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[SCSI] ibmvscsi: Fix host config length field overflow

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The length field in the host config packet is only 16-bit long, so
passing it 0x10000 (64K which is our standard PAGE_SIZE) doesn't
work and result in an empty config from the server.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: <stable@vger.kernel.org>
Acked-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Benjamin Herrenschmidt 2012-07-30 11:33:05 +10:00 committed by James Bottomley
parent 9965c2f19b
commit 225c56960f
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/ibmvscsi/ibmvscsi.c
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@ -1851,6 +1851,9 @@ static int ibmvscsi_do_host_config(struct ibmvscsi_host_data *hostdata,
host_config = &evt_struct->iu.mad.host_config;
/* The transport length field is only 16-bit */
length = min(0xffff, length);
/* Set up a lun reset SRP command */
memset(host_config, 0x00, sizeof(*host_config));
host_config->common.type = VIOSRP_HOST_CONFIG_TYPE;