[PATCH] boot: call dhcp_run in pxe bootmethod

[Heiko Stuebner]

A recent change tried to speed up EFI booting by not calling dhcp_run
from eth_bootdev_hunt() every time. PXE so far relied on that dhcp_run
call to get an IP address.

Fix that by adding a dhcp_run call to the pxe bootflow, with autoload
disabled to only get the ip address and nothing else.

Suggested-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
Fixes: 1f68057e0320 ("net: eth_bootdev_hunt() should not run DHCP")
Signed-off-by: Heiko Stuebner <heiko at sntech.de>
---
This also seems to work, to fix the dhcp problem.

So this is the counter-idea to the revert submitted in 
https://lore.kernel.org/u-boot/20250401083830.2320479-1-heiko@sntech.de/

Only this one or the revert patch should be applied.

 boot/bootmeth_pxe.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/boot/bootmeth_pxe.c b/boot/bootmeth_pxe.c
index b91e61bcbc4..6e5e0f99ea4 100644
--- a/boot/bootmeth_pxe.c
+++ b/boot/bootmeth_pxe.c
@@ -73,6 +73,10 @@ static int extlinux_pxe_read_bootflow(struct udevice *dev,
 		return log_msg_ret("pxeb", -EPERM);
 	addr = simple_strtoul(addr_str, NULL, 16);
 
+	ret = dhcp_run(addr, NULL, false);
+	if (ret)
+		return log_msg_ret("dhc", ret);
+
 	log_debug("calling pxe_get()\n");
 	ret = pxe_get(addr, &bootdir, &size, false);
 	log_debug("pxe_get() returned %d\n", ret);
-- 
2.47.2