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Date: Mon, 15 Sep 2014 12:24:50 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, "K. Y. Srinivasan" <kys@...rosoft.com>, Hannes Reinecke <hare@...e.de>, Christoph Hellwig <hch@....de> Subject: [PATCH 3.16 051/158] Drivers: scsi: storvsc: Fix a bug in handling VMBUS protocol version 3.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: "K. Y. Srinivasan" <kys@...rosoft.com> commit adb6f9e1a8c6af1037232b59edb11277471537ea upstream. Based on the negotiated VMBUS protocol version, we adjust the size of the storage protocol messages. The two sizes we currently handle are pre-win8 and post-win8. In WS2012 R2, we are negotiating higher VMBUS protocol version than the win8 version. Make adjustments to correctly handle this. Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com> Reviewed-by: Hannes Reinecke <hare@...e.de> Signed-off-by: Christoph Hellwig <hch@....de> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/scsi/storvsc_drv.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -1764,19 +1764,22 @@ static int storvsc_probe(struct hv_devic * set state to properly communicate with the host. */ - if (vmbus_proto_version == VERSION_WIN8) { - sense_buffer_size = POST_WIN7_STORVSC_SENSE_BUFFER_SIZE; - vmscsi_size_delta = 0; - vmstor_current_major = VMSTOR_WIN8_MAJOR; - vmstor_current_minor = VMSTOR_WIN8_MINOR; - } else { + switch (vmbus_proto_version) { + case VERSION_WS2008: + case VERSION_WIN7: sense_buffer_size = PRE_WIN8_STORVSC_SENSE_BUFFER_SIZE; vmscsi_size_delta = sizeof(struct vmscsi_win8_extension); vmstor_current_major = VMSTOR_WIN7_MAJOR; vmstor_current_minor = VMSTOR_WIN7_MINOR; + break; + default: + sense_buffer_size = POST_WIN7_STORVSC_SENSE_BUFFER_SIZE; + vmscsi_size_delta = 0; + vmstor_current_major = VMSTOR_WIN8_MAJOR; + vmstor_current_minor = VMSTOR_WIN8_MINOR; + break; } - if (dev_id->driver_data == SFC_GUID) scsi_driver.can_queue = (STORVSC_MAX_IO_REQUESTS * STORVSC_FC_MAX_TARGETS); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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