Patch "net: blackhole_dev: fix build warning for ethh set but not used" has been added to the 5.15-stable tree

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This is a note to let you know that I've just added the patch titled

    net: blackhole_dev: fix build warning for ethh set but not used

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-blackhole_dev-fix-build-warning-for-ethh-set-but.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 7d37ee59936ec6328dda2e3014bd50482fc64dae
Author: Breno Leitao <leitao@xxxxxxxxxx>
Date:   Fri Feb 2 07:13:29 2024 -0800

    net: blackhole_dev: fix build warning for ethh set but not used
    
    [ Upstream commit 843a8851e89e2e85db04caaf88d8554818319047 ]
    
    lib/test_blackhole_dev.c sets a variable that is never read, causing
    this following building warning:
    
            lib/test_blackhole_dev.c:32:17: warning: variable 'ethh' set but not used [-Wunused-but-set-variable]
    
    Remove the variable struct ethhdr *ethh, which is unused.
    
    Fixes: 509e56b37cc3 ("blackhole_dev: add a selftest")
    Signed-off-by: Breno Leitao <leitao@xxxxxxxxxx>
    Reviewed-by: Jiri Pirko <jiri@xxxxxxxxxx>
    Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/lib/test_blackhole_dev.c b/lib/test_blackhole_dev.c
index 4c40580a99a36..f247089d63c08 100644
--- a/lib/test_blackhole_dev.c
+++ b/lib/test_blackhole_dev.c
@@ -29,7 +29,6 @@ static int __init test_blackholedev_init(void)
 {
 	struct ipv6hdr *ip6h;
 	struct sk_buff *skb;
-	struct ethhdr *ethh;
 	struct udphdr *uh;
 	int data_len;
 	int ret;
@@ -61,7 +60,7 @@ static int __init test_blackholedev_init(void)
 	ip6h->saddr = in6addr_loopback;
 	ip6h->daddr = in6addr_loopback;
 	/* Ether */
-	ethh = (struct ethhdr *)skb_push(skb, sizeof(struct ethhdr));
+	skb_push(skb, sizeof(struct ethhdr));
 	skb_set_mac_header(skb, 0);
 
 	skb->protocol = htons(ETH_P_IPV6);




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