[PATCH v9 08/13] firmware: qcom: qseecom: convert to using the cleanup helpers
From: Bartosz Golaszewski
Date: Mon Mar 25 2024 - 10:00:58 EST
From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Shrink the code by using __free() for allocations that are freed within
the same functions.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
---
.../firmware/qcom/qcom_qseecom_uefisecapp.c | 254 ++++++------------
1 file changed, 84 insertions(+), 170 deletions(-)
diff --git a/drivers/firmware/qcom/qcom_qseecom_uefisecapp.c b/drivers/firmware/qcom/qcom_qseecom_uefisecapp.c
index 32188f098ef3..1f8c5efc2b5a 100644
--- a/drivers/firmware/qcom/qcom_qseecom_uefisecapp.c
+++ b/drivers/firmware/qcom/qcom_qseecom_uefisecapp.c
@@ -7,6 +7,7 @@
* Copyright (C) 2023 Maximilian Luz <luzmaximilian@xxxxxxxxx>
*/
+#include <linux/cleanup.h>
#include <linux/efi.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -272,11 +273,11 @@ static efi_status_t qsee_uefi_get_variable(struct qcuefi_client *qcuefi, const e
const efi_guid_t *guid, u32 *attributes,
unsigned long *data_size, void *data)
{
- struct qsee_req_uefi_get_variable *req_data;
- struct qsee_rsp_uefi_get_variable *rsp_data;
+ struct qsee_req_uefi_get_variable *req_data __free(kfree) = NULL;
+ struct qsee_rsp_uefi_get_variable *rsp_data __free(kfree) = NULL;
unsigned long buffer_size = *data_size;
- efi_status_t efi_status = EFI_SUCCESS;
unsigned long name_length;
+ efi_status_t efi_status;
size_t guid_offs;
size_t name_offs;
size_t req_size;
@@ -305,16 +306,12 @@ static efi_status_t qsee_uefi_get_variable(struct qcuefi_client *qcuefi, const e
);
req_data = kzalloc(req_size, GFP_KERNEL);
- if (!req_data) {
- efi_status = EFI_OUT_OF_RESOURCES;
- goto out;
- }
+ if (!req_data)
+ return EFI_OUT_OF_RESOURCES;
rsp_data = kzalloc(rsp_size, GFP_KERNEL);
- if (!rsp_data) {
- efi_status = EFI_OUT_OF_RESOURCES;
- goto out_free_req;
- }
+ if (!rsp_data)
+ return EFI_OUT_OF_RESOURCES;
req_data->command_id = QSEE_CMD_UEFI_GET_VARIABLE;
req_data->data_size = buffer_size;
@@ -325,28 +322,20 @@ static efi_status_t qsee_uefi_get_variable(struct qcuefi_client *qcuefi, const e
req_data->length = req_size;
status = ucs2_strscpy(((void *)req_data) + req_data->name_offset, name, name_length);
- if (status < 0) {
- efi_status = EFI_INVALID_PARAMETER;
- goto out_free;
- }
+ if (status < 0)
+ return EFI_INVALID_PARAMETER;
memcpy(((void *)req_data) + req_data->guid_offset, guid, req_data->guid_size);
status = qcom_qseecom_app_send(qcuefi->client, req_data, req_size, rsp_data, rsp_size);
- if (status) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (status)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->command_id != QSEE_CMD_UEFI_GET_VARIABLE) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->command_id != QSEE_CMD_UEFI_GET_VARIABLE)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->length < sizeof(*rsp_data)) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->length < sizeof(*rsp_data))
+ return EFI_DEVICE_ERROR;
if (rsp_data->status) {
dev_dbg(qcuefi_dev(qcuefi), "%s: uefisecapp error: 0x%x\n",
@@ -360,18 +349,14 @@ static efi_status_t qsee_uefi_get_variable(struct qcuefi_client *qcuefi, const e
*attributes = rsp_data->attributes;
}
- goto out_free;
+ return efi_status;
}
- if (rsp_data->length > rsp_size) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->length > rsp_size)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->data_offset + rsp_data->data_size > rsp_data->length) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->data_offset + rsp_data->data_size > rsp_data->length)
