From: M Chetan Kumar <m.chetan.kumar@xxxxxxxxxxxxxxx>
[ Upstream commit d38a648d2d6cc7bee11c6f533ff9426a00c2a74c ]
ipc_pcie_read_bios_cfg() is using the acpi_evaluate_dsm() to
obtain the wwan power state configuration from BIOS but is
not freeing the acpi_object. The acpi_evaluate_dsm() returned
acpi_object to be freed.
Free the acpi_object after use.
Fixes: 7e98d785ae61 ("net: iosm: entry point")
Signed-off-by: M Chetan Kumar <m.chetan.kumar@xxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wwan/iosm/iosm_ipc_pcie.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wwan/iosm/iosm_ipc_pcie.c b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
index 31f57b986df2..97cb6846c6ae 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_pcie.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
@@ -232,6 +232,7 @@ static void ipc_pcie_config_init(struct iosm_pcie *ipc_pcie)
*/
static enum ipc_pcie_sleep_state ipc_pcie_read_bios_cfg(struct device *dev)
{
+ enum ipc_pcie_sleep_state sleep_state = IPC_PCIE_D0L12;
union acpi_object *object;
acpi_handle handle_acpi;
@@ -242,12 +243,16 @@ static enum ipc_pcie_sleep_state ipc_pcie_read_bios_cfg(struct device *dev)
}
object = acpi_evaluate_dsm(handle_acpi, &wwan_acpi_guid, 0, 3, NULL);
+ if (!object)
+ goto default_ret;
+
+ if (object->integer.value == 3)
+ sleep_state = IPC_PCIE_D3L2;
- if (object && object->integer.value == 3)
- return IPC_PCIE_D3L2;
+ kfree(object);
default_ret:
- return IPC_PCIE_D0L12;
+ return sleep_state;
}
static int ipc_pcie_probe(struct pci_dev *pci,
--
2.35.1
