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authorGeert Uytterhoeven <geert@linux-m68k.org>2011-04-25 01:19:05 +0400
committerGeert Uytterhoeven <geert@linux-m68k.org>2011-07-30 23:21:38 +0400
commit3a17bfa4fb37e7f8e06ef31feafec559bd4c6699 (patch)
treedf5d877a6da920b5acbefddd4951c5e197c16343 /arch/m68k/amiga/chipram.c
parentb4f6f45302a9440e26f71dab0b95906bcc3bd13a (diff)
downloadlinux-3a17bfa4fb37e7f8e06ef31feafec559bd4c6699.tar.xz
m68k/amiga: Chip RAM - Always allocate from the start of memory
As of commit 5df1abdbd37af2ae317a1c5b5944173284dc55d6 ('m68k/amiga: Fix "debug=mem"'), "debug=mem" no longer uses amiga_chip_alloc_res(), so we can remove the hack to prefer memory at the safe end. This allows to simplify the code and make amiga_chip_alloc() just call amiga_chip_alloc_res() internally. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/amiga/chipram.c')
-rw-r--r--arch/m68k/amiga/chipram.c35
1 files changed, 15 insertions, 20 deletions
diff --git a/arch/m68k/amiga/chipram.c b/arch/m68k/amiga/chipram.c
index 9005fa07f2e2..e5a8dbc9abaf 100644
--- a/arch/m68k/amiga/chipram.c
+++ b/arch/m68k/amiga/chipram.c
@@ -43,24 +43,20 @@ void __init amiga_chip_init(void)
void *amiga_chip_alloc(unsigned long size, const char *name)
{
struct resource *res;
+ void *p;
- /* round up */
- size = PAGE_ALIGN(size);
-
- pr_debug("amiga_chip_alloc: allocate %lu bytes\n", size);
res = kzalloc(sizeof(struct resource), GFP_KERNEL);
if (!res)
return NULL;
- res->name = name;
- if (allocate_resource(&chipram_res, res, size, 0, UINT_MAX, PAGE_SIZE,
- NULL, NULL) < 0) {
+ res->name = name;
+ p = amiga_chip_alloc_res(size, res);
+ if (!p) {
kfree(res);
return NULL;
}
- chipavail -= size;
- pr_debug("amiga_chip_alloc: returning %pR\n", res);
- return (void *)ZTWO_VADDR(res->start);
+
+ return p;
}
EXPORT_SYMBOL(amiga_chip_alloc);
@@ -72,23 +68,22 @@ EXPORT_SYMBOL(amiga_chip_alloc);
* those drivers must not free that Chip RAM afterwards.
*/
-void * __init amiga_chip_alloc_res(unsigned long size, struct resource *res)
+void *amiga_chip_alloc_res(unsigned long size, struct resource *res)
{
- unsigned long start;
+ int error;
/* round up */
size = PAGE_ALIGN(size);
- /* dmesg into chipmem prefers memory at the safe end */
- start = CHIP_PHYSADDR + chipavail - size;
pr_debug("amiga_chip_alloc_res: allocate %lu bytes\n", size);
- if (allocate_resource(&chipram_res, res, size, start, UINT_MAX,
- PAGE_SIZE, NULL, NULL) < 0) {
- pr_err("amiga_chip_alloc_res: first alloc failed!\n");
- if (allocate_resource(&chipram_res, res, size, 0, UINT_MAX,
- PAGE_SIZE, NULL, NULL) < 0)
- return NULL;
+ error = allocate_resource(&chipram_res, res, size, 0, UINT_MAX,
+ PAGE_SIZE, NULL, NULL);
+ if (error < 0) {
+ pr_err("amiga_chip_alloc_res: allocate_resource() failed %d!\n",
+ error);
+ return NULL;
}
+
chipavail -= size;
pr_debug("amiga_chip_alloc_res: returning %pR\n", res);
return (void *)ZTWO_VADDR(res->start);