[U-Boot] [PATCH] cmd: usb: check usb_stor_curr_dev in usb dev with no parameter

[Marek Vasut]

On 08/03/2017 03:25 PM, Patrick DELAUNAY wrote:
> Hi Marek,

Hi,

please stop top-posting.

> Do think that this minor patch could be integrated in v2017.09 ?
> 
> http://patchwork.ozlabs.org/patch/762328/

Fix up the commit message, detail a bit more how to trigger the issue
and use errno.h return value (-ENODEV ?) in the new code . Send V2 and
I'll pick it.

> Regards
> Patrick
> 
>> -----Original Message-----
>> From: Patrick DELAUNAY
>> Sent: lundi 15 mai 2017 11:16
>> To: u-boot at lists.denx.de
>> Cc: Yann GAUTIER <yann.gautier at st.com>; Patrick DELAUNAY
>> <patrick.delaunay at st.com>; Michal Simek <michal.simek at xilinx.com>;
>> Simon Glass <sjg at chromium.org>; Peng Fan <van.freenix at gmail.com>;
>> Hans de Goede <hdegoede at redhat.com>
>> Subject: [PATCH] cmd: usb: check usb_stor_curr_dev in usb dev with no
>> parameter
>> Importance: High
>>
>> If 'usb start' does not find devices, the command 'usb dev'
>> without parameter will lead to error= USB device -1: data abort A check on
>> usb_stor_curr_dev avoid the issue
>>
>> Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
>> ---
>>
>>  cmd/usb.c | 4 ++++
>>  1 file changed, 4 insertions(+)
>>
>> diff --git a/cmd/usb.c b/cmd/usb.c
>> index 4fa456e..bc90553 100644
>> --- a/cmd/usb.c
>> +++ b/cmd/usb.c
>> @@ -803,6 +803,10 @@ static int do_usb(cmd_tbl_t *cmdtp, int flag, int argc,
>> char * const argv[])
>>  			printf("... is now current device\n");
>>  			return 0;
>>  		} else {
>> +			if (usb_stor_curr_dev < 0) {
>> +				printf("no current device selected\n");
>> +				return 1;
>> +			}
>>  			printf("\nUSB device %d: ", usb_stor_curr_dev);
>>  			stor_dev = blk_get_devnum_by_type(IF_TYPE_USB,
>>  							  usb_stor_curr_dev);
>> --
>> 1.9.1
> 


-- 
Best regards,
Marek Vasut