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Commit 979dca38 authored by Randy Dunlap's avatar Randy Dunlap Committed by James Bottomley
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[SCSI] imm: no need for unchecked_isa_dma 



Relax the lowmem bounce buffer requirement for imm so that any
low memory page will do -- they don't need to be below the
ISA 16 MB limit, just need to be mapped in low memory.

Signed-off-by: default avatarRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 818bf493

drivers/scsi/imm.c

+4 −4
Original line number Original line Diff line number Diff line
@@ -1119,6 +1119,10 @@ static int device_check(imm_struct *dev) 
	return -ENODEV;

	return -ENODEV;

}

}





/*

 * imm cannot deal with highmem, so this causes all IO pages for this host

 * to reside in low memory (hence mapped)

 */

static int imm_adjust_queue(struct scsi_device *device)

static int imm_adjust_queue(struct scsi_device *device)

{

{

	blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);

	blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);
@@ -1141,10 +1145,6 @@ static struct scsi_host_template imm_template = { 
	.use_clustering		= ENABLE_CLUSTERING,

	.use_clustering		= ENABLE_CLUSTERING,

	.can_queue		= 1,

	.can_queue		= 1,

	.slave_alloc		= imm_adjust_queue,

	.slave_alloc		= imm_adjust_queue,

	.unchecked_isa_dma	= 1, /* imm cannot deal with highmem, so

				      * this is an easy trick to ensure

				      * all io pages for this host reside

				      * in low memory */

};

};





/***************************************************************************

/***************************************************************************