Changeset 5371

Timestamp:

10/22/08 18:25:11 (3 years ago)

Author:

khali

Message:

The LM78 detection is relatively weak, and sometimes recent Winbond
chips can be misdetected as an LM78. We have had repeated reports of
this happening. (Backport from Linux 2.6.)

Location:

lm-sensors/trunk

Files:

• CHANGES (modified) (1 diff)
• kernel/chips/lm78.c (modified) (1 diff)

lm-sensors/trunk/CHANGES

@@ -13 +13 @@
   Module i2c-piix4: Minor cleanups (2.6 backport)
   Module i2c-viapro: Add VX800/VX820 support (2.6 backport)
+  Module lm78: Prevent misdetection of Winbond chips
   Module lm90: Don't spam the kernel log (2.6 backport)
   Program pwmconfig: Fix MINSTOP and MINSTART test functions (#2340)

lm-sensors/trunk/kernel/chips/lm78.c

@@ -330 +330 @@
                     && (lm78_read_value(new_client, LM78_REG_I2C_ADDR) !=
                         address)) goto ERROR1;
+                /* Explicitly prevent the misdetection of Winbond chips */
+                i = lm78_read_value(new_client, 0x4f);
+                if (i == 0xa3 || i == 0x5c)
+                        goto ERROR1;
         }