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ARM: bcm: Use of_address_to_resource()

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Replace open coded parsing of "reg" with of_address_to_resource().

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230319163125.224833-1-robh@kernel.org
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Rob Herring 2023-03-19 11:31:25 -05:00 • committed by Florian Fainelli
parent fe15c26ee2
commit 3c01b05407
1 changed files with 6 additions and 17 deletions
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23
arch/arm/mach-bcm/bcm_kona_smc.c
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@ -31,34 +31,23 @@ static const struct of_device_id bcm_kona_smc_ids[] __initconst = {
int __init bcm_kona_smc_init(void) int __init bcm_kona_smc_init(void)
{ {
struct device_node *node; struct device_node *node;
const __be32 *prop_val; struct resource res;
u64 prop_size = 0; int ret;
unsigned long buffer_size;
u32 buffer_phys;
/* Read buffer addr and size from the device tree node */ /* Read buffer addr and size from the device tree node */
node = of_find_matching_node(NULL, bcm_kona_smc_ids); node = of_find_matching_node(NULL, bcm_kona_smc_ids);
if (!node) if (!node)
return -ENODEV; return -ENODEV;
prop_val = of_get_address(node, 0, &prop_size, NULL); ret = of_address_to_resource(node, 0, &res);
of_node_put(node); of_node_put(node);
if (!prop_val) if (ret)
return -EINVAL; return -EINVAL;
/* We assume space for four 32-bit arguments */ bcm_smc_buffer = ioremap(res.start, resource_size(&res));
if (prop_size < 4 * sizeof(u32) || prop_size > (u64)ULONG_MAX)
return -EINVAL;
buffer_size = (unsigned long)prop_size;
buffer_phys = be32_to_cpup(prop_val);
if (!buffer_phys)
return -EINVAL;
bcm_smc_buffer = ioremap(buffer_phys, buffer_size);
if (!bcm_smc_buffer) if (!bcm_smc_buffer)
return -ENOMEM; return -ENOMEM;
bcm_smc_buffer_phys = buffer_phys; bcm_smc_buffer_phys = res.start;
pr_info("Kona Secure API initialized\n"); pr_info("Kona Secure API initialized\n");