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SubjectRe: [PATCH v11 5/8] interconnect: qcom: Add sdm845 interconnect provider driver
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Hi Matthias,

Thanks for looking into this.

On 8.12.18 1:30, Matthias Kaehlcke wrote:
> Hi Georgi,
>
> not a full review, only one thing I just stumbled across:
>
> On Fri, Dec 07, 2018 at 05:29:14PM +0200, Georgi Djakov wrote:
>> From: David Dai <daidavid1@codeaurora.org>
>>
>> Introduce Qualcomm SDM845 specific provider driver using the
>> interconnect framework.
>>
>> Signed-off-by: David Dai <daidavid1@codeaurora.org>
>> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
>> ---
>> .../bindings/interconnect/qcom,sdm845.txt | 24 +
>> drivers/interconnect/Kconfig | 5 +
>> drivers/interconnect/Makefile | 1 +
>> drivers/interconnect/qcom/Kconfig | 13 +
>> drivers/interconnect/qcom/Makefile | 5 +
>> drivers/interconnect/qcom/sdm845.c | 836 ++++++++++++++++++
>> .../dt-bindings/interconnect/qcom,sdm845.h | 143 +++
>> 7 files changed, 1027 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,sdm845.txt
>> create mode 100644 drivers/interconnect/qcom/Kconfig
>> create mode 100644 drivers/interconnect/qcom/Makefile
>> create mode 100644 drivers/interconnect/qcom/sdm845.c
>> create mode 100644 include/dt-bindings/interconnect/qcom,sdm845.h
>>
>> ...
>>
>> diff --git a/drivers/interconnect/qcom/sdm845.c b/drivers/interconnect/qcom/sdm845.c
>> new file mode 100644
>> index 000000000000..f594dd6f500f
>> --- /dev/null
>> +++ b/drivers/interconnect/qcom/sdm845.c
>>
>> ...
>>
>> +static int qcom_icc_bcm_init(struct qcom_icc_bcm *bcm, struct device *dev)
>> +{
>> + struct qcom_icc_node *qn;
>> + int ret, i;
>> +
>> + bcm->addr = cmd_db_read_addr(bcm->name);
>> + if (!bcm->addr) {
>> + dev_err(dev, "%s could not find RPMh address\n",
>> + bcm->name);
>> + return -EINVAL;
>> + }
>> +
>> + if (cmd_db_read_aux_data_len(bcm->name) < sizeof(struct bcm_db)) {
>> + dev_err(dev, "%s command db missing or partial aux data\n",
>> + bcm->name);
>> + return -EINVAL;
>> + }
>
> cmd_db_read_aux_data_len() is in the process of being removed, see
> ed3cafa79ea7 ("soc: qcom: cmd-db: Stop memcpy()ing in
> cmd_db_read_aux_data()") in arm-soc/for-next
>
> https://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc.git/commit/?h=for-next&id=ed3cafa79ea756be653d22087c017af95ea78a49

Yes, exactly. I have a fix that lives as a separate patch [8/8] and will squash it here.

BR,
Georgi

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