netdev - [PATCH] net: sun4i-emac: Claim emac sram

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Sun, 23 Aug 2015 20:31:38 +0200
From:	Hans de Goede <hdegoede@...hat.com>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	"David S. Miller" <davem@...emloft.net>
Cc:	Jelle van der Waa <jelle@...aa.nl>,
	linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org,
	linux-sunxi@...glegroups.com, Hans de Goede <hdegoede@...hat.com>
Subject: [PATCH] net: sun4i-emac: Claim emac sram

Claim the emac sram ourselves, rather then relying on the bootloader
having mapped the sram to the emac controller during boot.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
 drivers/net/ethernet/allwinner/sun4i-emac.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/allwinner/sun4i-emac.c b/drivers/net/ethernet/allwinner/sun4i-emac.c
index bab01c84..48ce83e 100644
--- a/drivers/net/ethernet/allwinner/sun4i-emac.c
+++ b/drivers/net/ethernet/allwinner/sun4i-emac.c
@@ -28,6 +28,7 @@
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/phy.h>
+#include <linux/soc/sunxi/sunxi_sram.h>
 
 #include "sun4i-emac.h"
 
@@ -857,11 +858,17 @@ static int emac_probe(struct platform_device *pdev)
 
 	clk_prepare_enable(db->clk);
 
+	ret = sunxi_sram_claim(&pdev->dev);
+	if (ret) {
+		dev_err(&pdev->dev, "Error couldn't map SRAM to device\n");
+		goto out;
+	}
+
 	db->phy_node = of_parse_phandle(np, "phy", 0);
 	if (!db->phy_node) {
 		dev_err(&pdev->dev, "no associated PHY\n");
 		ret = -ENODEV;
-		goto out;
+		goto out_release_sram;
 	}
 
 	/* Read MAC-address from DT */
@@ -893,7 +900,7 @@ static int emac_probe(struct platform_device *pdev)
 	if (ret) {
 		dev_err(&pdev->dev, "Registering netdev failed!\n");
 		ret = -ENODEV;
-		goto out;
+		goto out_release_sram;
 	}
 
 	dev_info(&pdev->dev, "%s: at %p, IRQ %d MAC: %pM\n",
@@ -901,6 +908,8 @@ static int emac_probe(struct platform_device *pdev)
 
 	return 0;
 
+out_release_sram:
+	sunxi_sram_release(&pdev->dev);
 out:
 	dev_err(db->dev, "not found (%d).\n", ret);
 
-- 
2.4.3

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html