[PATCH 15/15] media: atomisp: get rid of a string_support.h abstraction layer
From: Mauro Carvalho Chehab
Date: Wed Jun 03 2020 - 03:01:35 EST
Some parts of the driver have their own implementation of
memcpy() & friends. Replace all of them by strscpy().
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
.../pci/hive_isp_css_include/string_support.h | 165 ------------------
.../ctc/ctc_1.0/ia_css_ctc_table.host.c | 3 +-
.../kernels/gc/gc_1.0/ia_css_gc_table.host.c | 3 +-
.../kernels/gc/gc_2/ia_css_gc2_table.host.c | 3 +-
.../xnr/xnr_1.0/ia_css_xnr_table.host.c | 3 +-
.../pci/runtime/debug/src/ia_css_debug.c | 45 +++--
.../pci/runtime/isys/src/virtual_isys.c | 29 +--
.../media/atomisp/pci/sh_css_firmware.c | 2 +-
8 files changed, 38 insertions(+), 215 deletions(-)
delete mode 100644 drivers/staging/media/atomisp/pci/hive_isp_css_include/string_support.h
diff --git a/drivers/staging/media/atomisp/pci/hive_isp_css_include/string_support.h b/drivers/staging/media/atomisp/pci/hive_isp_css_include/string_support.h
deleted file mode 100644
index 7805b40a1855..000000000000
--- a/drivers/staging/media/atomisp/pci/hive_isp_css_include/string_support.h
+++ /dev/null
@@ -1,165 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Support for Intel Camera Imaging ISP subsystem.
- * Copyright (c) 2015, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- */
-
-#ifndef __STRING_SUPPORT_H_INCLUDED__
-#define __STRING_SUPPORT_H_INCLUDED__
-#include <platform_support.h>
-#include <type_support.h>
-
-/*
- * For all non microsoft cases, we need the following functions
- */
-
-/* @brief Copy from src_buf to dest_buf.
- *
- * @param[out] dest_buf. Destination buffer to copy to
- * @param[in] dest_size. The size of the destination buffer in bytes
- * @param[in] src_buf. The source buffer
- * @param[in] src_size. The size of the source buffer in bytes
- * @return 0 on success, error code on failure
- * @return -EINVAL on Invalid arguments
- * @return ERANGE on Destination size too small
- */
-static inline int memcpy_s(
- void *dest_buf,
- size_t dest_size,
- const void *src_buf,
- size_t src_size)
-{
- if ((!src_buf) || (!dest_buf)) {
- /* Invalid arguments*/
- return -EINVAL;
- }
-
- if ((dest_size < src_size) || (src_size == 0)) {
- /* Destination too small*/
- return ERANGE;
- }
-
- memcpy(dest_buf, src_buf, src_size);
- return 0;
-}
-
-/* @brief Get the length of the string, excluding the null terminator
- *
- * @param[in] src_str. The source string
- * @param[in] max_len. Look only for max_len bytes in the string
- * @return Return the string length excluding null character
- * @return Return max_len if no null character in the first max_len bytes
- * @return Returns 0 if src_str is NULL
- */
-static size_t strnlen_s(
- const char *src_str,
- size_t max_len)
-{
- size_t ix;
-
- if (!src_str) {
- /* Invalid arguments*/
- return 0;
- }
-
- for (ix = 0; ix < max_len && src_str[ix] != '\0'; ix++)
- ;
-
- /* On Error, it will return src_size == max_len*/
- return ix;
-}
-
-/* @brief Copy string from src_str to dest_str
- *
- * @param[out] dest_str. Destination buffer to copy to
- * @param[in] dest_size. The size of the destination buffer in bytes
- * @param[in] src_str. The source buffer
- * @param[in] src_size. The size of the source buffer in bytes
- * @return Returns 0 on success
- * @return Returns -EINVAL on invalid arguments
- * @return Returns ERANGE on destination size too small
- */
-static inline int strncpy_s(
- char *dest_str,
- size_t dest_size,
- const char *src_str,
- size_t src_size)
-{
- size_t len;
-
- if (!dest_str) {
- /* Invalid arguments*/
- return -EINVAL;
