The correct format string for resource_size_t is %pa which acts on the address of the variable to be formatted [1].
[1] https://elixir.bootlin.com/linux/v6.11.3/source/Documentation/core-api/printk-formats.rst#L229 Introduced by commit 9d9326d3bc0e ("phy: Change mii_bus id field to a string") Flagged by gcc-14 as: arch/powerpc/platforms/82xx/ep8248e.c: In function 'ep8248e_mdio_probe': arch/powerpc/platforms/82xx/ep8248e.c:131:46: warning: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'resource_size_t' {aka 'long long unsigned int'} [-Wformat=] 131 | snprintf(bus->id, MII_BUS_ID_SIZE, "%x", res.start); | ~^ ~~~~~~~~~ | | | | | resource_size_t {aka long long unsigned int} | unsigned int | %llx No functional change intended. Compile tested only. Reported-by: Geert Uytterhoeven <ge...@linux-m68k.org> Link: https://lore.kernel.org/netdev/711d7f6d-b785-7560-f4dc-c6aad2cc...@linux-m68k.org/ Signed-off-by: Simon Horman <ho...@kernel.org> --- arch/powerpc/platforms/82xx/ep8248e.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/82xx/ep8248e.c b/arch/powerpc/platforms/82xx/ep8248e.c index 3dc65ce1f175..8f918916e631 100644 --- a/arch/powerpc/platforms/82xx/ep8248e.c +++ b/arch/powerpc/platforms/82xx/ep8248e.c @@ -128,7 +128,7 @@ static int ep8248e_mdio_probe(struct platform_device *ofdev) bus->name = "ep8248e-mdio-bitbang"; bus->parent = &ofdev->dev; - snprintf(bus->id, MII_BUS_ID_SIZE, "%x", res.start); + snprintf(bus->id, MII_BUS_ID_SIZE, "%pa", &res.start); ret = of_mdiobus_register(bus, ofdev->dev.of_node); if (ret)
