netdev - [PATCH 2/3] net: smc91x: take into account half-word workaround

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Message-Id: <1475485553-18747-2-git-send-email-robert.jarzmik@free.fr>
Date:   Mon,  3 Oct 2016 11:05:52 +0200
From:   Robert Jarzmik <robert.jarzmik@...e.fr>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Nicolas Pitre <nico@...xnic.net>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Robert Jarzmik <robert.jarzmik@...e.fr>
Subject: [PATCH 2/3] net: smc91x: take into account half-word workaround

For device-tree builds, platforms such as mainstone, idp and stargate2
must have their u16 writes all aligned on 32 bit boundaries. This is
already enabled in platform data builds, and this patch adds it to
device-tree builds.

Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>
---
 drivers/net/ethernet/smsc/smc91x.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c
index b1f74e06d98e..b081d5ca88ce 100644
--- a/drivers/net/ethernet/smsc/smc91x.c
+++ b/drivers/net/ethernet/smsc/smc91x.c
@@ -2323,6 +2323,8 @@ static int smc_drv_probe(struct platform_device *pdev)
 		if (!device_property_read_u32(&pdev->dev, "reg-shift",
 					      &val))
 			lp->io_shift = val;
+		lp->half_word_align4 =
+			device_property_read_bool(&pdev->dev, "reg-u16-align4");
 	}
 #endif
 
-- 
2.1.4