linux-kernel - Re: [PATCH v3 6/9] ethernet: stmicro: Simplify PCI devres usage

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Message-ID: <ZsdPNvg-7csIuiqq@smile.fi.intel.com>
Date: Thu, 22 Aug 2024 17:46:14 +0300
From: Andy Shevchenko <andy@...nel.org>
To: Philipp Stanner <pstanner@...hat.com>
Cc: Jonathan Corbet <corbet@....net>, Jens Axboe <axboe@...nel.dk>,
	Wu Hao <hao.wu@...el.com>, Tom Rix <trix@...hat.com>,
	Moritz Fischer <mdf@...nel.org>, Xu Yilun <yilun.xu@...el.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
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	linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
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	linux-arm-kernel@...ts.infradead.org, linux-pci@...r.kernel.org,
	virtualization@...ts.linux.dev
Subject: Re: [PATCH v3 6/9] ethernet: stmicro: Simplify PCI devres usage

On Thu, Aug 22, 2024 at 03:47:38PM +0200, Philipp Stanner wrote:
> stmicro uses PCI devres in the wrong way. Resources requested
> through pcim_* functions don't need to be cleaned up manually in the
> remove() callback or in the error unwind path of a probe() function.
> 
> Moreover, there is an unnecessary loop which only requests and ioremaps
> BAR 0, but iterates over all BARs nevertheless.
> 
> Furthermore, pcim_iomap_regions() and pcim_iomap_table() have been
> deprecated by the PCI subsystem in commit e354bb84a4c1 ("PCI: Deprecate
> pcim_iomap_table(), pcim_iomap_regions_request_all()").
> 
> Replace these functions with pcim_iomap_region().
> 
> Remove the unnecessary manual pcim_* cleanup calls.
> 
> Remove the unnecessary loop over all BARs.

...

> -	/* Get the base address of device */
> +	/* Request the base address BAR of device */

It's a tautology, "BAR" == Base Address ...

-- 
With Best Regards,
Andy Shevchenko