- }
-
- if ((!src_str) || (dest_size == 0)) {
- /* Invalid arguments*/
- dest_str[0] = '\0';
- return -EINVAL;
- }
-
- len = strnlen_s(src_str, src_size);
-
- if (len >= dest_size) {
- /* Destination too small*/
- dest_str[0] = '\0';
- return ERANGE;
- }
-
- /* dest_str is big enough for the len */
- strncpy(dest_str, src_str, len);
- dest_str[len] = '\0';
- return 0;
-}
-
-/* @brief Copy string from src_str to dest_str
- *
- * @param[out] dest_str. Destination buffer to copy to
- * @param[in] dest_size. The size of the destination buffer in bytes
- * @param[in] src_str. The source buffer
- * @return Returns 0 on success
- * @return Returns -EINVAL on invalid arguments
- * @return Returns ERANGE on destination size too small
- */
-static inline int strcpy_s(
- char *dest_str,
- size_t dest_size,
- const char *src_str)
-{
- size_t len;
-
- if (!dest_str) {
- /* Invalid arguments*/
- return -EINVAL;
- }
-
- if ((!src_str) || (dest_size == 0)) {
- /* Invalid arguments*/
- dest_str[0] = '\0';
- return -EINVAL;
- }
-
- len = strnlen_s(src_str, dest_size);
-
- if (len >= dest_size) {
- /* Destination too small*/
- dest_str[0] = '\0';
- return ERANGE;
- }
-
- /* dest_str is big enough for the len */
- strncpy(dest_str, src_str, len);
- dest_str[len] = '\0';
- return 0;
-}
-
-#endif /* __STRING_SUPPORT_H_INCLUDED__ */
diff --git a/drivers/staging/media/atomisp/pci/isp/kernels/ctc/ctc_1.0/ia_css_ctc_table.host.c b/drivers/staging/media/atomisp/pci/isp/kernels/ctc/ctc_1.0/ia_css_ctc_table.host.c
index 454697c05b56..f13b79586963 100644
--- a/drivers/staging/media/atomisp/pci/isp/kernels/ctc/ctc_1.0/ia_css_ctc_table.host.c
+++ b/drivers/staging/media/atomisp/pci/isp/kernels/ctc/ctc_1.0/ia_css_ctc_table.host.c
@@ -13,8 +13,9 @@
* more details.
*/
+#include <linux/string.h> /* for memcpy() */
+
#include <type_support.h>
-#include <string_support.h> /* memcpy */
#include "system_global.h"
#include "vamem.h"
#include "ia_css_types.h"
diff --git a/drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_1.0/ia_css_gc_table.host.c b/drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_1.0/ia_css_gc_table.host.c
index 08e173fff6e0..f48f876777dc 100644
--- a/drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_1.0/ia_css_gc_table.host.c
+++ b/drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_1.0/ia_css_gc_table.host.c
@@ -13,8 +13,9 @@
* more details.
*/
+#include <linux/string.h> /* for memcpy() */
+
#include <type_support.h>
-#include <string_support.h> /* memcpy */
#include "system_global.h"
#include "vamem.h"
#include "ia_css_types.h"
diff --git a/drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_2/ia_css_gc2_table.host.c b/drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_2/ia_css_gc2_table.host.c
index fddb9e2ec24e..7eadb31268eb 100644
--- a/drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_2/ia_css_gc2_table.host.c
+++ b/drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_2/ia_css_gc2_table.host.c
@@ -13,8 +13,9 @@
* more details.
*/
+#include <linux/string.h> /* for memcpy() */
+
#include <type_support.h>
-#include <string_support.h> /* memcpy */
#include "system_global.h"
#include "vamem.h"
#include "ia_css_types.h"
diff --git a/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_1.0/ia_css_xnr_table.host.c b/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_1.0/ia_css_xnr_table.host.c
index b892dd8ebc2e..5566f3c16aac 100644
--- a/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_1.0/ia_css_xnr_table.host.c
+++ b/drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_1.0/ia_css_xnr_table.host.c
@@ -13,8 +13,9 @@
* more details.
