Re: [PATCH 2/2] iommu/arm: ipmmu-vmsa: Fix variable shadowing

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Tue, 7 Apr 2026, Michal Orzel wrote:
> Rename 'pdev' to 'pci_dev' in the dev_print_pci() macro to avoid
> shadowing local 'pdev' variables at call sites.
> 
> Remove the unused 'ret' declaration from ipmmu_assign_device() where
> the function-scope 'ret' is sufficient.
> 
> This fixes MISRA C R5.3.
> 
> Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>

Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>


> ---
>  xen/drivers/passthrough/arm/ipmmu-vmsa.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/xen/drivers/passthrough/arm/ipmmu-vmsa.c 
> b/xen/drivers/passthrough/arm/ipmmu-vmsa.c
> index ea9fa9ddf3ce..fa9ab9cb1330 100644
> --- a/xen/drivers/passthrough/arm/ipmmu-vmsa.c
> +++ b/xen/drivers/passthrough/arm/ipmmu-vmsa.c
> @@ -65,8 +65,8 @@
>          printk(lvl "ipmmu: %s: " fmt, dev_name((dev)), ## __VA_ARGS__);  \
>      else                                                                \
>      {                                                                   \
> -        struct pci_dev *pdev = dev_to_pci((dev));                       \
> -        printk(lvl "ipmmu: %pp: " fmt, &pdev->sbdf, ## __VA_ARGS__);     \
> +        struct pci_dev *pci_dev = dev_to_pci((dev));                       \
> +        printk(lvl "ipmmu: %pp: " fmt, &pci_dev->sbdf, ## __VA_ARGS__);     \
>      }                                                                   \
>  })
>  #endif
> @@ -1171,8 +1171,6 @@ static int ipmmu_assign_device(struct domain *d, u8 
> devfn, struct device *dev,
>          /* dom_io is used as a sentinel for quarantined devices */
>          if ( d == dom_io )
>          {
> -            int ret;
> -
>              /*
>               * Try to de-assign: do not return error if it was already
>               * de-assigned.
> -- 
> 2.43.0
>