Re: [PATCH] forcedeth: Addition of new device id (resend without pci_ids.h)

From: Ayaz Abdulla <redacted>
Date: Wed, 03 Jun 2009 12:24:37 -0400

David Miller wrote:

quoted

From: Ayaz Abdulla <redacted>
Date: Wed, 03 Jun 2009 12:06:04 -0400

quoted

Add support for new ethernet device in the MCP89 chipset.

Signed-off-by: Ayaz Abdulla <redacted>

Just use the constant directly, please :-)

But there is place in the patch that refers to device id so it makes
more sense to have a macro. i.e

+       if (np->device_id != PCI_DEVICE_ID_NVIDIA_NVENET_40)

other places in the code also refer to device ids for certain
workarounds. i.e.

		if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
		     id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&

And you can add the define when that is necessary.

Otherwise, it's being used in exactly one location, the ID table.
And for that purpose it's superfluous.

You could also change the driver to use a bitmask of HW workaround
cases, that gets set very early in the probe.  And the HW
workarounds are keyed on those bit masks (one test) compared
to the direct ID checks (potentially multiple compares).

It would be both cleaner and more efficient.  And you could still
use the direct constants without any real loss of clarity.