From b3880c690beb7f3abf50f333bd8f3ea7040aaf89 Mon Sep 17 00:00:00 2001
From: David Hildenbrand <david@redhat.com>
Date: Wed, 24 Feb 2021 12:06:28 -0800
Subject: video: fbdev: acornfb: remove free_unused_pages()
Git-commit: b3880c690beb7f3abf50f333bd8f3ea7040aaf89
Patch-mainline: v5.12-rc1
References: bsc#1129770
Patch series "mm: simplify free_highmem_page() and free_reserved_page()".
Let's simplify and unify free_highmem_page() and free_reserved_page().
This patch (of 2):
This function is never used and it is one of the last remaining user of
__free_reserved_page(). Let's just drop it.
Link: https://lkml.kernel.org/r/20210126182113.19892-1-david@redhat.com
Link: https://lkml.kernel.org/r/20210126182113.19892-2-david@redhat.com
Fixes: ffd29195ed720188 ("drivers/video/acornfb.c: remove dead code")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/video/fbdev/acornfb.c | 34 ----------------------------------
1 file changed, 34 deletions(-)
diff --git a/drivers/video/fbdev/acornfb.c b/drivers/video/fbdev/acornfb.c
index bcc92aecf666..1b72edc01cfb 100644
--- a/drivers/video/fbdev/acornfb.c
+++ b/drivers/video/fbdev/acornfb.c
@@ -921,40 +921,6 @@ static int acornfb_detect_monitortype(void)
return 4;
}
-/*
- * This enables the unused memory to be freed on older Acorn machines.
- * We are freeing memory on behalf of the architecture initialisation
- * code here.
- */
-static inline void
-free_unused_pages(unsigned int virtual_start, unsigned int virtual_end)
-{
- int mb_freed = 0;
-
- /*
- * Align addresses
- */
- virtual_start = PAGE_ALIGN(virtual_start);
- virtual_end = PAGE_ALIGN(virtual_end);
-
- while (virtual_start < virtual_end) {
- struct page *page;
-
- /*
- * Clear page reserved bit,
- * set count to 1, and free
- * the page.
- */
- page = virt_to_page(virtual_start);
- __free_reserved_page(page);
-
- virtual_start += PAGE_SIZE;
- mb_freed += PAGE_SIZE / 1024;
- }
-
- printk("acornfb: freed %dK memory\n", mb_freed);
-}
-
static int acornfb_probe(struct platform_device *dev)
{
unsigned long size;
--
2.30.1