isadump: In addr/data-style mode, detect when bit 7 of the address port

is a busy flag, and automatically adjust the range from 256 to 128 bytes
in that case.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@4351 7894878c-1315-0410-8ee3-d5d059ff63e0

CHANGES

@@ -1,6 +1,10 @@
 lm_sensors CHANGES file
 -----------------------
 
+SVN HEAD
+  Program isadump: Detect when address bit 7 is a busy flag
+
+
 2.10.3 (20070319)
   Library: Do not skip i2c adapters with only a class device and no
             physical device. This change is required to survive the

prog/dump/isadump.c

@@ -293,6 +293,10 @@ int main(int argc, char *argv[])
 				res = inb(addrreg + i + j);
 			} else {	
 				outb(i+j, addrreg);
+				if (i+j == 0 && (inb(addrreg) & 0x80)) {
+					/* Bit 7 appears to be a busy flag */
+					range = 128;
+				}
 				res = inb(datareg);
 			}
 			printf("%02x ", res);