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Re: [PATCH 2/3] hw/block/nvme: fix potential compilation error
From: |
Philippe Mathieu-Daudé |
Subject: |
Re: [PATCH 2/3] hw/block/nvme: fix potential compilation error |
Date: |
Mon, 22 Feb 2021 14:16:29 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 |
On 2/22/21 8:06 AM, Klaus Jensen wrote:
> From: Gollu Appalanaidu <anaidu.gollu@samsung.com>
>
> assert may be compiled to a noop and we could end up returning an
> uninitialized status.
Per commit 262a69f4282 ("osdep.h: Prohibit disabling assert()
in supported builds") this shouldn't be possible. Anyhow cleanup
is good.
>
> Fix this by always returning Internal Device Error as a fallback.
>
> Signed-off-by: Gollu Appalanaidu <anaidu.gollu@samsung.com>
> Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
> ---
> hw/block/nvme.c | 11 +++++------
> 1 file changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/hw/block/nvme.c b/hw/block/nvme.c
> index ddc83f7f7a19..897b9ff0db91 100644
> --- a/hw/block/nvme.c
> +++ b/hw/block/nvme.c
> @@ -1232,7 +1232,7 @@ static uint16_t nvme_check_zone_write(NvmeNamespace
> *ns, NvmeZone *zone,
>
> static uint16_t nvme_check_zone_state_for_read(NvmeZone *zone)
> {
> - uint16_t status;
> + uint64_t zslba = zone->d.zslba;
>
> switch (nvme_get_zone_state(zone)) {
> case NVME_ZONE_STATE_EMPTY:
> @@ -1241,16 +1241,15 @@ static uint16_t
> nvme_check_zone_state_for_read(NvmeZone *zone)
> case NVME_ZONE_STATE_FULL:
> case NVME_ZONE_STATE_CLOSED:
> case NVME_ZONE_STATE_READ_ONLY:
> - status = NVME_SUCCESS;
> - break;
> + return NVME_SUCCESS;
> case NVME_ZONE_STATE_OFFLINE:
> - status = NVME_ZONE_OFFLINE;
> - break;
> + trace_pci_nvme_err_zone_is_offline(zslba);
> + return NVME_ZONE_OFFLINE;
> default:
> assert(false);
> }
>
> - return status;
> + return NVME_INTERNAL_DEV_ERROR;
> }
>
> static uint16_t nvme_check_zone_read(NvmeNamespace *ns, uint64_t slba,
>