Package: linux-2.6
Version: 2.6.32-29
The device table in drivers/s390/block/dasd_eckd.c which indicates which
storage control unit and dasd device type combinations are supported by
the driver is incorrect. The device table indicates that a combination
of 3880 for a control unit and 3390 for a device type is supported. That
is incorrect. A 3880 storage control unit will support a 3380 device
type, but not a 3390 device type. Here is a code excerpt:
static struct ccw_device_id dasd_eckd_ids[] = {
{ CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3390, 0), .driver_info = 0x1},
{ CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3390, 0), .driver_info = 0x2},
{ CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3390, 0), .driver_info = 0x3}, /* bad one! */
{ CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3380, 0), .driver_info = 0x4},
{ CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3380, 0), .driver_info = 0x5},
{ CCW_DEVICE_DEVTYPE (0x9343, 0, 0x9345, 0), .driver_info = 0x6},
{ CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3390, 0), .driver_info = 0x7},
{ CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3380, 0), .driver_info = 0x8},
{ CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3390, 0), .driver_info = 0x9},
{ CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3380, 0), .driver_info = 0xa},
{ /* end of list */ },
};
The bad line should be changed to
{ CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3380, 0), .driver_info = 0x3}, /* corrected */
Other supporting code in the driver may also need to be changed, I don't know.
But I do know that a 3880 storage control unit does not support a 3390 device.
It does support a 3380 device, but that is missing from the table.
This is clearly an issue to be pursued upstream, it is not an issue of
Debian packaging. But I opened this bug report to have a place to
put upstream correspondence related to this bug. I will pursue the matter
with upstream, as I did the last kernel bug that I opened.
This is not a release-critical bug and should not delay the process of
making squeeze the stable release. However, it would be nice if the fix
for this bug eventually made it into a future stable point release.
--
.''`. Stephen Powell
: :' :
`. `'`
`-