[PATCH] sg in lk 2.5.3-pre5

[Douglas Gilbert]

In pre5 the sg driver tries to set up both address
and page+offset in scatterlist entries. Unfortunately
asm-i386/pci.h's pci_map_sg() contains this check:

                if (sg[i].address && sg[i].page)
                        BUG();

which kills that strategy with the sym53c8xx driver.
The sooner we get rid of address in struct scatterlist
the better ... the address,page+offset duality is a mess. 
Strange that Andi Kleen had problems compiling ide-scsi, 
it compiled and worked on my UP and SMP machines (AMD and
dual Celeron respectively).

Sg patch (which has been already sent to Jens) follows.

Doug Gilbert

--- linux/drivers/scsi/sg.c     Thu Jan 24 18:45:01 2002
+++ linux/drivers/scsi/sg.c3523 Thu Jan 24 20:53:28 2002
@@ -19,7 +19,7 @@
  */
 #include <linux/config.h>
 #ifdef CONFIG_PROC_FS
- static char sg_version_str[] = "Version: 3.5.23 (20020103)";
+ static char sg_version_str[] = "Version: 3.5.23 (20020124)";
 #endif
  static int sg_version_num = 30523; /* 2 digits for each component */
 /*
@@ -76,7 +76,7 @@
 #include <linux/version.h>
 #endif /* LINUX_VERSION_CODE */

-#define SG_STILL_HAVE_ADDRESS_IN_SCATTERLIST
+/* #define SG_STILL_HAVE_ADDRESS_IN_SCATTERLIST */

 #define SG_ALLOW_DIO_DEF 0
 #define SG_ALLOW_DIO_CODE      /* compile out be commenting this define */