Re: [PATCH 3/3] xgifb: checkpatch cleanup, printk() KERN_*

From: Joe Perches
Date: Sat Jan 21 2012 - 11:42:55 EST


On Sat, 2012-01-21 at 02:10 -0800, Sam Hansen wrote:
> Added KERN_ facility levels in XGI_main_26.c and vb_init.c in a few different
> printk() statements.
[]
> @@ -2018,12 +2018,12 @@ static int __devinit xgifb_probe(struct pci_dev *pdev,
> printk(KERN_INFO "XGIfb: MMIO at 0x%lx, mapped to 0x%p, size %ldk\n",
> xgifb_info->mmio_base, xgifb_info->mmio_vbase,
> xgifb_info->mmio_size / 1024);
> - printk("XGIfb: XGIInitNew() ...");
> + printk(KERN_INFO "XGIfb: XGIInitNew() ...");
> pci_set_drvdata(pdev, xgifb_info);
> if (XGIInitNew(pdev))
> - printk("OK\n");
> + printk(KERN_INFO "OK\n");
> else
> - printk("Fail\n");
> + printk(KERN_ERR "Fail\n");

These last two should be KERN_CONT
though the block could be rewritten as

if (XGIInitNew(pdev))
printk(KERN_INFO "XGIfb: XGIInitNew() ... OK\n");
else
printk(KERN_ERR "XGIfb: XGIInitNew() ... Fail\n");

Emitting any dmesg output like "XGIInitNew() ... OK\n"
is almost always low value.

Perhaps just emitting on the error case is better:
if (!XGIInitNew(pdev))
printk(KERN_ERR "XGIfb: XBIInitNew() failed\n");

One other thing. It would be better to add
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
before any #include and convert all the
printks(KERN_<LEVEL> to pr_<level>(
stripping all the leading XGIfb: too.


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