*/
+#include <linux/string.h> /* for memcpy() */
+
#include <type_support.h>
-#include <string_support.h> /* memcpy */
#include "system_global.h"
#include "vamem.h"
#include "ia_css_types.h"
diff --git a/drivers/staging/media/atomisp/pci/runtime/debug/src/ia_css_debug.c b/drivers/staging/media/atomisp/pci/runtime/debug/src/ia_css_debug.c
index f64d8243400b..2bca27a04b02 100644
--- a/drivers/staging/media/atomisp/pci/runtime/debug/src/ia_css_debug.c
+++ b/drivers/staging/media/atomisp/pci/runtime/debug/src/ia_css_debug.c
@@ -31,6 +31,8 @@
#define __INLINE_STREAM2MMIO__
#endif
+#include <linux/string.h> /* for strscpy() */
+
#include "ia_css_debug.h"
#include "ia_css_debug_pipe.h"
#include "ia_css_irq.h"
@@ -47,7 +49,6 @@
#include "system_local.h"
#include "assert_support.h"
#include "print_support.h"
-#include "string_support.h"
#include "fifo_monitor.h"
@@ -2769,8 +2770,9 @@ ia_css_debug_pipe_graph_dump_stage(
stage->binary->info->blob->name, stage->stage_num);
} else if (stage->firmware) {
bin_type = "firmware";
- strncpy_s(blob_name, sizeof(blob_name),
- IA_CSS_EXT_ISP_PROG_NAME(stage->firmware), sizeof(blob_name));
+
+ strscpy(blob_name, IA_CSS_EXT_ISP_PROG_NAME(stage->firmware),
+ sizeof(blob_name));
}
/* Guard in case of binaries that don't have any binary_info */
@@ -2836,10 +2838,8 @@ ia_css_debug_pipe_graph_dump_stage(
while (ei[p] != ',')
p--;
/* Last comma found, copy till that comma */
- strncpy_s(enable_info1,
- sizeof(enable_info1),
- ei, p);
- enable_info1[p] = '\0';
+ strscpy(enable_info1, ei,
+ p > sizeof(enable_info1) ? sizeof(enable_info1) : p);
ei += p + 1;
l = strlen(ei);
@@ -2849,10 +2849,10 @@ ia_css_debug_pipe_graph_dump_stage(
/* we cannot use ei as argument because
* it is not guaranteed dword aligned
*/
- strncpy_s(enable_info2,
- sizeof(enable_info2),
- ei, l);
- enable_info2[l] = '\0';
+
+ strscpy(enable_info2, ei,
+ l > sizeof(enable_info2) ? sizeof(enable_info2) : l);
+
snprintf(enable_info, sizeof(enable_info), "%s\\n%s",
enable_info1, enable_info2);
@@ -2861,10 +2861,10 @@ ia_css_debug_pipe_graph_dump_stage(
p = ENABLE_LINE_MAX_LENGTH;
while (ei[p] != ',')
p--;
- strncpy_s(enable_info2,
- sizeof(enable_info2),
- ei, p);
- enable_info2[p] = '\0';
+
+ strscpy(enable_info2, ei,
+ p > sizeof(enable_info2) ? sizeof(enable_info2) : p);
+
ei += p + 1;
l = strlen(ei);
@@ -2873,9 +2873,8 @@ ia_css_debug_pipe_graph_dump_stage(
/* we cannot use ei as argument because
* it is not guaranteed dword aligned
*/
- strcpy_s(enable_info3,
- sizeof(enable_info3), ei);
- enable_info3[l] = '\0';
+ strscpy(enable_info3, ei,
+ sizeof(enable_info3));
snprintf(enable_info, sizeof(enable_info),
"%s\\n%s\\n%s",
enable_info1, enable_info2,
@@ -2885,13 +2884,11 @@ ia_css_debug_pipe_graph_dump_stage(
p = ENABLE_LINE_MAX_LENGTH;
while (ei[p] != ',')
p--;
- strncpy_s(enable_info3,
- sizeof(enable_info3),
- ei, p);
- enable_info3[p] = '\0';
+ strscpy(enable_info3, ei,
+ p > sizeof(enable_info3) ? sizeof(enable_info3) : p);
ei += p + 1;
- strcpy_s(enable_info3,
- sizeof(enable_info3), ei);
+ strscpy(enable_info3, ei,
+ sizeof(enable_info3));
snprintf(enable_info, sizeof(enable_info),
"%s\\n%s\\n%s",
enable_info1, enable_info2,
diff --git a/drivers/staging/media/atomisp/pci/runtime/isys/src/virtual_isys.c b/drivers/staging/media/atomisp/pci/runtime/isys/src/virtual_isys.c
index 95cf6ac342b6..b3c6831cb9e3 100644
--- a/drivers/staging/media/atomisp/pci/runtime/isys/src/virtual_isys.c
+++ b/drivers/staging/media/atomisp/pci/runtime/isys/src/virtual_isys.c
@@ -13,6 +13,8 @@
* more details.