+ return EFI_DEVICE_ERROR;
/*
* Note: We need to set attributes and data size even if the buffer is
@@ -394,33 +379,23 @@ static efi_status_t qsee_uefi_get_variable(struct qcuefi_client *qcuefi, const e
if (attributes)
*attributes = rsp_data->attributes;
- if (buffer_size == 0 && !data) {
- efi_status = EFI_SUCCESS;
- goto out_free;
- }
+ if (buffer_size == 0 && !data)
+ return EFI_SUCCESS;
- if (buffer_size < rsp_data->data_size) {
- efi_status = EFI_BUFFER_TOO_SMALL;
- goto out_free;
- }
+ if (buffer_size < rsp_data->data_size)
+ return EFI_BUFFER_TOO_SMALL;
memcpy(data, ((void *)rsp_data) + rsp_data->data_offset, rsp_data->data_size);
-out_free:
- kfree(rsp_data);
-out_free_req:
- kfree(req_data);
-out:
- return efi_status;
+ return EFI_SUCCESS;
}
static efi_status_t qsee_uefi_set_variable(struct qcuefi_client *qcuefi, const efi_char16_t *name,
const efi_guid_t *guid, u32 attributes,
unsigned long data_size, const void *data)
{
- struct qsee_req_uefi_set_variable *req_data;
- struct qsee_rsp_uefi_set_variable *rsp_data;
- efi_status_t efi_status = EFI_SUCCESS;
+ struct qsee_req_uefi_set_variable *req_data __free(kfree) = NULL;
+ struct qsee_rsp_uefi_set_variable *rsp_data __free(kfree) = NULL;
unsigned long name_length;
size_t name_offs;
size_t guid_offs;
@@ -451,16 +426,12 @@ static efi_status_t qsee_uefi_set_variable(struct qcuefi_client *qcuefi, const e
);
req_data = kzalloc(req_size, GFP_KERNEL);
- if (!req_data) {
- efi_status = EFI_OUT_OF_RESOURCES;
- goto out;
- }
+ if (!req_data)
+ return EFI_OUT_OF_RESOURCES;
rsp_data = kzalloc(sizeof(*rsp_data), GFP_KERNEL);
- if (!rsp_data) {
- efi_status = EFI_OUT_OF_RESOURCES;
- goto out_free_req;
- }
+ if (!rsp_data)
+ return EFI_OUT_OF_RESOURCES;
req_data->command_id = QSEE_CMD_UEFI_SET_VARIABLE;
req_data->attributes = attributes;
@@ -473,10 +444,8 @@ static efi_status_t qsee_uefi_set_variable(struct qcuefi_client *qcuefi, const e
req_data->length = req_size;
status = ucs2_strscpy(((void *)req_data) + req_data->name_offset, name, name_length);
- if (status < 0) {
- efi_status = EFI_INVALID_PARAMETER;
- goto out_free;
- }
+ if (status < 0)
+ return EFI_INVALID_PARAMETER;
memcpy(((void *)req_data) + req_data->guid_offset, guid, req_data->guid_size);
@@ -485,42 +454,31 @@ static efi_status_t qsee_uefi_set_variable(struct qcuefi_client *qcuefi, const e
status = qcom_qseecom_app_send(qcuefi->client, req_data, req_size, rsp_data,
sizeof(*rsp_data));
- if (status) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (status)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->command_id != QSEE_CMD_UEFI_SET_VARIABLE) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->command_id != QSEE_CMD_UEFI_SET_VARIABLE)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->length != sizeof(*rsp_data)) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->length != sizeof(*rsp_data))
+ return EFI_DEVICE_ERROR;
if (rsp_data->status) {
dev_dbg(qcuefi_dev(qcuefi), "%s: uefisecapp error: 0x%x\n",
__func__, rsp_data->status);
- efi_status = qsee_uefi_status_to_efi(rsp_data->status);
+ return qsee_uefi_status_to_efi(rsp_data->status);
}
-out_free:
- kfree(rsp_data);
-out_free_req:
- kfree(req_data);
-out:
- return efi_status;
+ return EFI_SUCCESS;
}
static efi_status_t qsee_uefi_get_next_variable(struct qcuefi_client *qcuefi,
unsigned long *name_size, efi_char16_t *name,
