Messages in this thread Patch in this message | | | Subject | [PATCH v2 09/12] x86: Better comments for get_bios_ebda() | From | Mike Waychison <> | Date | Fri, 11 Mar 2011 17:43:42 -0800 |
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Make the comments a bit clearer for get_bios_ebda so that it actually tells us what it is returning.
Signed-off-by: Mike Waychison <mikew@google.com> --- arch/x86/include/asm/bios_ebda.h | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/bios_ebda.h b/arch/x86/include/asm/bios_ebda.h index 5174cf0..aa6a317 100644 --- a/arch/x86/include/asm/bios_ebda.h +++ b/arch/x86/include/asm/bios_ebda.h @@ -4,11 +4,14 @@ #include <asm/io.h> /* - * there is a real-mode segmented pointer pointing to the - * 4K EBDA area at 0x40E. + * Returns physical address of EBDA. Returns 0 if there is no EBDA. */ static inline unsigned int get_bios_ebda(void) { + /* + * There is a real-mode segmented pointer pointing to the + * 4K EBDA area at 0x40E. + */ unsigned int address = *(unsigned short *)phys_to_virt(0x40E); address <<= 4; return address; /* 0 means none */
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