[Mjpeg-users] dc10 on 875 chipset crashes

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Hello,

I'm using a MSI 875P Neo motherboard (ICH5R) and a Pinnacle DC10 V8+
card.
By modprobing i2c-i801 and saa7110 (sequence don't care)
the system fully crashed.
It happens when the procedure saa7110_detect_client() from saa7110.c is 
working on the i2c-i801 i2c bus address.

For my system the following patch helps:

diff -Nur ori/saa7110.c patched/saa7110.c

--- ori/saa7110.c       2004-04-16 12:13:08.863024384 +0200
+++ patched/saa7110.c   2004-04-16 12:15:38.510274544 +0200
@@ -567,6 +567,14 @@
  static int
  saa7110_attach_adapter (struct i2c_adapter *adapter)
  {
+       if (!strcmp(I2C_NAME(adapter), "SMBus I801 adapter at 0c00"))
+       {
+               dprintk(1,
+                       KERN_INFO
+                       "saa7110c: not probing on: %s\n",
+                       I2C_NAME(adapter));
+               return -EINVAL;
+       }
         dprintk(1,
                 KERN_INFO
                 "saa7110.c: starting probe for adapter %s (0x%x)\n",

(root@hm) 14:02:01 ~ # dmesg
...
Linux video codec intermediate layer: v0.2
saa7110.c: starting probe for adapter ISA main adapter (0x0)
saa7110c: not probing on: SMBus I801 adapter at 0c00
saa7110.c: starting probe for adapter DDC:fb0 #0 (0x10009)
saa7110.c: starting probe for adapter DDC:fb0 #1 (0x10009)
saa7110.c: starting probe for adapter MAVEN:fb0 (0x10009)
saa7110.c: starting probe for adapter saa7134[0] (0x90000)
Zoran MJPEG board driver version 0.9.5
MJPEG[0]: Zoran ZR36067 (rev 2) irq: 18, memory: 0xfeafe000
MJPEG[0]: subsystem vendor=0x1031 id=0x7efe
...

Attention: it only works for the adaptername in the patch.

(root@hm) 14:02:59 ~ # lspci
00:00.0 Host bridge: Intel Corp. 82875P Memory Controller Hub (rev 02)
00:01.0 PCI bridge: Intel Corp. 82875P Processor to AGP Controller (rev 02)
00:03.0 PCI bridge: Intel Corp. 82875P Processor to PCI to CSA Bridge 
(rev 02)
00:06.0 System peripheral: Intel Corp. 82875P Processor to I/O Memory 
Interface (rev 02)
00:1d.0 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #1 
(rev 02)00:1d.1 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB 
UHCI #2 (rev 02)00:1d.2 USB Controller: Intel Corp. 82801EB/ER 
(ICH5/ICH5R) USB UHCI #3 (rev 02)00:1d.3 USB Controller: Intel Corp. 
82801EB/ER (ICH5/ICH5R) USB UHCI #4 (rev 02)00:1d.7 USB Controller: 
Intel Corp. 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB/ER Hub interface to PCI 
Bridge (rev c2)
00:1f.0 ISA bridge: Intel Corp. 82801EB/ER (ICH5/ICH5R) LPC Bridge (rev 02)
00:1f.1 IDE interface: Intel Corp. 82801EB/ER (ICH5/ICH5R) Ultra ATA 100 
Storage Controller (rev 02)
00:1f.3 SMBus: Intel Corp. 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
00:1f.5 Multimedia audio controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) 
AC'97 Audio Controller (rev 02)
01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G550 AGP 
(rev 01)
02:01.0 Ethernet controller: Intel Corp. 82547EI Gigabit Ethernet 
Controller (LOM)
03:01.0 Multimedia controller: Philips Semiconductors SAA7134 (rev 01)
03:02.0 Multimedia video controller: Zoran Corporation ZR36057PQC Video 
cutting chipset (rev 02)
03:03.0 Serial controller: Timedia Technology Co Ltd PCI2S550 (Dual 
16550 UART) (rev 01)
03:05.0 SCSI storage controller: LSI Logic / Symbios Logic 53c810 (rev 12)
03:09.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host 
Controller (rev 46)
03:0e.0 RAID bus controller: Promise Technology, Inc. PDC20378 (SATA150 
TX) (rev 02)

(root@hm) 14:03:33 ~ # lspci -n
00:00.0 Class 0600: 8086:2578 (rev 02)
00:01.0 Class 0604: 8086:2579 (rev 02)
00:03.0 Class 0604: 8086:257b (rev 02)
00:06.0 Class 0880: 8086:257e (rev 02)
00:1d.0 Class 0c03: 8086:24d2 (rev 02)
00:1d.1 Class 0c03: 8086:24d4 (rev 02)
00:1d.2 Class 0c03: 8086:24d7 (rev 02)
00:1d.3 Class 0c03: 8086:24de (rev 02)
00:1d.7 Class 0c03: 8086:24dd (rev 02)
00:1e.0 Class 0604: 8086:244e (rev c2)
00:1f.0 Class 0601: 8086:24d0 (rev 02)
00:1f.1 Class 0101: 8086:24db (rev 02)
00:1f.3 Class 0c05: 8086:24d3 (rev 02)   <--
00:1f.5 Class 0401: 8086:24d5 (rev 02)
01:00.0 Class 0300: 102b:2527 (rev 01)
02:01.0 Class 0200: 8086:1019
03:01.0 Class 0480: 1131:7134 (rev 01)
03:02.0 Class 0400: 11de:6057 (rev 02)
03:03.0 Class 0700: 1409:7168 (rev 01)
03:05.0 Class 0100: 1000:0001 (rev 12)
03:09.0 Class 0c00: 1106:3044 (rev 46)
03:0e.0 Class 0104: 105a:3373 (rev 02)

(root@hm) 14:05:09 ~ # i2cdetect
Error: No i2c-bus specified!
Syntax: i2cdetect [-f] I2CBUS
   I2CBUS is an integer
   With -f, scans all addresses (NOT RECOMMENDED)
   i2cdetect -l lists installed busses only
   Installed I2C busses:
     i2c-6       unknown         DC10plus[0] 
  Algorithm unavailable
     i2c-5       unknown         saa7134[0] 
  Algorithm unavailable
     i2c-4       unknown         MAVEN:fb0 
  Algorithm unavailable
     i2c-3       unknown         DDC:fb0 #1 
  Algorithm unavailable
     i2c-2       unknown         DDC:fb0 #0 
  Algorithm unavailable
     i2c-1       unknown         SMBus I801 adapter at 0c00 
  Algorithm unavailable
     i2c-0       dummy           ISA main adapter 
  ISA bus algorithm

I don't know enough about i2c programming.
So there might be a better solution for the saa7110_detect_client() routine.

Harald

hm...@gm...




