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resource: replace open coded resource_overlaps()

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In iomem_map_sanity_check() a piece of code resembles the content of the
resource_overlaps().  Replace open coded piece with the call to the
existing helper.

Link: https://lore.kernel.org/20260915085353.3518153-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Bradley Morgan <brads@mainlining.org>
Cc: Bjorn Helgaas <helgaas@kernel.org>
This commit is contained in:
Andy Shevchenko 2026-09-15 10:53:53 +02:00 committed by Andrew Morton
parent 4effccfd50
commit 6838e20f66
1 changed files with 6 additions and 8 deletions
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14
kernel/resource.c
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@ -1833,7 +1833,7 @@ __setup("reserve=", reserve_setup);
*/
int iomem_map_sanity_check(resource_size_t addr, unsigned long size)
{
resource_size_t end = addr + size - 1;
struct resource mem = DEFINE_RES_MEM(addr, size);
struct resource *p;
int err = 0;
@ -1843,12 +1843,10 @@ int iomem_map_sanity_check(resource_size_t addr, unsigned long size)
* We can probably skip the resources without
* IORESOURCE_IO attribute?
*/
if (p->start > end)
if (!resource_overlaps(p, &mem))
continue;
if (p->end < addr)
continue;
if (PFN_DOWN(p->start) <= PFN_DOWN(addr) &&
PFN_DOWN(p->end) >= PFN_DOWN(end))
if (PFN_DOWN(p->start) <= PFN_DOWN(mem.start) &&
PFN_DOWN(p->end) >= PFN_DOWN(mem.end))
continue;
/*
* if a resource is "BUSY", it's not a hardware resource
@ -1859,8 +1857,8 @@ int iomem_map_sanity_check(resource_size_t addr, unsigned long size)
if (p->flags & IORESOURCE_BUSY)
continue;
pr_debug("resource sanity check: requesting [mem %pa-%pa], which spans more than %s %pR\n",
&addr, &end, p->name, p);
pr_debug("resource sanity check: requesting %pR, which spans more than %s %pR\n",
&mem, p->name, p);
err = -1;
break;
}