[PATCH 23/26] stating: ccree: fix allocation of void sized buf

From: Gilad Ben-Yossef
Date: Mon Jan 01 2018 - 07:11:26 EST


We were allocating buffers using sizeof(*struct->field) where field was
type void. Fix it by having a local variable with the real type.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx>
---
drivers/staging/ccree/cc_debugfs.c | 3 ++-
drivers/staging/ccree/ssi_ivgen.c | 9 ++++-----
drivers/staging/ccree/ssi_sram_mgr.c | 9 ++++++---
3 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/ccree/cc_debugfs.c b/drivers/staging/ccree/cc_debugfs.c
index 62bf011..140c04b 100644
--- a/drivers/staging/ccree/cc_debugfs.c
+++ b/drivers/staging/ccree/cc_debugfs.c
@@ -6,6 +6,7 @@
#include <linux/stringify.h>
#include "ssi_driver.h"
#include "cc_crypto_ctx.h"
+#include "cc_debugfs.h"

struct cc_debugfs_ctx {
struct dentry *dir;
@@ -24,7 +25,7 @@ struct cc_debugfs_ctx {
*/
static struct dentry *cc_debugfs_dir;

-struct debugfs_reg32 debug_regs[] = {
+static struct debugfs_reg32 debug_regs[] = {
CC_DEBUG_REG(HOST_SIGNATURE),
CC_DEBUG_REG(HOST_IRR),
CC_DEBUG_REG(HOST_POWER_DOWN_EN),
diff --git a/drivers/staging/ccree/ssi_ivgen.c b/drivers/staging/ccree/ssi_ivgen.c
index 8051fa1..44acded 100644
--- a/drivers/staging/ccree/ssi_ivgen.c
+++ b/drivers/staging/ccree/ssi_ivgen.c
@@ -175,13 +175,10 @@ int cc_ivgen_init(struct cc_drvdata *drvdata)
int rc;

/* Allocate "this" context */
- drvdata->ivgen_handle = kzalloc(sizeof(*drvdata->ivgen_handle),
- GFP_KERNEL);
- if (!drvdata->ivgen_handle)
+ ivgen_ctx = kzalloc(sizeof(*ivgen_ctx), GFP_KERNEL);
+ if (!ivgen_ctx)
return -ENOMEM;

- ivgen_ctx = drvdata->ivgen_handle;
-
/* Allocate pool's header for initial enc. key/IV */
ivgen_ctx->pool_meta = dma_alloc_coherent(device, CC_IVPOOL_META_SIZE,
&ivgen_ctx->pool_meta_dma,
@@ -200,6 +197,8 @@ int cc_ivgen_init(struct cc_drvdata *drvdata)
goto out;
}

+ drvdata->ivgen_handle = ivgen_ctx;
+
return cc_init_iv_sram(drvdata);

out:
diff --git a/drivers/staging/ccree/ssi_sram_mgr.c b/drivers/staging/ccree/ssi_sram_mgr.c
index 0613aaf..5bf37bf 100644
--- a/drivers/staging/ccree/ssi_sram_mgr.c
+++ b/drivers/staging/ccree/ssi_sram_mgr.c
@@ -32,13 +32,16 @@ void cc_sram_mgr_fini(struct cc_drvdata *drvdata)
*/
int cc_sram_mgr_init(struct cc_drvdata *drvdata)
{
+ struct cc_sram_ctx *ctx;
+
/* Allocate "this" context */
- drvdata->sram_mgr_handle = kzalloc(sizeof(*drvdata->sram_mgr_handle),
- GFP_KERNEL);
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);

- if (!drvdata->sram_mgr_handle)
+ if (!ctx)
return -ENOMEM;

+ drvdata->sram_mgr_handle = ctx;
+
return 0;
}

--
2.7.4