diff mbox series

ACPI: acpi_pcc.c: Fix unintentional integer overflow

Message ID 20221013054947.1355884-1-pmanank200502@gmail.com
State New
Headers show
Series ACPI: acpi_pcc.c: Fix unintentional integer overflow | expand

Commit Message

Manank Patel Oct. 13, 2022, 5:49 a.m. UTC 
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(-)
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Patch

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) {