raw: set range for MAX_RAW_DEVS

The Kconfig symbol MAX_RAW_DEVS is meant to be between 1 and 65536. But
those boundaries are not enforced by its Kconfig entry.

Note that MAX_RAW_DEVS is used to set MAX_RAW_MINORS in
drivers/char/raw.c. If one would accidentally set MAX_RAW_DEVS to an
invalid value, that invalid value will actually end up being used in
raw_init().

So add an appropriate range to this Kconfig entry.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index fa3243d71c76d0b9f14dde9066a2bff60a18165c..1386749b48ffd6e2711316a9083e913c560eabb6 100644 (file)
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -499,6 +499,7 @@ config RAW_DRIVER
 config MAX_RAW_DEVS
        int "Maximum number of RAW devices to support (1-65536)"
        depends on RAW_DRIVER
+       range 1 65536
        default "256"
        help
          The maximum number of RAW devices that are supported.