linux-kernel - Re: [PATCH 6/8 V2] staging: dgap: remove unneeded dgap

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Date:	Wed, 16 Jul 2014 11:47:36 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	DaeSeok Youn <daeseok.youn@...il.com>
Cc:	devel <devel@...verdev.osuosl.org>,
	Lidza Louina <lidza.louina@...il.com>,
	driverdev-devel@...uxdriverproject.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/8 V2] staging: dgap: remove unneeded dgap_err()

On Wed, Jul 16, 2014 at 06:26:17PM +0900, DaeSeok Youn wrote:
> 2014-07-16 8:50 GMT+09:00 Greg KH <gregkh@...uxfoundation.org>:
> > On Wed, Jul 16, 2014 at 08:21:30AM +0900, DaeSeok Youn wrote:
> >> Hi,
> >>
> >> 2014-07-16 0:29 GMT+09:00 Greg KH <gregkh@...uxfoundation.org>:
> >> > On Tue, Jul 15, 2014 at 06:11:44PM +0900, Daeseok Youn wrote:
> >> >> The dgap_err() is printing a message with pr_err(),
> >> >> so all those are replaced.
> >> >>
> >> >> Use definition "pr_fmt" and then all of "dgap:" in
> >> >> the beginning of print messages are removed.
> >> >>
> >> >> And also removed "out of memory" message because
> >> >> the kernel has own message for that.
> >> >>
> >> >> Signed-off-by: Daeseok Youn <daeseok.youn@...il.com>
> >> >> ---
> >> >> V2: use pr_fmt "dgap:" prefix on print message on dgap.
> >> >>     remove "out of memory" message.
> >> >>
> >> >>     Adds Mark to TO list and CC list for checking send
> >> >>     this email properly to him.
> >> >>
> >> >>  drivers/staging/dgap/dgap.c |  306 +++++++++++++++++++------------------------
> >> >>  1 files changed, 133 insertions(+), 173 deletions(-)
> >> >>
> >> >> diff --git a/drivers/staging/dgap/dgap.c b/drivers/staging/dgap/dgap.c
> >> >> index 06c55cb..9e750fb 100644
> >> >> --- a/drivers/staging/dgap/dgap.c
> >> >> +++ b/drivers/staging/dgap/dgap.c
> >> >> @@ -41,6 +41,8 @@
> >> >>   */
> >> >>  #undef DIGI_CONCENTRATORS_SUPPORTED
> >> >>
> >> >> +#define pr_fmt(fmt) "dgap: " fmt
> >> >> +
> >> >>  #include <linux/kernel.h>
> >> >>  #include <linux/module.h>
> >> >>  #include <linux/pci.h>
> >> >> @@ -153,7 +155,6 @@ static void dgap_firmware_reset_port(struct channel_t *ch);
> >> >>  static int dgap_gettok(char **in);
> >> >>  static char *dgap_getword(char **in);
> >> >>  static int dgap_checknode(struct cnode *p);
> >> >> -static void dgap_err(char *s);
> >> >>
> >> >>  /*
> >> >>   * Function prototypes from dgap_sysfs.h
> >> >> @@ -815,7 +816,7 @@ static struct board_t *dgap_found_board(struct pci_dev *pdev, int id,
> >> >>       if (ret)
> >> >>               goto free_brd;
> >> >>
> >> >> -     pr_info("dgap: board %d: %s (rev %d), irq %ld\n",
> >> >> +     pr_info("board %d: %s (rev %d), irq %ld\n",
> >> >>               boardnum, brd->name, brd->rev, brd->irq);
> >> >
> >> > Almost all of the pr_*() calls in this driver should be converted over
> >> > to use dev_*() calls instead.  And some of them, like this one, should
> >> > be removed entirely (no need for a driver to be "noisy" when a device
> >> > for it is found, it should be quiet if at all possible, unless something
> >> > went wrong.)
> >> >
> >> > So can you do that here instead?  I've applied the earlier patches in
> >> > this series, and stopped here.
> >> OK. I can. pr_*() calls are replaced with dev_*() calls.
> >> And also removes some of print message which are useless like "out
> >> of memory"
> >
> > Yes, please do that, that would be great.
> I have been working to change pr_*() to dev_*(), but dgap_parse() has no
> "struct device" for using dev_*(). If dgap_parse still need for this driver,
> it need to take a parameter for using dev_*(), it may be "pdev" but
> configuration
> file doesn't need to parse in kernel at all, dgap_parse() will be removed.

For now keep the parsing code, and find a device to use, there should be
one somewhere, as it is a driver :)

thanks,

greg k-h
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