*/
+#include <linux/string.h> /* for memcpy() */
+
#include "system_global.h"
#ifdef USE_INPUT_SYSTEM_VERSION_2401
@@ -20,7 +22,6 @@
#include "ia_css_isys.h"
#include "ia_css_debug.h"
#include "math_support.h"
-#include "string_support.h"
#include "virtual_isys.h"
#include "isp.h"
#include "sh_css_defs.h"
@@ -650,14 +651,8 @@ static bool calculate_tpg_cfg(
input_system_cfg_t *isys_cfg,
pixelgen_tpg_cfg_t *cfg)
{
- (void)channel;
- (void)input_port;
+ memcpy(cfg, &isys_cfg->tpg_port_attr, sizeof(pixelgen_tpg_cfg_t));
- memcpy_s(
- (void *)cfg,
- sizeof(pixelgen_tpg_cfg_t),
- (void *)(&isys_cfg->tpg_port_attr),
- sizeof(pixelgen_tpg_cfg_t));
return true;
}
@@ -667,14 +662,8 @@ static bool calculate_prbs_cfg(
input_system_cfg_t *isys_cfg,
pixelgen_prbs_cfg_t *cfg)
{
- (void)channel;
- (void)input_port;
+ memcpy(cfg, &isys_cfg->prbs_port_attr, sizeof(pixelgen_prbs_cfg_t));
- memcpy_s(
- (void *)cfg,
- sizeof(pixelgen_prbs_cfg_t),
- (void *)(&isys_cfg->prbs_port_attr),
- sizeof(pixelgen_prbs_cfg_t));
return true;
}
@@ -692,12 +681,10 @@ static bool calculate_be_cfg(
bool metadata,
csi_rx_backend_cfg_t *cfg)
{
- memcpy_s(
- (void *)(&cfg->lut_entry),
- sizeof(csi_rx_backend_lut_entry_t),
- metadata ? (void *)(&input_port->metadata.backend_lut_entry) :
- (void *)(&input_port->csi_rx.backend_lut_entry),
- sizeof(csi_rx_backend_lut_entry_t));
+ memcpy(&cfg->lut_entry,
+ metadata ? &input_port->metadata.backend_lut_entry :
+ &input_port->csi_rx.backend_lut_entry,
+ sizeof(csi_rx_backend_lut_entry_t));
cfg->csi_mipi_cfg.virtual_channel = isys_cfg->csi_port_attr.ch_id;
if (metadata) {
diff --git a/drivers/staging/media/atomisp/pci/sh_css_firmware.c b/drivers/staging/media/atomisp/pci/sh_css_firmware.c
index d464052a3d2d..2daee7d85631 100644
--- a/drivers/staging/media/atomisp/pci/sh_css_firmware.c
+++ b/drivers/staging/media/atomisp/pci/sh_css_firmware.c
@@ -13,6 +13,7 @@
* more details.
*/
+#include <linux/string.h> /* for memcpy() */
#include <linux/slab.h>
#include <linux/vmalloc.h>
@@ -28,7 +29,6 @@
#include "ia_css_isp_param.h"
#include "assert_support.h"
-#include "string_support.h"
#include "isp.h" /* PMEM_WIDTH_LOG2 */
--
2.26.2