From 186311fb8b683686fb4eb53c78f4b8fc3b0dc987 Mon Sep 17 00:00:00 2001
From: Jean Delvare <jdelvare@suse.de>
Date: Thu, 19 Jul 2012 16:25:41 +0000
Subject: [PATCH] Don't choke when no SPD EEPROM is found while the eeprom or
 at24 driver is loaded. This can happen, handle the case gracefully.

git-svn-id: http://lm-sensors.org/svn/i2c-tools/trunk@6062 7894878c-1315-0410-8ee3-d5d059ff63e0
---
 CHANGES             |  1 +
 eeprom/decode-dimms | 11 ++++++-----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/CHANGES b/CHANGES
index 524da19..8a45cb6 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5,6 +5,7 @@ SVN HEAD
   README: Clarify licenses
   decode-dimms: Decode module configuration type of DDR2 SDRAM
                 Decode bus width extension of DDR3 SDRAM
+                Don't choke when no EEPROM is found
   i2c-dev.h: Minimize differences with kernel flavor
              Move SMBus helper functions to include/i2c/smbus.h
   i2c-stub-from-dump: Be more tolerant on input dump format
diff --git a/eeprom/decode-dimms b/eeprom/decode-dimms
index 20045a6..a969276 100755
--- a/eeprom/decode-dimms
+++ b/eeprom/decode-dimms
@@ -1725,7 +1725,7 @@ sub sysfs_device_attribute
 
 sub get_dimm_list
 {
-	my (@dirs, $dir, $file, @files);
+	my (@dirs, $dir, $opened, $file, @files);
 
 	if ($use_sysfs) {
 		@dirs = ('/sys/bus/i2c/drivers/eeprom', '/sys/bus/i2c/drivers/at24');
@@ -1735,6 +1735,7 @@ sub get_dimm_list
 
 	foreach $dir (@dirs) {
 		next unless opendir(local *DIR, $dir);
+		$opened++;
 		while (defined($file = readdir(DIR))) {
 			if ($use_sysfs) {
 				# We look for I2C devices like 0-0050 or 2-0051
@@ -1755,12 +1756,12 @@ sub get_dimm_list
 		close(DIR);
 	}
 
-	if (@files) {
-		return sort { $a->{file} cmp $b->{file} } @files;
-	} elsif (! -d '/sys/module/eeprom') {
-		print "No EEPROM found, are you sure the eeprom module is loaded?\n";
+	if (!$opened) {
+		print STDERR "No EEPROM found, try loading the eeprom or at24 module\n";
 		exit;
 	}
+
+	return sort { $a->{file} cmp $b->{file} } @files;
 }
 
 # @dimm is a list of hashes. There's one hash for each EEPROM we found.