| Message ID | 0a969ecd48910dac4da81581eff45b5e579b2bfc.1577976221.git.amit.kucheria@linaro.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | thermal: tsens: Handle critical interrupts | expand |
On Thu 02 Jan 06:54 PST 2020, Amit Kucheria wrote: > We don't currently call put_device in case of successfully initialising > the device. > > Allow control to fall through so we can use same code for success and > error paths to put_device. > Given the relationship between priv->dev and op I think this wouldn't be a problem in practice, but there's two devm_ioremap_resource() done on op->dev in this function. So you're depending on op->dev to stick around, but with this patch you're no longer expressing that dependency. That said, it looks iffy to do devm_ioremap_resource() on op->dev and then create a regmap on priv->dev using that resource. So I think it would be better to do platform_get_source() on op, and then devm_ioremap_resource() on priv->dev, in which case the regmap backing memory will be related to the same struct device as the regmap and it makes perfect sense to put_device() the op->dev when you're done inspecting it's resources. Regards, Bjorn > Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> > --- > drivers/thermal/qcom/tsens-common.c | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c > index 1cbc5a6e5b4f..e84e94a6f1a7 100644 > --- a/drivers/thermal/qcom/tsens-common.c > +++ b/drivers/thermal/qcom/tsens-common.c > @@ -687,8 +687,6 @@ int __init init_common(struct tsens_priv *priv) > tsens_enable_irq(priv); > tsens_debug_init(op); > > - return 0; > - > err_put_device: > put_device(&op->dev); > return ret; > -- > 2.20.1 >
On Fri, Jan 3, 2020 at 12:59 AM Bjorn Andersson <bjorn.andersson@linaro.org> wrote: > > On Thu 02 Jan 06:54 PST 2020, Amit Kucheria wrote: > > > We don't currently call put_device in case of successfully initialising > > the device. > > > > Allow control to fall through so we can use same code for success and > > error paths to put_device. > > > > Given the relationship between priv->dev and op I think this wouldn't be > a problem in practice, but there's two devm_ioremap_resource() done on > op->dev in this function. So you're depending on op->dev to stick > around, but with this patch you're no longer expressing that dependency. > > That said, it looks iffy to do devm_ioremap_resource() on op->dev and > then create a regmap on priv->dev using that resource. So I think it > would be better to do platform_get_source() on op, and then > devm_ioremap_resource() on priv->dev, in which case the regmap backing > memory will be related to the same struct device as the regmap and it > makes perfect sense to put_device() the op->dev when you're done > inspecting it's resources. > Indeed, thanks for reviewing. Will fix. > > Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> > > --- > > drivers/thermal/qcom/tsens-common.c | 2 -- > > 1 file changed, 2 deletions(-) > > > > diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c > > index 1cbc5a6e5b4f..e84e94a6f1a7 100644 > > --- a/drivers/thermal/qcom/tsens-common.c > > +++ b/drivers/thermal/qcom/tsens-common.c > > @@ -687,8 +687,6 @@ int __init init_common(struct tsens_priv *priv) > > tsens_enable_irq(priv); > > tsens_debug_init(op); > > > > - return 0; > > - > > err_put_device: > > put_device(&op->dev); > > return ret; > > -- > > 2.20.1 > >
diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c index 1cbc5a6e5b4f..e84e94a6f1a7 100644 --- a/drivers/thermal/qcom/tsens-common.c +++ b/drivers/thermal/qcom/tsens-common.c @@ -687,8 +687,6 @@ int __init init_common(struct tsens_priv *priv) tsens_enable_irq(priv); tsens_debug_init(op); - return 0; - err_put_device: put_device(&op->dev); return ret;
We don't currently call put_device in case of successfully initialising the device. Allow control to fall through so we can use same code for success and error paths to put_device. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> --- drivers/thermal/qcom/tsens-common.c | 2 -- 1 file changed, 2 deletions(-)