VServer 1.9.2 (patch-2.6.8.1-vs1.9.2.diff)

[linux-2.6.git] / drivers / usb / storage / Kconfig

diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig
index 9e49d54..7e8d121 100644 (file)
--- a/drivers/usb/storage/Kconfig
+++ b/drivers/usb/storage/Kconfig
@@ -23,6 +23,28 @@ config USB_STORAGE_DEBUG
          Say Y here in order to have the USB Mass Storage code generate
          verbose debugging messages.
 
+config USB_STORAGE_RW_DETECT
+       bool "USB Mass Storage Write-Protected Media Detection (EXPERIMENTAL)"
+       depends on USB_STORAGE && EXPERIMENTAL
+       help
+         Say Y here in order to have the USB Mass Storage code indicate to
+         the SCSI layer that using MODE SENSE(6) and MODE SENSE(10) to
+         determine if the media is write-protected is a good thing to do.
+
+         Many devices have historically had trouble with these commands,
+         hence the default 2.6.x behavior has been to suppress their use.
+         2.4.x used these commands with (at best) mixed results, often
+         crashing the firmware of the device.  However, the SCSI layer now
+         issues these commands in a manner more consistent with other
+         "popular" OSes, in an attempt to improve compatibility.
+
+         Saying Y here allows these commands to be sent to a USB device.
+         If you find a device this doesn't work for, switch to N and let
+         us know at usb-storage@lists.one-eyed-alien.net
+
+         If you say N here, the kernel will assume that all disk-like USB
+         devices are write-enabled.
+
 config USB_STORAGE_DATAFAB
        bool "Datafab Compact Flash Reader support (EXPERIMENTAL)"
        depends on USB_STORAGE && EXPERIMENTAL