On 6/14/2011 8:06 AM, Chang, Samuel wrote:
Hi Arjan,
I checked with dev_err / dev_warn().
The implementation of dev_err / dev_warn() is printk(KERN_ERR args) and
printk(KERN_WARNING args).
actually that's a way oversimplification. there is a per device field
that tools can enable to hide/enabling messages on a per device basis.
it also provides a standardized format to that tools can filter messages
coming from a device.
The reason I didn't use dev_err / dev_warn() is there is no suitable (or easy to get)
"dev" variable in ar6003 driver.
So, I need to put NULL for this dev variable.
Then dev_err will be printk(KERN_ERR "Null device" ...).
then use pr_debug() and family of APIs
but really you can get to a dev() normally...
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