linux-kernel - [RFC PATCH 1/3] libahci: save port map for forced port map

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Message-Id: <1459257075-21393-2-git-send-email-srinivas.kandagatla@linaro.org>
Date:	Tue, 29 Mar 2016 14:11:13 +0100
From:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:	Tejun Heo <tj@...nel.org>, linux-ide@...r.kernel.org
Cc:	Rob Herring <robh+dt@...nel.org>,
	Andy Gross <andy.gross@...aro.org>,
	Hans de Goede <hdegoede@...hat.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, jmaggard10@...il.com,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [RFC PATCH 1/3] libahci: save port map for forced port map

In usecases where force_port_map is used saved_port_map is never set,
resulting in not programming the PORTS_IMPL register as part of intial
config. This patch fixes this by setting it to port_map even in case
where force_port_map is used, making it more inline with other parts of
the code.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 drivers/ata/libahci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 3982054..a5d7c1c 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -507,6 +507,7 @@ void ahci_save_initial_config(struct device *dev, struct ahci_host_priv *hpriv)
 		dev_info(dev, "forcing port_map 0x%x -> 0x%x\n",
 			 port_map, hpriv->force_port_map);
 		port_map = hpriv->force_port_map;
+		hpriv->saved_port_map = port_map;
 	}
 
 	if (hpriv->mask_port_map) {
-- 
2.5.0