Thread (23 messages) 23 messages, 4 authors, 2018-11-01

RE: [RFC PATCH 3/4] igb: add support for extended PHC gettime

From: "Keller, Jacob E" <jacob.e.keller@intel.com>
Date: 2018-11-01 01:55:28
Also in: intel-wired-lan

-----Original Message-----
From: Miroslav Lichvar [mailto:mlichvar@redhat.com]
Sent: Wednesday, October 31, 2018 2:40 AM
To: Richard Cochran <richardcochran@gmail.com>
Cc: netdev@vger.kernel.org; intel-wired-lan@lists.osuosl.org; Keller, Jacob E
[off-list ref]
Subject: Re: [RFC PATCH 3/4] igb: add support for extended PHC gettime

On Tue, Oct 30, 2018 at 07:29:16PM -0700, Richard Cochran wrote:
quoted
On Fri, Oct 26, 2018 at 06:27:41PM +0200, Miroslav Lichvar wrote:
quoted
+static int igb_ptp_gettimex(struct ptp_clock_info *ptp,
+			    struct ptp_system_timestamp *sts)
+{
+	struct igb_adapter *igb = container_of(ptp, struct igb_adapter,
+					       ptp_caps);
+	struct e1000_hw *hw = &igb->hw;
+	unsigned long flags;
+	u32 lo, hi;
+	u64 ns;
+
+	spin_lock_irqsave(&igb->tmreg_lock, flags);
+
+	/* 82576 doesn't have SYSTIMR */
+	if (igb->hw.mac.type == e1000_82576) {
Instead of if/then/else, can't you follow the pattern of providing
different function flavors ...
I can. I was just trying to minimize the amount of triplicated code.
In the next version I'll add a patch to deprecate the old gettime
functions, as Jacob suggested, and replace them with the extended
versions, so the amount of code will not change that much.
Excellent.

-Jake
Thanks,

--
Miroslav Lichvar
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