null_blk: remove explicit 'select FAULT_INJECTION'
Selecting FAULT_INJECTION causes a Kconfig warning when CONFIG_DEBUG_KERNEL
is not set:
warning: (BLK_DEV_NULL_BLK && DRM_I915_SELFTEST) selects FAULT_INJECTION which has unmet direct dependencies (DEBUG_KERNEL)
The other drivers that use FAULT_INJECTION tend to have a separate
Kconfig symbol for turning on that feature, so let's do the same
thing here. This may add a bit more complexity than we like, but
it avoids the warning and is more consistent with the rest of the
kernel.
Fixes: 93b570464cce ("null_blk: add option for managing IO timeouts")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 622d9a2..ad9b687 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -19,7 +19,10 @@
config BLK_DEV_NULL_BLK
tristate "Null test block driver"
select CONFIGFS_FS
- select FAULT_INJECTION
+
+config BLK_DEV_NULL_BLK_FAULT_INJECTION
+ bool "Support fault injection for Null test block driver"
+ depends on BLK_DEV_NULL_BLK && FAULT_INJECTION
config BLK_DEV_FD
tristate "Normal floppy disk support"