[SCSI]: Add help text for SCSI_ESP_CORE.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index e62d23f..d28c14e 100644 (file)
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -1757,6 +1757,14 @@ config SCSI_ESP_CORE
        tristate "ESP Scsi Driver Core"
        depends on SCSI
        select SCSI_SPI_ATTRS
+       help
+         This is a core driver for NCR53c9x based scsi chipsets,
+         also known as "ESP" for Emulex Scsi Processor or
+         Enhanced Scsi Processor.  This driver does not exist by
+         itself, there are front-end drivers which, when enabled,
+         select and enable this driver.  One example is SCSI_SUNESP.
+         These front-end drivers provide probing, DMA, and register
+         access support for the core driver.
 
 config SCSI_SUNESP
        tristate "Sparc ESP Scsi Driver"