From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Tue, 9 Mar 2010 02:09:50 +0000 (+0900)
Subject: [SCSI] mpt2sas: fix the incorrect scsi_dma_map error checking
X-Git-Tag: v2.6.35-rc1~470^2^2~178
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb789d01620e5d36081b22edb6fb71cf55ff043c;p=pandora-kernel.git

[SCSI] mpt2sas: fix the incorrect scsi_dma_map error checking

scsi_dma_map() returns -1 if an error occurred (zero means that the
command has no data). So the following current code can't catch an
error:

sges_left = scsi_dma_map(scmd);
if (!sges_left) {
	sdev_printk(KERN_ERR, scmd->device, "pci_map_sg"
	" failed: request for %d bytes!\n", scsi_bufflen(scmd));
	return -ENOMEM;
}

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: "Desai, Kashyap" <Kashyap.Desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---

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