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Message-Id: <20181108215055.028517964@linuxfoundation.org>
Date:   Thu,  8 Nov 2018 13:49:34 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jongsung Kim <neidhard.kim@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 3.18 003/144] stmmac: fix valid numbers of unicast filter entries

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jongsung Kim <neidhard.kim@....com>

[ Upstream commit edf2ef7242805e53ec2e0841db26e06d8bc7da70 ]

Synopsys DWC Ethernet MAC can be configured to have 1..32, 64, or
128 unicast filter entries. (Table 7-8 MAC Address Registers from
databook) Fix dwmac1000_validate_ucast_entries() to accept values
between 1 and 32 in addition.

Signed-off-by: Jongsung Kim <neidhard.kim@....com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -85,7 +85,7 @@ static int dwmac1000_validate_mcast_bins
 
 /* This function validates the number of Unicast address entries supported
  * by a particular Synopsys 10/100/1000 controller. The Synopsys controller
- * supports 1, 32, 64, or 128 Unicast filter entries for it's Unicast filter
+ * supports 1..32, 64, or 128 Unicast filter entries for it's Unicast filter
  * logic. This function validates a valid, supported configuration is
  * selected, and defaults to 1 Unicast address if an unsupported
  * configuration is selected.
@@ -95,8 +95,7 @@ static int dwmac1000_validate_ucast_entr
 	int x = ucast_entries;
 
 	switch (x) {
-	case 1:
-	case 32:
+	case 1 ... 32:
 	case 64:
 	case 128:
 		break;


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