From: Christoph Hellwig <hch@lst.de>
To: jejb@steeleye.com
Cc: linux-scsi@vger.kernel.org, axboe@suse.de
Subject: [PATCH] gdth: don't map zero-length requests
Date: Sun, 5 Feb 2006 16:36:23 +0100 [thread overview]
Message-ID: <20060205153623.GA14143@lst.de> (raw)
From: Jenx Axboe <axboe@suse.de>
Don't map zero-length requests in gdth, zome architectures don't like
that in their dma mapping routines.
[ I'm pretty sure Jens posted this before, but for some reason it got
forgotten --hch ]
Index: linux-2.6/drivers/scsi/gdth.c
===================================================================
--- linux-2.6.orig/drivers/scsi/gdth.c 2006-01-16 16:19:38.000000000 +0100
+++ linux-2.6/drivers/scsi/gdth.c 2006-02-05 16:34:12.000000000 +0100
@@ -2816,7 +2816,7 @@
}
#endif
- } else {
+ } else if (scp->request_bufflen) {
scp->SCp.Status = GDTH_MAP_SINGLE;
scp->SCp.Message = (read_write == 1 ?
PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
next reply other threads:[~2006-02-05 15:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-05 15:36 Christoph Hellwig [this message]
2006-02-05 18:43 ` [PATCH] gdth: don't map zero-length requests Jens Axboe
2006-02-05 20:08 ` James Bottomley
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