From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: bzolnier@gmail.com
Cc: linux-ide@vger.kernel.org, jeremy@sgi.com
Subject: Re: [PATCH 1/2] sgiioc4: kill useless address checks
Date: Thu, 16 Oct 2008 13:41:11 +0400 [thread overview]
Message-ID: <48F70C37.3060800@ru.mvista.com> (raw)
In-Reply-To: <200810152329.20095.sshtylyov@ru.mvista.com>
Hello, I wrote:
> The driver performs a number of checks on the virtual/physical addresses which
> would always evaluate as true:
>
Oops, s/true/false/, of course -- except in sgiioc4_read_status()
> - for sgiioc4_init_hwif_ports(), its caller, sgiioc4_ide_setup_pci_device(),
> guarantees that 'ctrl_port' and 'irq_port' parameters are never 0;
>
> - in sgiioc4_read_status(), we always read the IDE status register, so there's
> no need to check the register's address (must be a leftover from the times
> when this function implemented the INB() method);
>
> - in ide_dma_sgiioc4(), 'dma_base' can never be 0 as IOC4_DMA_OFFSET is not 0.
>
> Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
MBR, Sergei
next prev parent reply other threads:[~2008-10-16 9:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-15 19:29 [PATCH 1/2] sgiioc4: kill useless address checks Sergei Shtylyov
2008-10-16 9:41 ` Sergei Shtylyov [this message]
2008-10-16 10:08 ` Sergei Shtylyov
2008-10-16 19:39 ` Bartlomiej Zolnierkiewicz
2008-12-07 8:03 ` Jeremy Higdon
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