Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0

[Ingo Molnar <mingo@elte.hu>]

* Mark_H_Johnson@raytheon.com <Mark_H_Johnson@raytheon.com> wrote:

> BUG: sleeping function called from invalid context hdparm(3606) at
> kernel/mutex.c
> in_atomic():0 [00000000], irqs_disabled():1
> ... will send stack traceback separately ...
> when setting udma2 mode in hdparm.

i suspect the patch below will fix the hdparm message - but i dont think
it's related to the other problems you have reported. 

	Ingo

--- linux/drivers/ide/ide-iops.c.orig
+++ linux/drivers/ide/ide-iops.c
@@ -783,13 +783,11 @@ int ide_driveid_update (ide_drive_t *dri
 		printk("%s: CHECK for good STATUS\n", drive->name);
 		return 0;
 	}
-	local_irq_save(flags);
-	SELECT_MASK(drive, 0);
 	id = kmalloc(SECTOR_WORDS*4, GFP_ATOMIC);
-	if (!id) {
-		local_irq_restore(flags);
+	if (!id)
 		return 0;
-	}
+	local_irq_save(flags);
+	SELECT_MASK(drive, 0);
 	ata_input_data(drive, id, SECTOR_WORDS);
 	(void) hwif->INB(IDE_STATUS_REG);	/* clear drive IRQ */
 	local_irq_enable();