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sh: Support early clkdev allocations.

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early platform devices and the like may need to set up clock aliases,
which require an allocation at a time well before the slab allocators
are available. The clock framework comes up after bootmem, so using
bootmem as a fallback should be sufficient.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2010-03-08 21:46:37 +09:00
parent 51a5006afc
commit 2e733b3f84
1 changed files with 10 additions and 3 deletions
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13
arch/sh/kernel/clkdev.c
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@ -20,6 +20,9 @@
#include <linux/string.h>
#include <linux/mutex.h>
#include <linux/clk.h>
#include <linux/slab.h>
#include <linux/bootmem.h>
#include <linux/mm.h>
#include <asm/clock.h>
#include <asm/clkdev.h>
@ -103,12 +106,16 @@ struct clk_lookup_alloc {
char con_id[MAX_CON_ID];
};
struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
const char *dev_fmt, ...)
struct clk_lookup * __init_refok
clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
{
struct clk_lookup_alloc *cla;
cla = kzalloc(sizeof(*cla), GFP_KERNEL);
if (!slab_is_available())
cla = alloc_bootmem_low_pages(sizeof(*cla));
else
cla = kzalloc(sizeof(*cla), GFP_KERNEL);
if (!cla)
return NULL;