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authorDave Young <dyoung@redhat.com>2014-08-14 17:15:27 +0800
committerMatt Fleming <matt.fleming@intel.com>2014-10-03 18:40:58 +0100
commit6ccc72b87b83ece31c2a75bbe07f440b0378f7a9 (patch)
tree777aaf2d1e492963dc65bff61c236edb31532650 /arch/x86/platform/efi/efi.c
parentb2e0a54a1296a91b800f316df7bef7d1905e4fd0 (diff)
lib: Add a generic cmdline parse function parse_option_str
There should be a generic function to parse params like a=b,c Adding parse_option_str in lib/cmdline.c which will return true if there's specified option set in the params. Also updated efi=old_map parsing code to use the new function Signed-off-by: Dave Young <dyoung@redhat.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch/x86/platform/efi/efi.c')
-rw-r--r--arch/x86/platform/efi/efi.c22
1 files changed, 2 insertions, 20 deletions
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index c90d3cd2728c..c73a7df5d37f 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -932,26 +932,8 @@ u64 efi_mem_attributes(unsigned long phys_addr)
static int __init parse_efi_cmdline(char *str)
{
- if (*str == '=')
- str++;
-
- while (*str) {
- if (!strncmp(str, "old_map", 7)) {
- set_bit(EFI_OLD_MEMMAP, &efi.flags);
- str += strlen("old_map");
- }
-
- /*
- * Skip any options we don't understand. Presumably
- * they apply to the EFI boot stub.
- */
- while (*str && *str != ',')
- str++;
-
- /* If we hit a delimiter, skip it */
- if (*str == ',')
- str++;
- }
+ if (parse_option_str(str, "old_map"))
+ set_bit(EFI_OLD_MEMMAP, &efi.flags);
return 0;
}