On 02/01/2016 11:34 AM, Arnd Bergmann wrote:
> The amso1100 driver prints a phys_addr_t by casting it to a pointer,
> which causes a warning when phys_addr_t is 64-bit and pointers
> are 32-bit:
>
> drivers/staging/rdma/amso1100/c2.c: In function 'c2_rx_error':
> drivers/staging/rdma/amso1100/c2.c:430:4: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
>
> This changes the format string to print the address as a 64-bit
> number all the time to avoids the warnings. Ideally we would use
> the %pap format string for phys_addr_t, but that doesn't work
> here easily as it requires passing a pointer to the address.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> Found on ARM randconfig testing. This must have been there forever but is
> rather hard to trigger even with randconfig builds.
>
> diff --git a/drivers/staging/rdma/amso1100/c2.c b/drivers/staging/rdma/amso1100/c2.c
> index b46ebd1ae15a..170a42a60552 100644
> --- a/drivers/staging/rdma/amso1100/c2.c
> +++ b/drivers/staging/rdma/amso1100/c2.c
> @@ -426,8 +426,8 @@ static void c2_rx_error(struct c2_port *c2_port, struct c2_element *elem)
> pr_debug(" index : %Zu\n",
> elem - c2_port->rx_ring.start);
> pr_debug(" len : %u\n", rx_desc->len);
> - pr_debug(" rxp_hdr : %p [PA %p]\n", rxp_hdr,
> - (void *) __pa((unsigned long) rxp_hdr));
> + pr_debug(" rxp_hdr : %p [PA %016llx\n", rxp_hdr,
> + (u64)__pa((unsigned long) rxp_hdr));
> pr_debug(" flags : 0x%x\n", rxp_hdr->flags);
> pr_debug(" status: 0x%x\n", rxp_hdr->status);
> pr_debug(" len : %u\n", rxp_hdr->len);
>
I've sent off a deletion of this file to Linus already, sorry.
--
Doug Ledford <dledford@xxxxxxxxxx>
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