[PATCH 3/4] xen/arm: static-shmem: Drop unused size_cells

Michal Orzel posted 4 patches 8 months ago
[PATCH 3/4] xen/arm: static-shmem: Drop unused size_cells
Posted by Michal Orzel 8 months ago
Value stored in size_cells is never read because we're only interested
in retrieving gbase address of shmem region for which we only need
address cells.

Signed-off-by: Michal Orzel <michal.orzel@amd.com>
---
 xen/arch/arm/static-shmem.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/xen/arch/arm/static-shmem.c b/xen/arch/arm/static-shmem.c
index 8f87154c3587..c74fa13d4847 100644
--- a/xen/arch/arm/static-shmem.c
+++ b/xen/arch/arm/static-shmem.c
@@ -302,7 +302,7 @@ int __init process_shm(struct domain *d, struct kernel_info *kinfo,
         const struct membank *boot_shm_bank;
         const struct dt_property *prop;
         const __be32 *cells;
-        uint32_t addr_cells, size_cells;
+        uint32_t addr_cells;
         paddr_t gbase, pbase, psize;
         int ret = 0;
         unsigned int i;
@@ -338,7 +338,6 @@ int __init process_shm(struct domain *d, struct kernel_info *kinfo,
          * pbase is optional.
          */
         addr_cells = dt_n_addr_cells(shm_node);
-        size_cells = dt_n_size_cells(shm_node);
         prop = dt_find_property(shm_node, "xen,shared-mem", NULL);
         BUG_ON(!prop);
         cells = (const __be32 *)prop->value;
-- 
2.25.1
Re: [PATCH 3/4] xen/arm: static-shmem: Drop unused size_cells
Posted by Bertrand Marquis 8 months ago
Hi Michal,

> On 3 Mar 2025, at 09:56, Michal Orzel <michal.orzel@amd.com> wrote:
> 
> Value stored in size_cells is never read because we're only interested
> in retrieving gbase address of shmem region for which we only need
> address cells.
> 
> Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com>

Cheers
Bertrand

> ---
> xen/arch/arm/static-shmem.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/xen/arch/arm/static-shmem.c b/xen/arch/arm/static-shmem.c
> index 8f87154c3587..c74fa13d4847 100644
> --- a/xen/arch/arm/static-shmem.c
> +++ b/xen/arch/arm/static-shmem.c
> @@ -302,7 +302,7 @@ int __init process_shm(struct domain *d, struct kernel_info *kinfo,
>         const struct membank *boot_shm_bank;
>         const struct dt_property *prop;
>         const __be32 *cells;
> -        uint32_t addr_cells, size_cells;
> +        uint32_t addr_cells;
>         paddr_t gbase, pbase, psize;
>         int ret = 0;
>         unsigned int i;
> @@ -338,7 +338,6 @@ int __init process_shm(struct domain *d, struct kernel_info *kinfo,
>          * pbase is optional.
>          */
>         addr_cells = dt_n_addr_cells(shm_node);
> -        size_cells = dt_n_size_cells(shm_node);
>         prop = dt_find_property(shm_node, "xen,shared-mem", NULL);
>         BUG_ON(!prop);
>         cells = (const __be32 *)prop->value;
> -- 
> 2.25.1
>