efi_guid_t *guid)
{
- struct qsee_req_uefi_get_next_variable *req_data;
- struct qsee_rsp_uefi_get_next_variable *rsp_data;
- efi_status_t efi_status = EFI_SUCCESS;
+ struct qsee_req_uefi_get_next_variable *req_data __free(kfree) = NULL;
+ struct qsee_rsp_uefi_get_next_variable *rsp_data __free(kfree) = NULL;
+ efi_status_t efi_status;
size_t guid_offs;
size_t name_offs;
size_t req_size;
@@ -546,16 +504,12 @@ static efi_status_t qsee_uefi_get_next_variable(struct qcuefi_client *qcuefi,
);
req_data = kzalloc(req_size, GFP_KERNEL);
- if (!req_data) {
- efi_status = EFI_OUT_OF_RESOURCES;
- goto out;
- }
+ if (!req_data)
+ return EFI_OUT_OF_RESOURCES;
rsp_data = kzalloc(rsp_size, GFP_KERNEL);
- if (!rsp_data) {
- efi_status = EFI_OUT_OF_RESOURCES;
- goto out_free_req;
- }
+ if (!rsp_data)
+ return EFI_OUT_OF_RESOURCES;
req_data->command_id = QSEE_CMD_UEFI_GET_NEXT_VARIABLE;
req_data->guid_offset = guid_offs;
@@ -567,26 +521,18 @@ static efi_status_t qsee_uefi_get_next_variable(struct qcuefi_client *qcuefi,
memcpy(((void *)req_data) + req_data->guid_offset, guid, req_data->guid_size);
status = ucs2_strscpy(((void *)req_data) + req_data->name_offset, name,
*name_size / sizeof(*name));
- if (status < 0) {
- efi_status = EFI_INVALID_PARAMETER;
- goto out_free;
- }
+ if (status < 0)
+ return EFI_INVALID_PARAMETER;
status = qcom_qseecom_app_send(qcuefi->client, req_data, req_size, rsp_data, rsp_size);
- if (status) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (status)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->command_id != QSEE_CMD_UEFI_GET_NEXT_VARIABLE) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->command_id != QSEE_CMD_UEFI_GET_NEXT_VARIABLE)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->length < sizeof(*rsp_data)) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->length < sizeof(*rsp_data))
+ return EFI_DEVICE_ERROR;
if (rsp_data->status) {
dev_dbg(qcuefi_dev(qcuefi), "%s: uefisecapp error: 0x%x\n",
@@ -601,77 +547,57 @@ static efi_status_t qsee_uefi_get_next_variable(struct qcuefi_client *qcuefi,
if (efi_status == EFI_BUFFER_TOO_SMALL)
*name_size = rsp_data->name_size;
- goto out_free;
+ return efi_status;
}
- if (rsp_data->length > rsp_size) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->length > rsp_size)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->name_offset + rsp_data->name_size > rsp_data->length) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->name_offset + rsp_data->name_size > rsp_data->length)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->guid_offset + rsp_data->guid_size > rsp_data->length) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->guid_offset + rsp_data->guid_size > rsp_data->length)
+ return EFI_DEVICE_ERROR;
if (rsp_data->name_size > *name_size) {
*name_size = rsp_data->name_size;
- efi_status = EFI_BUFFER_TOO_SMALL;
- goto out_free;
+ return EFI_BUFFER_TOO_SMALL;
}
- if (rsp_data->guid_size != sizeof(*guid)) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->guid_size != sizeof(*guid))
+ return EFI_DEVICE_ERROR;
memcpy(guid, ((void *)rsp_data) + rsp_data->guid_offset, rsp_data->guid_size);
status = ucs2_strscpy(name, ((void *)rsp_data) + rsp_data->name_offset,
rsp_data->name_size / sizeof(*name));
*name_size = rsp_data->name_size;
- if (status < 0) {
+ if (status < 0)
/*
* Return EFI_DEVICE_ERROR here because the buffer size should
* have already been validated above, causing this function to
* bail with EFI_BUFFER_TOO_SMALL.
