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resource: Make resource_alignment() input const resource

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resource_alignment() does not need to change resource so it can be made
const.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260429122617.7324-6-ilpo.jarvinen@linux.intel.com
This commit is contained in:
Ilpo Järvinen 2026-04-29 15:26:11 +03:00 committed by Bjorn Helgaas
parent 854f9522a2
commit 71c6e7808e
2 changed files with 2 additions and 2 deletions
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2
include/linux/ioport.h
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@ -261,7 +261,7 @@ extern int allocate_resource(struct resource *root, struct resource *new,
struct resource *lookup_resource(struct resource *root, resource_size_t start);
int adjust_resource(struct resource *res, resource_size_t start,
resource_size_t size);
resource_size_t resource_alignment(struct resource *res);
resource_size_t resource_alignment(const struct resource *res);
/**
* resource_set_size - Calculate resource end address from size and start

2
kernel/resource.c
View File

@ -1238,7 +1238,7 @@ reserve_region_with_split(struct resource *root, resource_size_t start,
*
* Returns alignment on success, 0 (invalid alignment) on failure.
*/
resource_size_t resource_alignment(struct resource *res)
resource_size_t resource_alignment(const struct resource *res)
{
switch (res->flags & (IORESOURCE_SIZEALIGN | IORESOURCE_STARTALIGN)) {
case IORESOURCE_SIZEALIGN: