[PATCH] net: ipa: don't configure IDLE_INDICATION on v3.1

[Caleb Connolly <caleb.connolly@linaro.org>]

IPA v3.1 doesn't support the IDLE_INDICATION_CFG register, this was
causing a harmless splat in ipa_idle_indication_cfg(), add a version
check to prevent trying to fetch this register on v3.1

Fixes: 6a244b75cfab ("net: ipa: introduce ipa_reg()")
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
---
This will need to wait for Jami's Tested-by as I don't have any v3.1 hardware.
---
 drivers/net/ipa/ipa_main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c
index 3461ad3029ab..49537fccf6ad 100644
--- a/drivers/net/ipa/ipa_main.c
+++ b/drivers/net/ipa/ipa_main.c
@@ -434,6 +434,9 @@ static void ipa_idle_indication_cfg(struct ipa *ipa,
 	const struct ipa_reg *reg;
 	u32 val;
 
+	if (ipa->version < IPA_VERSION_3_5_1)
+		return;
+
 	reg = ipa_reg(ipa, IDLE_INDICATION_CFG);
 	val = ipa_reg_encode(reg, ENTER_IDLE_DEBOUNCE_THRESH,
 			     enter_idle_debounce_thresh);
-- 
2.38.1