| Message ID | 20220610104500.28774-1-Sergey.Semin@baikalelectronics.ru |
|---|---|
| State | Accepted |
| Commit | 77006f6edc0e0f58617eb25e53731f78641e820d |
| Headers | show |
| Series | [v2] gpio: dwapb: Don't print error on -EPROBE_DEFER | expand |
On Fri, Jun 10, 2022 at 01:45:00PM +0300, Serge Semin wrote: > Currently if the APB or Debounce clocks aren't yet ready to be requested > the DW GPIO driver will correctly handle that by deferring the probe > procedure, but the error is still printed to the system log. It needlessly > pollutes the log since there was no real error but a request to postpone > the clock request procedure since the clocks subsystem hasn't been fully > initialized yet. Let's fix that by using the dev_err_probe method to print > the APB/clock request error status. It will correctly handle the deferred > probe situation and print the error if it actually happens. > > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> With or without below nit-pick Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> > --- > > Link: https://lore.kernel.org/linux-gpio/20220610075152.10214-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v2: > - Use the dev_err_probe() return value as the return status of the > corresponding method. (@Philipp Zabel) > --- > drivers/gpio/gpio-dwapb.c | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c > index b0f3aca61974..9467d695a33e 100644 > --- a/drivers/gpio/gpio-dwapb.c > +++ b/drivers/gpio/gpio-dwapb.c > @@ -652,10 +652,9 @@ static int dwapb_get_clks(struct dwapb_gpio *gpio) > gpio->clks[1].id = "db"; > err = devm_clk_bulk_get_optional(gpio->dev, DWAPB_NR_CLOCKS, > gpio->clks); > - if (err) { > - dev_err(gpio->dev, "Cannot get APB/Debounce clocks\n"); > - return err; > - } > + if (err) > + return dev_err_probe(gpio->dev, err, > + "Cannot get APB/Debounce clocks\n"); I would leave it on one line, checkpatch wouldn't complain even before 100 characters era. > > err = clk_bulk_prepare_enable(DWAPB_NR_CLOCKS, gpio->clks); > if (err) { > -- > 2.35.1 >
On Fri, Jun 10, 2022 at 12:45 PM Serge Semin <Sergey.Semin@baikalelectronics.ru> wrote: > > Currently if the APB or Debounce clocks aren't yet ready to be requested > the DW GPIO driver will correctly handle that by deferring the probe > procedure, but the error is still printed to the system log. It needlessly > pollutes the log since there was no real error but a request to postpone > the clock request procedure since the clocks subsystem hasn't been fully > initialized yet. Let's fix that by using the dev_err_probe method to print > the APB/clock request error status. It will correctly handle the deferred > probe situation and print the error if it actually happens. > > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> > > --- > > Link: https://lore.kernel.org/linux-gpio/20220610075152.10214-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v2: > - Use the dev_err_probe() return value as the return status of the > corresponding method. (@Philipp Zabel) > --- > drivers/gpio/gpio-dwapb.c | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c > index b0f3aca61974..9467d695a33e 100644 > --- a/drivers/gpio/gpio-dwapb.c > +++ b/drivers/gpio/gpio-dwapb.c > @@ -652,10 +652,9 @@ static int dwapb_get_clks(struct dwapb_gpio *gpio) > gpio->clks[1].id = "db"; > err = devm_clk_bulk_get_optional(gpio->dev, DWAPB_NR_CLOCKS, > gpio->clks); > - if (err) { > - dev_err(gpio->dev, "Cannot get APB/Debounce clocks\n"); > - return err; > - } > + if (err) > + return dev_err_probe(gpio->dev, err, > + "Cannot get APB/Debounce clocks\n"); > > err = clk_bulk_prepare_enable(DWAPB_NR_CLOCKS, gpio->clks); > if (err) { > -- > 2.35.1 > Applied, thanks! Bart
On Fri, Jun 10, 2022 at 02:13:51PM +0300, Andy Shevchenko wrote: > On Fri, Jun 10, 2022 at 01:45:00PM +0300, Serge Semin wrote: > > Currently if the APB or Debounce clocks aren't yet ready to be requested > > the DW GPIO driver will correctly handle that by deferring the probe > > procedure, but the error is still printed to the system log. It needlessly > > pollutes the log since there was no real error but a request to postpone > > the clock request procedure since the clocks subsystem hasn't been fully > > initialized yet. Let's fix that by using the dev_err_probe method to print > > the APB/clock request error status. It will correctly handle the deferred > > probe situation and print the error if it actually happens. > > > > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> > > With or without below nit-pick > Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Thanks. > > > --- > > > > Link: https://lore.kernel.org/linux-gpio/20220610075152.10214-1-Sergey.Semin@baikalelectronics.ru/ > > Changelog v2: > > - Use the dev_err_probe() return value as the return status of the > > corresponding method. (@Philipp Zabel) > > --- > > drivers/gpio/gpio-dwapb.c | 7 +++---- > > 1 file changed, 3 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c > > index b0f3aca61974..9467d695a33e 100644 > > --- a/drivers/gpio/gpio-dwapb.c > > +++ b/drivers/gpio/gpio-dwapb.c > > @@ -652,10 +652,9 @@ static int dwapb_get_clks(struct dwapb_gpio *gpio) > > gpio->clks[1].id = "db"; > > err = devm_clk_bulk_get_optional(gpio->dev, DWAPB_NR_CLOCKS, > > gpio->clks); > > - if (err) { > > - dev_err(gpio->dev, "Cannot get APB/Debounce clocks\n"); > > - return err; > > - } > > + if (err) > > + return dev_err_probe(gpio->dev, err, > > + "Cannot get APB/Debounce clocks\n"); > > I would leave it on one line, checkpatch wouldn't complain even before 100 > characters era. You are right, checkpatch won't complain but the 80-chars limit is still preferred. In this case we can fulfill that requirement without harm to the code readability. -Sergey > > > > > err = clk_bulk_prepare_enable(DWAPB_NR_CLOCKS, gpio->clks); > > if (err) { > > -- > > 2.35.1 > > > > -- > With Best Regards, > Andy Shevchenko > >
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index b0f3aca61974..9467d695a33e 100644 --- a/drivers/gpio/gpio-dwapb.c +++ b/drivers/gpio/gpio-dwapb.c @@ -652,10 +652,9 @@ static int dwapb_get_clks(struct dwapb_gpio *gpio) gpio->clks[1].id = "db"; err = devm_clk_bulk_get_optional(gpio->dev, DWAPB_NR_CLOCKS, gpio->clks); - if (err) { - dev_err(gpio->dev, "Cannot get APB/Debounce clocks\n"); - return err; - } + if (err) + return dev_err_probe(gpio->dev, err, + "Cannot get APB/Debounce clocks\n"); err = clk_bulk_prepare_enable(DWAPB_NR_CLOCKS, gpio->clks); if (err) {
Currently if the APB or Debounce clocks aren't yet ready to be requested the DW GPIO driver will correctly handle that by deferring the probe procedure, but the error is still printed to the system log. It needlessly pollutes the log since there was no real error but a request to postpone the clock request procedure since the clocks subsystem hasn't been fully initialized yet. Let's fix that by using the dev_err_probe method to print the APB/clock request error status. It will correctly handle the deferred probe situation and print the error if it actually happens. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> --- Link: https://lore.kernel.org/linux-gpio/20220610075152.10214-1-Sergey.Semin@baikalelectronics.ru/ Changelog v2: - Use the dev_err_probe() return value as the return status of the corresponding method. (@Philipp Zabel) --- drivers/gpio/gpio-dwapb.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)