From 79e36a9f54aaf4a52eb2d9520953aa3960e99294 Mon Sep 17 00:00:00 2001 From: Elias Oltmanns Date: Wed, 16 Jul 2008 20:33:48 +0200 Subject: IDE: Fix HDIO_DRIVE_RESET handling Currently, the code path executing an HDIO_DRIVE_RESET ioctl is broken in various ways. Most importantly, it is treated as an out of band request in an illegal way which may very likely lead to system lock ups. Use the drive's request queue to avoid this problem (and fix a locking issue for free along the way). Signed-off-by: Elias Oltmanns Cc: "Alan Cox" Cc: "Randy Dunlap" Signed-off-by: Bartlomiej Zolnierkiewicz --- include/linux/ide.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux/ide.h') diff --git a/include/linux/ide.h b/include/linux/ide.h index f9cbe9350cad..021710cc1b1c 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -138,6 +138,12 @@ struct ide_io_ports { #define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */ #define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */ +/* + * Op codes for special requests to be handled by ide_special_rq(). + * Values should be in the range of 0x20 to 0x3f. + */ +#define REQ_DRIVE_RESET 0x20 + /* * Check for an interrupt and acknowledge the interrupt status */ -- cgit v1.2.3