[U-Boot] [PATCH] dfu: free entities when parsing fails

[U-Boot] [PATCH] dfu: free entities when parsing fails

[Stephen Warren]

From: Stephen Warren <swarren@nvidia.com>

When dfu_init_env_entities() fails part-way through, some entities may
have been added to dfu_list. These are only removed by dfu_free_entities().
If that function isn't called, those stale entities will still exist the
next time dfu_init_env_entities() is called, leading to confusion. Fix
do_dfu() to ensure that dfu_free_entities() is always called, to avoid
this confusion.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
---
 common/cmd_dfu.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/common/cmd_dfu.c b/common/cmd_dfu.c
index a03538dabb37..433bddd5d2bd 100644
--- a/common/cmd_dfu.c
+++ b/common/cmd_dfu.c
@@ -27,8 +27,9 @@ static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	ret = dfu_init_env_entities(interface, simple_strtoul(devstring,
 							      NULL, 10));
 	if (ret)
-		return ret;
+		goto done;
 
+	ret = CMD_RET_SUCCESS;
 	if (argc > 4 && strcmp(argv[4], "list") == 0) {
 		dfu_show_entities();
 		goto done;
@@ -61,7 +62,7 @@ done:
 	if (dfu_reset())
 		run_command("reset", 0);
 
-	return CMD_RET_SUCCESS;
+	return ret;
 }
 
 U_BOOT_CMD(dfu, CONFIG_SYS_MAXARGS, 1, do_dfu,
-- 
1.8.1.5

[U-Boot] [PATCH] dfu: free entities when parsing fails

[Lukasz Majewski]

Hi Stephen,

> From: Stephen Warren <swarren@nvidia.com>
> 
> When dfu_init_env_entities() fails part-way through, some entities may
> have been added to dfu_list. These are only removed by
> dfu_free_entities(). If that function isn't called, those stale
> entities will still exist the next time dfu_init_env_entities() is
> called, leading to confusion. Fix do_dfu() to ensure that
> dfu_free_entities() is always called, to avoid this confusion.
> 
> Signed-off-by: Stephen Warren <swarren@nvidia.com>
> ---
>  common/cmd_dfu.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/common/cmd_dfu.c b/common/cmd_dfu.c
> index a03538dabb37..433bddd5d2bd 100644
> --- a/common/cmd_dfu.c
> +++ b/common/cmd_dfu.c
> @@ -27,8 +27,9 @@ static int do_dfu(cmd_tbl_t *cmdtp, int flag, int
> argc, char * const argv[]) ret = dfu_init_env_entities(interface,
> simple_strtoul(devstring, NULL, 10));
>  	if (ret)
> -		return ret;
> +		goto done;
>  
> +	ret = CMD_RET_SUCCESS;
>  	if (argc > 4 && strcmp(argv[4], "list") == 0) {
>  		dfu_show_entities();
>  		goto done;
> @@ -61,7 +62,7 @@ done:
>  	if (dfu_reset())
>  		run_command("reset", 0);
>  
> -	return CMD_RET_SUCCESS;
> +	return ret;
>  }
>  
>  U_BOOT_CMD(dfu, CONFIG_SYS_MAXARGS, 1, do_dfu,

Acked-by: Lukasz Majewski <l.majewski@samsung.com>

Test HW: Exynos4412 - Trats2

Tested-by: Lukasz Majewski <l.majewski@samsung.com>

-- 
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group