M-Systems Flash Disk Pioneers 91-SR-005-10-7L, DiskOnChip Appendix III Applying a Patch Manually

Using the DiskOnChip with Linux OS

Appendix III: Applying a Patch Manually

There are two ways to integrate the TrueFFS driver into the kernel: manually or with a patch utility.

The TrueFFS driver for kernel versions 2.0.## contains patch files for kernel versions 2.0.29-2.0.35

(/tmp/doc-driver/doc-patch-2.0.##). See paragraph 4.2.1 for detailed information on how to patch your kernel with these patch files.

When using the TrueFFS driver for kernel versions 2.2.##, the kernel needs to be patched manually. For your reference, the driver contains an example patch file (/tmp/doc-driver/doc-patch- example). This appendix explains how to patch the kernel manually.

To patch your kernel manually, go to your local kernel sources:

# cd /usr/src/linux

There are 5 files that you will need to patch:

/usr/src/linux/include/linux/blk.h

/usr/src/linux/include/linux/major.h

/usr/src/linux/drivers/block/Makefile

/usr/src/linux/drivers/block/Config.in

/usr/src/linux/drivers/block/ll_rw_blk.c

Review the example patch file (/tmp/doc-driver/doc-patch-example) provided with the TrueFFS driver (driver.tgz). The file will look something like this.

--- include/linux/major.h Tue Aug 12 23:57:23 1997

+++/tmp/package/usr/src/linux/include/linux/major.h Mon Aug 17 14:05:19 1998

@@ -69,6	+69,8 @@
#define	APBLOCK_MAJOR	60	/* AP1000	Block device */
#define	DDV_MAJOR	61	/* AP1000	DDV	block device */
+#define	IGEL_FLASH_MAJOR 62 /* tom@igel.de				2.6.98 */
+

#define SPECIALIX_NORMAL_MAJOR 75 #define SPECIALIX_CALLOUT_MAJOR 76

Each of the above mentioned files needs to be edited to create the correct patch for your kernel.

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