %04lx", (data >> 16) & 0x0000FFFF);
+ else
+ printf(" %08lx", data);
nbytes = cli_readline(" ? ");
if (nbytes == 0) {
@@ -848,7 +847,8 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg
(uchar *)&data, size);
#endif
if (ret)
- i2c_report_err(ret, I2C_ERR_WRITE);
+ return i2c_report_err(ret,
+ I2C_ERR_WRITE);
#ifdef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS
udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
#endif
--
2.39.5