Re: [Qemu-devel] [PATCH v3] net: cadence_gem: fix compilation error when debug is on

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Hi Ramon,

On 6/15/19 7:15 AM, Ramon Fried wrote:
> defining CADENCE_GEM_ERR_DEBUG causes compilation
> errors, fix that.
> 
> Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
> ---
> v2: change %lx to HWADDR_PRIx and %lx to %zdx
> v3: change %zdx to %zx
> 
>  hw/net/cadence_gem.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
> index 7f63411430..ecee22525c 100644
> --- a/hw/net/cadence_gem.c
> +++ b/hw/net/cadence_gem.c
> @@ -982,8 +982,8 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
>              return -1;
>          }
>  
> -        DB_PRINT("copy %d bytes to 0x%x\n", MIN(bytes_to_copy, rxbufsize),
> -                rx_desc_get_buffer(s->rx_desc[q]));
> +        DB_PRINT("copy %d bytes to 0x%" HWADDR_PRIx "\n", MIN(bytes_to_copy, rxbufsize),
> +                rx_desc_get_buffer(s, s->rx_desc[q]));
>  
>          /* Copy packet data to emulated DMA buffer */
>          address_space_write(&s->dma_as, rx_desc_get_buffer(s, s->rx_desc[q]) +
> @@ -1156,7 +1156,7 @@ static void gem_transmit(CadenceGEMState *s)
>              if (tx_desc_get_length(desc) > sizeof(tx_packet) -
>                                                 (p - tx_packet)) {
>                  DB_PRINT("TX descriptor @ 0x%x too large: size 0x%x space " \
> -                         "0x%x\n", (unsigned)packet_desc_addr,
> +                         "0x%zx\n", (unsigned)packet_desc_addr,
>                           (unsigned)tx_desc_get_length(desc),
>                           sizeof(tx_packet) - (p - tx_packet));
>                  break;
> 

I still get an error when trying to build on 32bit host with
CADENCE_GEM_ERR_DEBUG enabled (pre-existing to your patch):

  CC      hw/net/cadence_gem.o
./hw/net/cadence_gem.c: In function 'gem_receive':
./hw/net/cadence_gem.c:973:14: error: format '%ld' expects argument of
type 'long int', but argument 4 has type 'size_t {aka unsigned int}'
[-Werror=format=]
     DB_PRINT("config bufsize: %d packet size: %ld\n", rxbufsize, size);
              ^
./hw/net/cadence_gem.c:38:24: note: in definition of macro 'DB_PRINT'
     fprintf(stderr, ## __VA_ARGS__); \
                        ^
cc1: all warnings being treated as errors
./rules.mak:69: recipe for target 'hw/net/cadence_gem.o' failed
make: *** [hw/net/cadence_gem.o] Error 1

However the 64bit host is indeed fixed, so I'm fine with your patch:
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Regards,

Phil.