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[PATCH] uml: locking comments in iomem driver

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Comment some lack of locking in the iomem driver.

Also, a couple of variables are in the wrong place, so they are moved.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2007-02-10 01:44:09 -08:00
committed by Linus Torvalds
parent c6256c6824
commit 94c282d79e
2 changed files with 17 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
arch/um/kernel/mem.c
View File

@@ -367,16 +367,6 @@ struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
return pte; return pte;
} }
struct iomem_region *iomem_regions = NULL;
int iomem_size = 0;
extern int parse_iomem(char *str, int *add) __init;
__uml_setup("iomem=", parse_iomem,
"iomem=<name>,<file>\n"
" Configure <file> as an IO memory region named <name>.\n\n"
);
/* /*
* Overrides for Emacs so that we follow Linus's tabbing style. * Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically * Emacs will notice this stuff at the end of the file and automatically

17
arch/um/kernel/physmem.c
View File

@@ -398,6 +398,23 @@ __uml_setup("mem=", uml_mem_setup,
" Example: mem=64M\n\n" " Example: mem=64M\n\n"
); );
extern int __init parse_iomem(char *str, int *add);
__uml_setup("iomem=", parse_iomem,
"iomem=<name>,<file>\n"
" Configure <file> as an IO memory region named <name>.\n\n"
);
/*
* This list is constructed in parse_iomem and addresses filled in in
* setup_iomem, both of which run during early boot. Afterwards, it's
* unchanged.
*/
struct iomem_region *iomem_regions = NULL;
/* Initialized in parse_iomem */
int iomem_size = 0;
unsigned long find_iomem(char *driver, unsigned long *len_out) unsigned long find_iomem(char *driver, unsigned long *len_out)
{ {
struct iomem_region *region = iomem_regions; struct iomem_region *region = iomem_regions;