Patchwork [net] gianfar: fix compile fail for NET_POLL=y due to struct packing

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Submitter Paul Gortmaker
Date Feb. 24, 2013, 3:38 p.m.
Message ID <1361720311-13267-1-git-send-email-paul.gortmaker@windriver.com>
Download mbox | patch
Permalink /patch/222771/
State Accepted
Delegated to: David Miller
Headers show

Comments

Paul Gortmaker - Feb. 24, 2013, 3:38 p.m.
Commit ee873fda3bec7c668407b837fc5519eb961fcd37 ("gianfar: Pack struct
gfar_priv_grp into three cachelines") moved the irq number and names
off into a separate struct and created accessors for them.  However
it was never tested with NET_POLL enabled, and so some conversions
that were simply overlooked went undetected until now.

Make the netpoll ones also use the gfar_irq() accessors.

Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Claudiu Manoil <claudiu.manoil@freescale.com>
Cc: Jianhua Xie <jianhua.xie@freescale.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---

[compile tested for sbc8548 with NET_POLL=y]

 drivers/net/ethernet/freescale/gianfar.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)
David Miller - Feb. 24, 2013, 5:04 p.m.
From: Paul Gortmaker <paul.gortmaker@windriver.com>
Date: Sun, 24 Feb 2013 10:38:31 -0500

> Commit ee873fda3bec7c668407b837fc5519eb961fcd37 ("gianfar: Pack struct
> gfar_priv_grp into three cachelines") moved the irq number and names
> off into a separate struct and created accessors for them.  However
> it was never tested with NET_POLL enabled, and so some conversions
> that were simply overlooked went undetected until now.
> 
> Make the netpoll ones also use the gfar_irq() accessors.
> 
> Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Claudiu Manoil <claudiu.manoil@freescale.com>
> Cc: Jianhua Xie <jianhua.xie@freescale.com>
> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

Applied, thanks.
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Patch

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 4b5e8a6..d2c5441 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -2906,21 +2906,23 @@  static void gfar_netpoll(struct net_device *dev)
 	/* If the device has multiple interrupts, run tx/rx */
 	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
 		for (i = 0; i < priv->num_grps; i++) {
-			disable_irq(priv->gfargrp[i].interruptTransmit);
-			disable_irq(priv->gfargrp[i].interruptReceive);
-			disable_irq(priv->gfargrp[i].interruptError);
-			gfar_interrupt(priv->gfargrp[i].interruptTransmit,
-				       &priv->gfargrp[i]);
-			enable_irq(priv->gfargrp[i].interruptError);
-			enable_irq(priv->gfargrp[i].interruptReceive);
-			enable_irq(priv->gfargrp[i].interruptTransmit);
+			struct gfar_priv_grp *grp = &priv->gfargrp[i];
+
+			disable_irq(gfar_irq(grp, TX)->irq);
+			disable_irq(gfar_irq(grp, RX)->irq);
+			disable_irq(gfar_irq(grp, ER)->irq);
+			gfar_interrupt(gfar_irq(grp, TX)->irq, grp);
+			enable_irq(gfar_irq(grp, ER)->irq);
+			enable_irq(gfar_irq(grp, RX)->irq);
+			enable_irq(gfar_irq(grp, TX)->irq);
 		}
 	} else {
 		for (i = 0; i < priv->num_grps; i++) {
-			disable_irq(priv->gfargrp[i].interruptTransmit);
-			gfar_interrupt(priv->gfargrp[i].interruptTransmit,
-				       &priv->gfargrp[i]);
-			enable_irq(priv->gfargrp[i].interruptTransmit);
+			struct gfar_priv_grp *grp = &priv->gfargrp[i];
+
+			disable_irq(gfar_irq(grp, TX)->irq);
+			gfar_interrupt(gfar_irq(grp, TX)->irq, grp);
+			enable_irq(gfar_irq(grp, TX)->irq);
 		}
 	}
 }