mbox series

[0/4] Make QMI message rules const

Message ID 20220912232526.27427-1-quic_jjohnson@quicinc.com (mailing list archive)
Headers show
Series Make QMI message rules const | expand

Message

Jeff Johnson Sept. 12, 2022, 11:25 p.m. UTC
Change ff6d365898d ("soc: qcom: qmi: use const for struct
qmi_elem_info") allows QMI message encoding/decoding rules to be
const. So now update the definitions in the various client to take
advantage of this. Patches for ath10k and ath11k were perviously sent
separately.

This series depends upon:
https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git/commit/?h=for-next&id=ff6d365898d4d31bd557954c7fc53f38977b491c

This is in the for-next banch of:
git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git

Hence this series is also based upon that tree/branch.

Jeff Johnson (4):
  net: ipa: Make QMI message rules const
  remoteproc: sysmon: Make QMI message rules const
  slimbus: qcom-ngd-ctrl: Make QMI message rules const
  soc: qcom: pdr: Make QMI message rules const

 drivers/net/ipa/ipa_qmi_msg.c    | 20 ++++++++++----------
 drivers/net/ipa/ipa_qmi_msg.h    | 20 ++++++++++----------
 drivers/remoteproc/qcom_sysmon.c |  8 ++++----
 drivers/slimbus/qcom-ngd-ctrl.c  |  8 ++++----
 drivers/soc/qcom/pdr_internal.h  | 20 ++++++++++----------
 5 files changed, 38 insertions(+), 38 deletions(-)

Comments

Alex Elder Sept. 13, 2022, 1:58 p.m. UTC | #1
On 9/12/22 6:25 PM, Jeff Johnson wrote:
> Change ff6d365898d ("soc: qcom: qmi: use const for struct
> qmi_elem_info") allows QMI message encoding/decoding rules to be
> const. So now update the definitions in the various client to take
> advantage of this. Patches for ath10k and ath11k were perviously sent
> separately.

I have had this on my "to-do list" for ages.
The commit you mention updates the code to be
explicit about not modifying this data, which
is great.

I scanned over the changes, and I assume that
all you did was make every object having the
qmi_elem_info structure type be defined as
constant.

Why aren't you changing the "ei_array" field in
the qmi_elem_info structure to be const?  Or the
"ei" field of the qmi_msg_handler structure?  And
the qmi_response_type_v01_ei array (and so on)?

I like what you're doing, but can you comment
on what your plans are beyond this series?
Do you intend to make the rest of these fields
const?

Thanks.

					-Alex

> This series depends upon:
> https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git/commit/?h=for-next&id=ff6d365898d4d31bd557954c7fc53f38977b491c
> 
> This is in the for-next banch of:
> git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git
> 
> Hence this series is also based upon that tree/branch.
> 
> Jeff Johnson (4):
>    net: ipa: Make QMI message rules const
>    remoteproc: sysmon: Make QMI message rules const
>    slimbus: qcom-ngd-ctrl: Make QMI message rules const
>    soc: qcom: pdr: Make QMI message rules const
> 
>   drivers/net/ipa/ipa_qmi_msg.c    | 20 ++++++++++----------
>   drivers/net/ipa/ipa_qmi_msg.h    | 20 ++++++++++----------
>   drivers/remoteproc/qcom_sysmon.c |  8 ++++----
>   drivers/slimbus/qcom-ngd-ctrl.c  |  8 ++++----
>   drivers/soc/qcom/pdr_internal.h  | 20 ++++++++++----------
>   5 files changed, 38 insertions(+), 38 deletions(-)
>
Jeff Johnson Sept. 13, 2022, 6:51 p.m. UTC | #2
On 9/13/2022 6:58 AM, Alex Elder wrote:
> On 9/12/22 6:25 PM, Jeff Johnson wrote:
>> Change ff6d365898d ("soc: qcom: qmi: use const for struct
>> qmi_elem_info") allows QMI message encoding/decoding rules to be
>> const. So now update the definitions in the various client to take
>> advantage of this. Patches for ath10k and ath11k were perviously sent
>> separately.
> 
> I have had this on my "to-do list" for ages.
> The commit you mention updates the code to be
> explicit about not modifying this data, which
> is great.
> 
> I scanned over the changes, and I assume that
> all you did was make every object having the
> qmi_elem_info structure type be defined as
> constant.
> 
> Why aren't you changing the "ei_array" field in
> the qmi_elem_info structure to be const?  Or the
> "ei" field of the qmi_msg_handler structure?  And
> the qmi_response_type_v01_ei array (and so on)?
> 
> I like what you're doing, but can you comment
> on what your plans are beyond this series?
> Do you intend to make the rest of these fields
> const?

