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ACPI: CPPC: add __iomem annotation to generic_comm_base pointer

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ppc_comm_addr is a virtual address to the PCC space and it's annotated
with __iomem. Therefore, generic_comm_base which gets assigned the value of
pcc_comm_address should be annotated as well.

This already happens in check_pcc_chan(), but not in send_pcc_cmd(), which
results in the following sparse warnings:

drivers/acpi/cppc_acpi.c:237:18: warning: cast removes address space '__iomem' of expression
drivers/acpi/cppc_acpi.c:299:9: warning: incorrect type in argument 2 (different address spaces)
drivers/acpi/cppc_acpi.c:299:9:    expected void volatile [noderef] __iomem *addr
drivers/acpi/cppc_acpi.c:299:9:    got unsigned short *
drivers/acpi/cppc_acpi.c:302:9: warning: incorrect type in argument 2 (different address spaces)
drivers/acpi/cppc_acpi.c:302:9:    expected void volatile [noderef] __iomem *addr
drivers/acpi/cppc_acpi.c:302:9:    got unsigned short *

Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Ionela Voinescu 2021-01-07 11:17:16 +00:00 committed by Rafael J. Wysocki
parent d8f85cc021
commit 1d9b4abefc
1 changed files with 2 additions and 2 deletions
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4
drivers/acpi/cppc_acpi.c
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@ -233,8 +233,8 @@ static int send_pcc_cmd(int pcc_ss_id, u16 cmd)
{
int ret = -EIO, i;
struct cppc_pcc_data *pcc_ss_data = pcc_data[pcc_ss_id];
struct acpi_pcct_shared_memory *generic_comm_base =
(struct acpi_pcct_shared_memory *)pcc_ss_data->pcc_comm_addr;
struct acpi_pcct_shared_memory __iomem *generic_comm_base =
pcc_ss_data->pcc_comm_addr;
unsigned int time_delta;
/*