Background:
1) dmi_check_system() returns the count of the number of
matches. Zero thus means no matches.
2) A match callback can return nonzero to stop the match
checking.
Bug: The count is incremented after we check for the nonzero return
value, so it does not reflect the actual count. We could say this is
intended, for some dumb reason, except that it means that a match on the
first check returns zero--no matches--if the callback returns nonzero.
Attached patch implements the count before calling the callback and thus
before potentially short-circuiting.
Robert Love
Signed-off-by: Robert Love <[email protected]>
arch/i386/kernel/dmi_scan.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -urN linux-2.6.13/arch/i386/kernel/dmi_scan.c linux/arch/i386/kernel/dmi_scan.c
--- linux-2.6.13/arch/i386/kernel/dmi_scan.c 2005-08-29 14:28:33.000000000 -0400
+++ linux/arch/i386/kernel/dmi_scan.c 2005-08-29 14:35:06.000000000 -0400
@@ -218,9 +218,9 @@
/* No match */
goto fail;
}
+ count++;
if (d->callback && d->callback(d))
break;
- count++;
fail: d++;
}
-
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