Hi Alex,
My primary focus is the ath* wireless drivers, and my primary goal was 
to make the tables there const. So this series, along with the two 
out-of-series patches for ath10k and ath11k complete that scope of work.

The lack of the other changes to the QMI data structures is simply due 
to me not looking in depth at the QMI code beyond the registration 
interface.

I'll be happy to revisit this as a separate cleanup.

/jeff
Alex Elder Sept. 13, 2022, 8:21 p.m. UTC | #3
On 9/13/22 1:51 PM, Jeff Johnson wrote:
> On 9/13/2022 6:58 AM, Alex Elder wrote:
>> On 9/12/22 6:25 PM, Jeff Johnson wrote:
>>> Change ff6d365898d ("soc: qcom: qmi: use const for struct
>>> qmi_elem_info") allows QMI message encoding/decoding rules to be
>>> const. So now update the definitions in the various client to take
>>> advantage of this. Patches for ath10k and ath11k were perviously sent
>>> separately.
>>
>> I have had this on my "to-do list" for ages.
>> The commit you mention updates the code to be
>> explicit about not modifying this data, which
>> is great.
>>
>> I scanned over the changes, and I assume that
>> all you did was make every object having the
>> qmi_elem_info structure type be defined as
>> constant.
>>
>> Why aren't you changing the "ei_array" field in
>> the qmi_elem_info structure to be const?  Or the
>> "ei" field of the qmi_msg_handler structure?  And
>> the qmi_response_type_v01_ei array (and so on)?
>>
>> I like what you're doing, but can you comment
>> on what your plans are beyond this series?
>> Do you intend to make the rest of these fields
>> const?
> 
> Hi Alex,
> My primary focus is the ath* wireless drivers, and my primary goal was 
> to make the tables there const. So this series, along with the two 
> out-of-series patches for ath10k and ath11k complete that scope of work.
> 
> The lack of the other changes to the QMI data structures is simply due 
> to me not looking in depth at the QMI code beyond the registration 
> interface.
> 
> I'll be happy to revisit this as a separate cleanup.

Sounds good to me.  Like I said I've wanted to do this
myself, and as long as you've gotten this far I'd like
to see it taken to completion.  Compile-testing is most
likely sufficient to make sure you got it right.

I cherry-picked the one commit, and downloaded the series
and found no new build warnings.  Checkpatch would prefer
you used "ff6d365898d4" rather than "ff6d365898d" for the
commit ID, but that's OK.

Anyway, for the whole series:

Reviewed-by: Alex Elder <elder@linaro.org>


> /jeff
>
Jeff Johnson Sept. 13, 2022, 10:19 p.m. UTC | #4
On 9/13/2022 1:21 PM, Alex Elder wrote:
> I cherry-picked the one commit, and downloaded the series
> and found no new build warnings.  Checkpatch would prefer
> you used "ff6d365898d4" rather than "ff6d365898d" for the
> commit ID, but that's OK.

I'll clean that up in a v2

> 
> Anyway, for the whole series:
> 
> Reviewed-by: Alex Elder <elder@linaro.org>

Thanks!
Jeff Johnson Sept. 15, 2022, 6:47 p.m. UTC | #5
Following up on:
On 9/13/2022 6:58 AM, Alex Elder wrote:
> Why aren't you changing the "ei_array" field in
> the qmi_elem_info structure to be const?  Or the
> "ei" field of the qmi_msg_handler structure?  And
> the qmi_response_type_v01_ei array (and so on)?

All of these suggestions were actually part of the prerequisite patch:
<https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git/commit/?h=for-next&id=ff6d365898d4d31bd557954c7fc53f38977b491c>

So I think all of the comments have been addressed.

Thanks!
/jeff