net: i825xx: Use absolute_pointer for memcpy from fixed memory location

[ Upstream commit dff2d13114f0beec448da9b3716204eb34b0cf41 ]

gcc 11.x reports the following compiler warning/error.

  drivers/net/ethernet/i825xx/82596.c: In function 'i82596_probe':
  arch/m68k/include/asm/string.h:72:25: error:
	'__builtin_memcpy' reading 6 bytes from a region of size 0 [-Werror=stringop-overread]

Use absolute_pointer() to work around the problem.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/i825xx/82596.c b/drivers/net/ethernet/i825xx/82596.c
index d719668a6684aa5f9a8b93b8a991a08b28cb004a..8efcec305fc54e83b0bb607d961ee9adda7ffbc9 100644 (file)
--- a/drivers/net/ethernet/i825xx/82596.c
+++ b/drivers/net/ethernet/i825xx/82596.c
@@ -1155,7 +1155,7 @@ struct net_device * __init i82596_probe(int unit)
                        err = -ENODEV;
                        goto out;
                }
-               memcpy(eth_addr, (void *) 0xfffc1f2c, ETH_ALEN);        /* YUCK! Get addr from NOVRAM */
+               memcpy(eth_addr, absolute_pointer(0xfffc1f2c), ETH_ALEN); /* YUCK! Get addr from NOVRAM */
                dev->base_addr = MVME_I596_BASE;
                dev->irq = (unsigned) MVME16x_IRQ_I596;
                goto found;