intel_pstate: Fix intel_pstate_get()

[deliverable/linux.git] / kernel / memremap.c

diff --git a/kernel/memremap.c b/kernel/memremap.c
index e517a16cb426cc30b0251a43d22c5d2cb01bead9..70ee3775de24ebcf2e80ab2fdad21eaad24dd2fe 100644 (file)
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -150,7 +150,7 @@ void devm_memunmap(struct device *dev, void *addr)
 }
 EXPORT_SYMBOL(devm_memunmap);
 
-pfn_t phys_to_pfn_t(dma_addr_t addr, unsigned long flags)
+pfn_t phys_to_pfn_t(phys_addr_t addr, unsigned long flags)
 {
        return __pfn_to_pfn_t(addr >> PAGE_SHIFT, flags);
 }
@@ -183,7 +183,11 @@ EXPORT_SYMBOL(put_zone_device_page);
 
 static void pgmap_radix_release(struct resource *res)
 {
-       resource_size_t key;
+       resource_size_t key, align_start, align_size, align_end;
+
+       align_start = res->start & ~(SECTION_SIZE - 1);
+       align_size = ALIGN(resource_size(res), SECTION_SIZE);
+       align_end = align_start + align_size - 1;
 
        mutex_lock(&pgmap_lock);
        for (key = res->start; key <= res->end; key += SECTION_SIZE)
@@ -226,12 +230,11 @@ static void devm_memremap_pages_release(struct device *dev, void *data)
                percpu_ref_put(pgmap->ref);
        }
 
-       pgmap_radix_release(res);
-
        /* pages are dead and unused, undo the arch mapping */
        align_start = res->start & ~(SECTION_SIZE - 1);
        align_size = ALIGN(resource_size(res), SECTION_SIZE);
        arch_remove_memory(align_start, align_size);
+       pgmap_radix_release(res);
        dev_WARN_ONCE(dev, pgmap->altmap && pgmap->altmap->alloc,
                        "%s: failed to free all reserved pages\n", __func__);
 }
@@ -267,7 +270,7 @@ void *devm_memremap_pages(struct device *dev, struct resource *res,
 {
        int is_ram = region_intersects(res->start, resource_size(res),
                        "System RAM");
-       resource_size_t key, align_start, align_size;
+       resource_size_t key, align_start, align_size, align_end;
        struct dev_pagemap *pgmap;
        struct page_map *page_map;
        unsigned long pfn;
@@ -309,7 +312,10 @@ void *devm_memremap_pages(struct device *dev, struct resource *res,
 
        mutex_lock(&pgmap_lock);
        error = 0;
-       for (key = res->start; key <= res->end; key += SECTION_SIZE) {
+       align_start = res->start & ~(SECTION_SIZE - 1);
+       align_size = ALIGN(resource_size(res), SECTION_SIZE);
+       align_end = align_start + align_size - 1;
+       for (key = align_start; key <= align_end; key += SECTION_SIZE) {
                struct dev_pagemap *dup;
 
                rcu_read_lock();
@@ -336,8 +342,6 @@ void *devm_memremap_pages(struct device *dev, struct resource *res,
        if (nid < 0)
                nid = numa_mem_id();
 
-       align_start = res->start & ~(SECTION_SIZE - 1);
-       align_size = ALIGN(resource_size(res), SECTION_SIZE);
        error = arch_add_memory(nid, align_start, align_size, true);
        if (error)
                goto err_add_memory;