*/
- efi_status = EFI_DEVICE_ERROR;
- }
+ return EFI_DEVICE_ERROR;
-out_free:
- kfree(rsp_data);
-out_free_req:
- kfree(req_data);
-out:
- return efi_status;
+ return EFI_SUCCESS;
}
static efi_status_t qsee_uefi_query_variable_info(struct qcuefi_client *qcuefi, u32 attr,
u64 *storage_space, u64 *remaining_space,
u64 *max_variable_size)
{
- struct qsee_req_uefi_query_variable_info *req_data;
- struct qsee_rsp_uefi_query_variable_info *rsp_data;
- efi_status_t efi_status = EFI_SUCCESS;
+ struct qsee_req_uefi_query_variable_info *req_data __free(kfree) = NULL;
+ struct qsee_rsp_uefi_query_variable_info *rsp_data __free(kfree) = NULL;
int status;
req_data = kzalloc(sizeof(*req_data), GFP_KERNEL);
- if (!req_data) {
- efi_status = EFI_OUT_OF_RESOURCES;
- goto out;
- }
+ if (!req_data)
+ return EFI_OUT_OF_RESOURCES;
rsp_data = kzalloc(sizeof(*rsp_data), GFP_KERNEL);
- if (!rsp_data) {
- efi_status = EFI_OUT_OF_RESOURCES;
- goto out_free_req;
- }
+ if (!rsp_data)
+ return EFI_OUT_OF_RESOURCES;
req_data->command_id = QSEE_CMD_UEFI_QUERY_VARIABLE_INFO;
req_data->attributes = attr;
@@ -679,26 +605,19 @@ static efi_status_t qsee_uefi_query_variable_info(struct qcuefi_client *qcuefi,
status = qcom_qseecom_app_send(qcuefi->client, req_data, sizeof(*req_data), rsp_data,
sizeof(*rsp_data));
- if (status) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (status)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->command_id != QSEE_CMD_UEFI_QUERY_VARIABLE_INFO) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->command_id != QSEE_CMD_UEFI_QUERY_VARIABLE_INFO)
+ return EFI_DEVICE_ERROR;
- if (rsp_data->length != sizeof(*rsp_data)) {
- efi_status = EFI_DEVICE_ERROR;
- goto out_free;
- }
+ if (rsp_data->length != sizeof(*rsp_data))
+ return EFI_DEVICE_ERROR;
if (rsp_data->status) {
dev_dbg(qcuefi_dev(qcuefi), "%s: uefisecapp error: 0x%x\n",
__func__, rsp_data->status);
- efi_status = qsee_uefi_status_to_efi(rsp_data->status);
- goto out_free;
+ return qsee_uefi_status_to_efi(rsp_data->status);
}
if (storage_space)
@@ -710,12 +629,7 @@ static efi_status_t qsee_uefi_query_variable_info(struct qcuefi_client *qcuefi,
if (max_variable_size)
*max_variable_size = rsp_data->max_variable_size;
-out_free:
- kfree(rsp_data);
-out_free_req:
- kfree(req_data);
-out:
- return efi_status;
+ return EFI_SUCCESS;
}
/* -- Global efivar interface. ---------------------------------------------- */
--
2.40.1