Re: [PATCH 2/2] hw/nvme: cleanup error reporting in nvme_init_pci()

[Markus Armbruster]

Klaus Jensen <its@irrelevant.dk> writes:

> From: Klaus Jensen <k.jensen@samsung.com>
>
> Replace the local Error variable with errp and ERRP_GUARD().
>
> Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
> ---
>  hw/nvme/ctrl.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
> index 4cc6ae753295..38eb5ec54f9d 100644
> --- a/hw/nvme/ctrl.c
> +++ b/hw/nvme/ctrl.c
> @@ -7345,13 +7345,13 @@ static int nvme_add_pm_capability(PCIDevice *pci_dev, 
> uint8_t offset)
>  
>  static int nvme_init_pci(NvmeCtrl *n, PCIDevice *pci_dev, Error **errp)
>  {
> +    ERRP_GUARD();
> +

Drop the blank line, please.

>      uint8_t *pci_conf = pci_dev->config;
>      uint64_t bar_size;
>      unsigned msix_table_offset, msix_pba_offset;
>      int ret;
>  
> -    Error *err = NULL;
> -
>      pci_conf[PCI_INTERRUPT_PIN] = 1;
>      pci_config_set_prog_interface(pci_conf, 0x2);
>  
> @@ -7388,13 +7388,13 @@ static int nvme_init_pci(NvmeCtrl *n, PCIDevice 
> *pci_dev, Error **errp)
>      }
>      ret = msix_init(pci_dev, n->params.msix_qsize,
>                      &n->bar0, 0, msix_table_offset,
> -                    &n->bar0, 0, msix_pba_offset, 0, &err);
> +                    &n->bar0, 0, msix_pba_offset, 0, errp);
>      if (ret < 0) {
>          if (ret == -ENOTSUP) {
> -            warn_report_err(err);
> +            warn_report_err(*errp);
> +            *errp = NULL;
>          } else {
> -            error_propagate(errp, err);
> -            return ret;
> +            return -1;
>          }
>      }

Suggest to reduce nesting:

       if (ret == -ENOTSUP) {
           warn_report_err(*errp);
           *errp = NULL;
       } else if (ret < 0) {
           return -1;
       }

Entirely up to you.

Reviewed-by: Markus Armbruster <armbru@redhat.com>