Re: [PATCH v1 4/5] fpga: dfl: add generic support for MSIX interrupts

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On Thu, 8 Sep 2022, Andy Shevchenko wrote:

On Wed, Sep 07, 2022 at 02:37:32PM -0700, matthew.gerlach@xxxxxxxxxxxxxxx wrote:
On Tue, 6 Sep 2022, Andy Shevchenko wrote:
On Tue, Sep 06, 2022 at 12:04:25PM -0700, matthew.gerlach@xxxxxxxxxxxxxxx wrote:

...

+	if (fid != FEATURE_ID_AFU && fid != PORT_FEATURE_ID_ERROR &&
+	    fid != PORT_FEATURE_ID_UINT && fid != FME_FEATURE_ID_GLOBAL_ERR) {
+		v = readq(base);
+		v = FIELD_GET(DFH_VERSION, v);
+
+		if (v == 1) {
+			v =  readq(base + DFHv1_CSR_SIZE_GRP);

I am already lost what v keeps...

Perhaps

		v = readq(base);
		switch (FIELD_GET(DFH_VERSION, v)) {
		case 1:
			...
			break;
		}

How about?
		if (FIELD_GET(DFH_VERSION, readq(base)) == 1) {
			...
		}

This one tends to be expanded in the future, so I would keep it switch case.


I'm okay with using the switch statement, but how about the following?

		switch (FIELD_GET(DFH_VERSION, readq(base))) {
                case 1:
			...
			break;
		}
--
With Best Regards,
Andy Shevchenko






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