doc: fix number of failsafe sub-devices

Supporting more than 2 sub-device is a remnant from earlier fail-safe
design, that was never actually published.

Fixes: a46f8d584eb8 ("net/failsafe: add fail-safe PMD")
Cc: stable@dpdk.org
Signed-off-by: Gaetan Rivet <grive@u256.net>

diff --git a/doc/guides/nics/fail_safe.rst b/doc/guides/nics/fail_safe.rst
index 3ce2f8bee35237a29b2bd49241dc674a178b3a52..b4a92f663b17d24417c26beb30572401ecf9b716 100644 (file)
--- a/doc/guides/nics/fail_safe.rst
+++ b/doc/guides/nics/fail_safe.rst
@@ -49,7 +49,7 @@ The Fail-safe PMD can be used like most other DPDK virtual devices, by passing a
 ``--vdev`` parameter to the EAL when starting the application. The device name
 must start with the *net_failsafe* prefix, followed by numbers or letters. This
 name must be unique for each device. Each fail-safe instance must have at least one
-sub-device, up to ``RTE_MAX_ETHPORTS-1``.
+sub-device, and at most two.
 
 A sub-device can be any DPDK device, including possibly another fail-safe device.