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SubjectRe: [PATCH 2/2] x86, pci: Increase the number of iommus supported to be MAX_IO_APICS v2

* Andrew Morton <> wrote:

> Also we can tweak the code flow and the message to avoid dorky
> 80-column games:

> + printk_once(KERN_ERR "intel-iommu: exceeded %d IOMMUs\n",

Not to mention the use of pr_err():

pr_err("intel-iommu: exceeded %d IOMMUs\n", IOMMU_UNITS_SUPPORTED);

Plus if we defined a proper driver message prefix at the top of
the driver:

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

We could do:

pr_err("Exceeded max %d IOMMUs\n", IOMMU_UNITS_SUPPORTED);

Note, I added 'max', for clarity.

Plus IOMMU_UNITS_SUPPORTED could be renamed to the much shorter
IOMMU_MAX, without a loss of clarity:

pr_err("Exceeded max %d IOMMUs\n", IOMMU_MAX);

So we made that line vastly shorter, and made the human-readable
message actually longer and more expressive.

80 column wraps are almost always not a sign of lack of screen
real estate, but a symptom of lack of thinking.



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