Re: [PATCH 1/4] [SCSI] ips: remove ips_ha members that duplicate struct pci_dev members

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Boaz Harrosh wrote:
On Thu, Oct 25 2007 at 7:09 +0200, Jeff Garzik <jeff@xxxxxxxxxx> wrote:
Andrew Morton wrote:
On Wed, 24 Oct 2007 19:48:26 -0400 (EDT) Jeff Garzik <jeff@xxxxxxxxxx> wrote:

 drivers/scsi/ips.c |  178 ++++++++++++++++++++++++----------------------------
this driver seems a bit of a basket case :(


What's going on here?

		scb->dcdb.cmd_attribute =
		    ips_command_direction[scb->scsi_cmd->cmnd[0]];

        /* Allow a WRITE BUFFER Command to Have no Data */
        /* This is Used by Tape Flash Utilites          */
if ((scb->scsi_cmd->cmnd[0] == WRITE_BUFFER) && (scb->data_len == 0)) scb->dcdb.cmd_attribute = 0;
		if (!(scb->dcdb.cmd_attribute & 0x3))
			scb->dcdb.transfer_length = 0;

		if (scb->data_len >= IPS_MAX_XFER) {

I hope that's just busted indentation and not a missing {} block.
The driver is one of the grotty drivers people are afraid to touch, therefore it bitrots even faster, in a vicious cycle. You don't have to look hard at all to find checkpatch pukeage, very real bugs, and Pythonesque silliness.

Not having hardware I went only for changes that are provable and obvious, really...

	Jeff


From the experience with gdth I would say that a first patch of any
serious cleanup, should be the whitespace and formating cleanup.
And now that we can all read what it says, start changing.

In the gdth case I know of 3 bugs that happen just because of that mess.
And I promise to send that patch for gdth soooon.

I found that lint, even with the command line options recommended by kernel, is to aggressive, and leaves lots of work to be fixed by hand.
(e.g it will touch the comments)

Yeah, I hear you, but don't mistake my kill-warnings work for embarking upon a new clean-this-driver project ;-)

I tend to make incremental improvements all over the tree, "rising tide lifts all boats" and that sort of thing.

If I remained and worked on cleaning every grotty driver I come across while killing warnings or fixing interrupt handlers, I would have no free time at all :)

	Jeff



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