| Message ID | 20230708072835.3035398-6-quic_jprakash@quicinc.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | iio: adc: Add support for QCOM SPMI PMIC5 Gen3 ADC | expand |
On Sat, 8 Jul 2023 12:58:29 +0530 Jishnu Prakash <quic_jprakash@quicinc.com> wrote: > Now that usage of "ADC7" name has been replaced with usage of "ADC5 > Gen2" name everywhere, remove the "qcom,spmi-adc7" compatible string. > > Signed-off-by: Jishnu Prakash <quic_jprakash@quicinc.com> Nope. Unless all your dts files are distributed with the kernel, dropping this breaks anyone who upgrades the kernel against an older firmware... So even after the rename, you need to keep the deprecated naming around for the binding side of things. Jonathan > --- > drivers/iio/adc/qcom-spmi-adc5.c | 4 ---- > 1 file changed, 4 deletions(-) > > diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c > index 3ac1ee500a67..6cebeaa69a75 100644 > --- a/drivers/iio/adc/qcom-spmi-adc5.c > +++ b/drivers/iio/adc/qcom-spmi-adc5.c > @@ -807,10 +807,6 @@ static const struct of_device_id adc5_match_table[] = { > .compatible = "qcom,spmi-adc5", > .data = &adc5_data_pmic, > }, > - { > - .compatible = "qcom,spmi-adc7", > - .data = &adc5_gen2_data_pmic, > - }, > { > .compatible = "qcom,spmi-adc5-gen2", > .data = &adc5_gen2_data_pmic,
On 08/07/2023 09:28, Jishnu Prakash wrote: > Now that usage of "ADC7" name has been replaced with usage of "ADC5 > Gen2" name everywhere, remove the "qcom,spmi-adc7" compatible string. > > Signed-off-by: Jishnu Prakash <quic_jprakash@quicinc.com> > --- > drivers/iio/adc/qcom-spmi-adc5.c | 4 ---- Your patchset is not bisectable. Neither this patch nor cover letter marked this. This is not correct and will lead to broken kernels. Even if not considering bisectability, this basically breaks the ABI without any explanation and rationale. Breaking ABI just because you want to rename something, is not the way to go, so NAK. Sorry. Best regards, Krzysztof
Hi Jonathan, On 7/8/2023 8:30 PM, Jonathan Cameron wrote: > On Sat, 8 Jul 2023 12:58:29 +0530 > Jishnu Prakash <quic_jprakash@quicinc.com> wrote: > >> Now that usage of "ADC7" name has been replaced with usage of "ADC5 >> Gen2" name everywhere, remove the "qcom,spmi-adc7" compatible string. >> >> Signed-off-by: Jishnu Prakash <quic_jprakash@quicinc.com> > Nope. Unless all your dts files are distributed with the kernel, dropping > this breaks anyone who upgrades the kernel against an older firmware... > > So even after the rename, you need to keep the deprecated naming around for > the binding side of things. > > Jonathan > >> --- Yes, I'll drop this patch, will just mark the older name as deprecated. Thanks, Jishnu
Hi Krzysztof, On 7/9/2023 11:08 PM, Krzysztof Kozlowski wrote: > On 08/07/2023 09:28, Jishnu Prakash wrote: >> Now that usage of "ADC7" name has been replaced with usage of "ADC5 >> Gen2" name everywhere, remove the "qcom,spmi-adc7" compatible string. >> >> Signed-off-by: Jishnu Prakash <quic_jprakash@quicinc.com> >> --- >> drivers/iio/adc/qcom-spmi-adc5.c | 4 ---- > Your patchset is not bisectable. Neither this patch nor cover letter > marked this. This is not correct and will lead to broken kernels. > > Even if not considering bisectability, this basically breaks the ABI > without any explanation and rationale. > > Breaking ABI just because you want to rename something, is not the way > to go, so NAK. Sorry. > > Best regards, > Krzysztof I'll drop this patch and just mark the older name as deprecated. For concerns on bisectability, I have asked some questions in my other replies for this patch series, I'll structure my next patchsets according to the replies I get. Thanks, Jishnu >
diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c index 3ac1ee500a67..6cebeaa69a75 100644 --- a/drivers/iio/adc/qcom-spmi-adc5.c +++ b/drivers/iio/adc/qcom-spmi-adc5.c @@ -807,10 +807,6 @@ static const struct of_device_id adc5_match_table[] = { .compatible = "qcom,spmi-adc5", .data = &adc5_data_pmic, }, - { - .compatible = "qcom,spmi-adc7", - .data = &adc5_gen2_data_pmic, - }, { .compatible = "qcom,spmi-adc5-gen2", .data = &adc5_gen2_data_pmic,
Now that usage of "ADC7" name has been replaced with usage of "ADC5 Gen2" name everywhere, remove the "qcom,spmi-adc7" compatible string. Signed-off-by: Jishnu Prakash <quic_jprakash@quicinc.com> --- drivers/iio/adc/qcom-spmi-adc5.c | 4 ---- 1 file changed, 4 deletions(-)