Re: [PATCH 6/9] staging: vc04_services: Drop vchiq_log_error() in favour of dev_dbg

Laurent Pinchart
2023-11-23T17:28:20Z

On Thu, Nov 23, 2023 at 01:53:42PM +0000, Greg Kroah-Hartman wrote:
> On Thu, Nov 23, 2023 at 03:49:41PM +0200, Laurent Pinchart wrote:
> > On Thu, Nov 23, 2023 at 01:02:45PM +0000, Greg Kroah-Hartman wrote:
> > > On Tue, Nov 07, 2023 at 04:51:53AM -0500, Umang Jain wrote:
> > > > Drop vchiq_log_error() macro which wraps dev_dbg(). Introduce the usage
> > > > of dev_dbg() directly.
> > > >
> > > > Add a new enum vchiq_log_type and log_type() helper to faciliate the
> > > > type of logging in dev_dbg(). This will help to determine the type of
> > > > logging("error", "warning", "debug", "trace") to dynamic debug.
> > > >
> > > > Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
> > > > ---
> > > > .../interface/vchiq_arm/vchiq_arm.c | 54 ++++----
> > > > .../interface/vchiq_arm/vchiq_connected.c | 6 +-
> > > > .../interface/vchiq_arm/vchiq_core.c | 126 ++++++++++--------
> > > > .../interface/vchiq_arm/vchiq_core.h | 23 +++-
> > > > .../interface/vchiq_arm/vchiq_dev.c | 47 ++++---
> > > > 5 files changed, 143 insertions(+), 113 deletions(-)
> > > >
> > > > diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> > > > index 9fb3e240d9de..2cb2a6503058 100644
> > > > --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> > > > +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> > > > @@ -696,8 +696,8 @@ int vchiq_initialise(struct vchiq_instance **instance_out)
> > > >
> > > > instance = kzalloc(sizeof(*instance), GFP_KERNEL);
> > > > if (!instance) {
> > > > - vchiq_log_error(state->dev, VCHIQ_CORE,
> > > > - "%s: error allocating vchiq instance\n", __func__);
> > > > + dev_dbg(state->dev, "%s: %s: %s: error allocating vchiq instance\n",
> > > > + log_cat(VCHIQ_CORE), log_type(ERROR), __func__);
> > >
> > > All dev_dbg() calls have __func__ in them automatically, you never need
> > > to duplicate it again as that's redundant :(
> >
> > Oh ? I didn't know that, and can't find it in the code. I may be missing
> > something though. Are you referring to the +f flag for dynamic debug
> > entries ? It won't work if dynamic debug isn't enabled though, but maybe
> > we don't care about that ?
>
> Yes, the "f" flag is what controls this, and if dynamic debug isn't
> enabled, you don't get any message here and we don't care about it :)

You do if you #define DEBUG, that's one of the three options for
dev_dbg() (dynamic debug and no_printk() being the other two). Maybe
__func__ should be added to the dev_printk() version of dev_dbg() to
have a consistent behaviour.

--
Regards,

Laurent Pinchart