Hi, Dear Fabio

On 5/19/2014 10:02 AM, Fabio Estevam wrote:

From: Fabio Estevam fabio.estevam@freescale.com

Entering the maximum number of characters defined by CONFIG_SYS_CBSIZE into the console and hitting enter afterwards, causes a hang in the system because CONFIG_SYS_PBSIZE is not capable of storing the characters of the error message: "Unknown command '' - try 'help'"

Increase the size of CONFIG_SYS_PBSIZE so that it can store the error message and allows the error message to be printed correctly with no hang.

Signed-off-by: Fabio Estevam fabio.estevam@freescale.com

This problem affects many boards.

This hang up can be reproduced in at91sam9m10g45ek board.

Maybe a global fix is to add a CONFIG_SYS_PBSIZE entry into config_fallbacks and remove its definition from the board config files when it is defined as:

I think this way is a really fix for the issue. So it's better to generate such a patch to fix it for many boards in U-Boot.

Best Regards, Josh Wu

#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)

or even when it is equal to CONFIG_SYS_CBSIZE.

include/configs/mx6sabre_common.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/configs/mx6sabre_common.h b/include/configs/mx6sabre_common.h index e59a3b4..6017a20 100644 --- a/include/configs/mx6sabre_common.h +++ b/include/configs/mx6sabre_common.h @@ -217,7 +217,7 @@ #define CONFIG_SYS_CBSIZE 256

/* Print Buffer Size */ -#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16) +#define CONFIG_SYS_PBSIZE 384 #define CONFIG_SYS_MAXARGS 16 #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE