On Wed, 2013-06-19 at 18:35 +0000, James Bottomley wrote: > On Wed, 2013-06-19 at 13:42 -0400, Ewan D. Milne wrote: > > From: "Ewan D. Milne" <emilne@xxxxxxxxxx> > > > > Added CONFIG_SCSI_ENHANCED_UA kernel config option to enable changes > > in the SCSI mid-layer which detect and report certain Unit Attention > > conditions reported by devices. These changes are primarily useful > > when storage arrays that can be reconfigured are being used, so the > > config option would normally not be used unless it was needed. > > > > Signed-off-by: Ewan D. Milne <emilne@xxxxxxxxxx> > > --- > > drivers/scsi/Kconfig | 12 ++++++++++++ > > 1 file changed, 12 insertions(+) > > > > diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig > > index e955978..5d1e614 100644 > > --- a/drivers/scsi/Kconfig > > +++ b/drivers/scsi/Kconfig > > @@ -280,6 +280,18 @@ config SCSI_WAIT_SCAN > > # disabling it, whereas people who accidentally switch it off may wonder why > > # their mkinitrd gets into trouble. > > > > +config SCSI_ENHANCED_UA > > + bool "Enhanced SCSI Unit Attention handling" > > + depends on SCSI > > + help > > + Certain SCSI devices report changes via a UNIT ATTENTION code. > > + (For example, the addition or removal of LUNs from a target, or > > + changing the number of logical blocks on a LUN.) This option > > + enables reporting of these changes via udev events, so that the > > + device can be rescanned to find out what has changed. This is > > + primarily useful when storage arrays that can be reconfigured > > + are attached to the system, otherwise you can say N here. > > + > > I don't think we need this. If we're going to do device events, we > should do it unconditionally. The recourse for not wanting them is not > listening for them. That way we don't have two separate config branches > to maintain, one of which will surely bitrot. OK. I added it because I thought this wouldn't be useful for desktop and/or embedded kernels, but I'm happy if it is not needed. -Ewan > > James > -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
