[U-Boot] [PATCH] cmd_i2c: quit I2C commands immediately on error

[Heiko Schocher <hs@denx.de>]

Hello Masahiro,

Am 05.02.2015 05:50, schrieb Masahiro Yamada:
> 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>
> ---
>
>   common/cmd_i2c.c | 26 +++++++++++++-------------
>   1 file changed, 13 insertions(+), 13 deletions(-)

Applied to u-boot-i2c.git, thanks!

bye,
Heiko
>
> diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
> index 7c3ad00..12ce3f3 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
>

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany