netdev - RE: [PATCH] vmxnet3: remove set_flag

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Date:	Sat, 16 Oct 2010 08:57:37 -0700
From:	Shreyas Bhatewara <sbhatewara@...are.com>
To:	Harvey Harrison <harvey.harrison@...il.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"shemminger@...tta.com" <shemminger@...tta.com>
Subject: RE: [PATCH] vmxnet3: remove set_flag_le{16,64} functions

________________________________________
From: Harvey Harrison [harvey.harrison@...il.com]
Sent: Saturday, October 16, 2010 12:33 AM
To: Shreyas Bhatewara
Cc: netdev@...r.kernel.org; shemminger@...tta.com
Subject: [PATCH] vmxnet3: remove set_flag_le{16,64} functions

Opencode the flag setting in the few places it was being done.

Signed-off-by: Harvey Harrison harvey.harrison@...il.com
---
@@ -1617,8 +1599,7 @@ vmxnet3_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
                                               VMXNET3_CMD_UPDATE_VLAN_FILTERS);

                        /* update FEATURES to device */
-                       reset_flag_le64(&devRead->misc.uptFeatures,
-                                       UPT1_F_RXVLAN);
+                       devRead->misc.uptFeatures |= cpu_to_le64(UPT1_F_RXVLAN);
                        VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
                                               VMXNET3_CMD_UPDATE_FEATURE);
                }


This hunk is wrong, UPT1_F_RXVLAN should be reset here.

I fail to understand why set/reset functions were not good enough and why this opencoding is required. I agree with your earlier suggestion about replacing two conversions with *data |= cpu_to_le16(flag); though.


Regards.
Shreyas--
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