Ide.c and Flash drives

From: Bao C. Ha (baoha@sensoria.com)
Date: Wed Jan 02 2002 - 13:47:18 EST


Hi Mark,

In the kernel 2.4.17, ide.c makes an assumption that
CompactFlash cards and their brethern don't have a
slave unit. Unfortunately, I have two that can do
master/slave and get caught since they are side by
side: (1) CompactFlash on an IDE/ATA adapter (as
master)and (2) Simple Tech Flash disk (as slave).

I patched the following to get it to work:

--- ide.c.orig Wed Jan 2 10:35:38 2002
+++ ide.c Wed Jan 2 10:39:44 2002
@@ -324,13 +324,14 @@
        struct hd_driveid *id = drive->id;

        if (drive->removable && id != NULL) {
- if (id->config == 0x848a) return 1; /* CompactFlash */
+ /* if (id->config == 0x848a) return 1; */ /* CompactFlash
*/
                if (!strncmp(id->model, "KODAK ATA_FLASH", 15) /* Kodak */
                 || !strncmp(id->model, "Hitachi CV", 10) /* Hitachi
*/
                 || !strncmp(id->model, "SunDisk SDCFB", 13) /* SunDisk
*/
                 || !strncmp(id->model, "HAGIWARA HPC", 12) /* Hagiwara
*/
                 || !strncmp(id->model, "LEXAR ATA_FLASH", 15) /* Lexar */
- || !strncmp(id->model, "ATA_FLASH", 9)) /* Simple
Tech */
+ /* || !strncmp(id->model, "ATA_FLASH", 9)) */ /* Simple
Tech */
+ )
                {
                        return 1; /* yes, it is a flash memory card */
                }

Could the assumption be re-evaluated? Am I going to
get into trouble doing this?

Regards.
Bao

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