Messages in this thread Patch in this message | | | From | pmanank200502@gmail ... | Subject | [PATCH] ACPI: acpi_pcc.c: Fix unintentional integer overflow | Date | Thu, 13 Oct 2022 11:19:48 +0530 |
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From: Manank Patel <pmanank200502@gmail.com>
Fixed unintentional u32 overflow by casting it to u64 before multiplication.
Signed-off-by: Manank Patel <pmanank200502@gmail.com> --- drivers/acpi/acpi_pcc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/acpi_pcc.c b/drivers/acpi/acpi_pcc.c index ee4ce5ba1fb2..b929d2e5c622 100644 --- a/drivers/acpi/acpi_pcc.c +++ b/drivers/acpi/acpi_pcc.c @@ -112,7 +112,7 @@ acpi_pcc_address_space_handler(u32 function, acpi_physical_address addr, * processor could be much slower to reply. So add an arbitrary * amount of wait on top of Nominal. */ - usecs_lat = PCC_CMD_WAIT_RETRIES_NUM * data->pcc_chan->latency; + usecs_lat = PCC_CMD_WAIT_RETRIES_NUM * ((u64) data->pcc_chan->latency); ret = wait_for_completion_timeout(&data->done, usecs_to_jiffies(usecs_lat)); if (ret == 0) { -- 2.38.0
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