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SubjectRe: [PATCH] soc: kunpeng_hccs: fix some sparse warnings about incorrect type
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在 2023/8/16 21:17, Arnd Bergmann 写道:
> On Tue, Aug 15, 2023, at 14:52, Huisong Li wrote:
>> @@ -199,8 +200,8 @@ static int hccs_pcc_cmd_send(struct hccs_dev *hdev, u8 cmd,
>> struct hccs_desc *desc)
>> {
>> struct hccs_mbox_client_info *cl_info = &hdev->cl_info;
>> - struct acpi_pcct_shared_memory *comm_base = cl_info->pcc_comm_addr;
>> - void *comm_space = (void *)(comm_base + 1);
>> + void __iomem *comm_space = (u8 *)cl_info->pcc_comm_addr +
>> + sizeof(struct acpi_pcct_shared_memory);
>> struct hccs_fw_inner_head *fw_inner_head;
>> struct acpi_pcct_shared_memory tmp = {0};
>> u16 comm_space_size;
> The cast still looks wrong, while both comm_space and ->pcc_comm_addr
> are __iomem pointers, casting to a non-__iomem u8 pointer should
> still produce that warning. I'd suggest casting to (u8 __iomem *)
> or (void __iomem *), I assume you still need a cast here to get
> the correct address.
Thanks Arnd.

You are right. So I modify it by dropping (u8 *) here in patch v2.
Please take a look at this again.
If it is ok for you, can you apply this patch to soc/soc.git?

/Huisong

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