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net: wwan: iosm: fix memory leak in ipc_pcie_read_bios_cfg

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[ Upstream commit d38a648d2d ]

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: 7e98d785ae ("net: iosm: entry point")
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
M Chetan Kumar 2022-11-07 13:04:49 +05:30 • committed by Justin Hammond
parent f7a1f13ab2
commit 75c04d8842
1 changed files with 8 additions and 3 deletions
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11
drivers/net/wwan/iosm/iosm_ipc_pcie.c
View file

@ -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) 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; union acpi_object *object;
acpi_handle handle_acpi; 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); object = acpi_evaluate_dsm(handle_acpi, &wwan_acpi_guid, 0, 3, NULL);
if (!object)
goto default_ret;
if (object && object->integer.value == 3) if (object->integer.value == 3)
return IPC_PCIE_D3L2; sleep_state = IPC_PCIE_D3L2;
kfree(object);
default_ret: default_ret:
return IPC_PCIE_D0L12; return sleep_state;
} }
static int ipc_pcie_probe(struct pci_dev *pci, static int ipc_pcie_probe(struct pci_dev *pci,