[PATCH 1/4] dfu: do not overwrite "dfu_alt_info"

[Siddharth Vadapalli]

From: Jonathan Humphreys <j-humphreys at ti.com>

For use-cases such as USB DFU Boot, "spl_dfu_cmd()" will setup the
appropriate value for "dfu_alt_info". To facilitate such use-cases and
in order to avoid overwriting the value of "dfu_alt_info", invoke the
"set_dfu_alt_info()" function only when "dfu_alt_info" is not defined.

Signed-off-by: Jonathan Humphreys <j-humphreys at ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli at ti.com>
---
 drivers/dfu/dfu.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index 756569217bb..ab8abae1d89 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -169,10 +169,13 @@ int dfu_init_env_entities(char *interface, char *devstr)
 	dfu_reinit_needed = false;
 	dfu_alt_info_changed = false;
 
+	str_env = env_get("dfu_alt_info");
 #ifdef CONFIG_SET_DFU_ALT_INFO
-	set_dfu_alt_info(interface, devstr);
+	if (!str_env) {
+		set_dfu_alt_info(interface, devstr);
+		str_env = env_get("dfu_alt_info");
+	}
 #endif
-	str_env = env_get("dfu_alt_info");
 	if (!str_env) {
 		pr_err("\"dfu_alt_info\" env variable not defined!\n");
 		return -EINVAL;
-- 
2.43.0