Re: [Qemu-devel] [PATCH] pflash: Avoid warnings from coverity

[Peter Maydell <peter.maydell@linaro.org>]

On 19 September 2012 17:41, Stefan Weil <sw@weilnetz.de> wrote:
> hw/pflash_cfi01.c:209:
> check_return: Calling function "bdrv_write" without checking return value (as is done elsewhere 35 out of 37 times).
>
> hw/pflash_cfi02.c:144:
> unterminated_default: The default case is not terminated by a 'break' statement.
>
> hw/pflash_cfi02.c:238:
> check_return: Calling function "bdrv_write" without checking return value (as is done elsewhere 35 out of 37 times).
>
> Signed-off-by: Stefan Weil <sw@weilnetz.de>
> ---
>  hw/pflash_cfi01.c |    6 ++++--
>  hw/pflash_cfi02.c |    7 +++++--
>  2 files changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/hw/pflash_cfi01.c b/hw/pflash_cfi01.c
> index 56ed33f..27ae4aa 100644
> --- a/hw/pflash_cfi01.c
> +++ b/hw/pflash_cfi01.c
> @@ -205,8 +205,10 @@ static void pflash_update(pflash_t *pfl, int offset,
>          /* round to sectors */
>          offset = offset >> 9;
>          offset_end = (offset_end + 511) >> 9;
> -        bdrv_write(pfl->bs, offset, pfl->storage + (offset << 9),
> -                   offset_end - offset);
> +        if (bdrv_write(pfl->bs, offset, pfl->storage + (offset << 9),
> +                       offset_end - offset) == -1) {
> +            fprintf(stderr, "pflash: Error writing to flash storage\n");
> +        }

...shouldn't we be propagating the write error up to the guest?
It feels like this change is just silencing the coverity error
without actually fixing the underlying problem.

-- PMM