Messages in this thread Patch in this message | | | Subject | [patch] SGIIOC4 limit request size | From | Jes Sorensen <> | Date | 01 Feb 2006 03:59:16 -0500 |
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Hi,
This one takes care of a problem with the SGI IOC4 driver where it hits DMA problems if the request grows too large.
Cheers, Jes
Avoid requests larger than the number of SG table entries, to avoid DMA timeouts.
Signed-off-by: Jes Sorensen <jes@sgi.com>
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drivers/ide/pci/sgiioc4.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletion(-)
Index: linux-2.6/drivers/ide/pci/sgiioc4.c =================================================================== --- linux-2.6.orig/drivers/ide/pci/sgiioc4.c +++ linux-2.6/drivers/ide/pci/sgiioc4.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2003 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (C) 2003, 2006 Silicon Graphics, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License @@ -613,6 +613,12 @@ hwif->ide_dma_lostirq = &sgiioc4_ide_dma_lostirq; hwif->ide_dma_timeout = &__ide_dma_timeout; hwif->INB = &sgiioc4_INB; + + /* + * Limit the request size to avoid DMA timeouts when + * requesting more entries than goes in the sg table. + */ + hwif->rqsize = 127; } static int __devinit - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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