git: b3bdffd7a428 - main - e1000: fix possible variable overflow

The branch main has been updated by kbowling:

URL: https://cgit.FreeBSD.org/src/commit/?id=b3bdffd7a428e43934772850966a3f80638c666f

commit b3bdffd7a428e43934772850966a3f80638c666f
Author:     Lukasz Czapnik <lukasz.czapnik@intel.com>
AuthorDate: 2026-05-20 12:52:40 +0000
Commit:     Kevin Bowling <kbowling@FreeBSD.org>
CommitDate: 2026-08-11 18:47:58 +0000

    e1000: fix possible variable overflow
    
    DPDK commit message
    
    net/e1000/base: fix possible variable overflow
    
    Bits can be lost as temporary math is done on signed variables and the
    result is assigned to an unsigned variable. Cast to u32 to force the
    compiler to do operations on unsigned temporary variables.
    
    Fixes: af75078fece3 ("first public release")
    Cc: stable@dpdk.org
    
    Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
    Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
    Acked-by: Bruce Richardson <bruce.richardson@intel.com>
    
    Obtained from:  DPDK (214cb0d7f1)
    MFC after:      2 weeks
---
 sys/dev/e1000/e1000_mac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/dev/e1000/e1000_mac.c b/sys/dev/e1000/e1000_mac.c
index 13e25f9944fb..dcebd9cf1eb9 100644
--- a/sys/dev/e1000/e1000_mac.c
+++ b/sys/dev/e1000/e1000_mac.c
@@ -1915,7 +1915,7 @@ s32 e1000_blink_led_generic(struct e1000_hw *hw)
 			     (mode == E1000_LEDCTL_MODE_LED_OFF))) {
 				ledctl_blink &=
 				    ~(E1000_LEDCTL_LED0_MODE_MASK << i);
-				ledctl_blink |= (E1000_LEDCTL_LED0_BLINK |
+				ledctl_blink |= (u32)(E1000_LEDCTL_LED0_BLINK |
 						 E1000_LEDCTL_MODE_LED_ON) << i;
 			}
 		}