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path: root/drivers/crypto/hisilicon/debugfs.c
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Diffstat (limited to 'drivers/crypto/hisilicon/debugfs.c')
-rw-r--r--drivers/crypto/hisilicon/debugfs.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/crypto/hisilicon/debugfs.c b/drivers/crypto/hisilicon/debugfs.c
index cd67fa348c..6351a45287 100644
--- a/drivers/crypto/hisilicon/debugfs.c
+++ b/drivers/crypto/hisilicon/debugfs.c
@@ -809,8 +809,14 @@ static void dfx_regs_uninit(struct hisi_qm *qm,
{
int i;
+ if (!dregs)
+ return;
+
/* Setting the pointer is NULL to prevent double free */
for (i = 0; i < reg_len; i++) {
+ if (!dregs[i].regs)
+ continue;
+
kfree(dregs[i].regs);
dregs[i].regs = NULL;
}
@@ -860,14 +866,21 @@ alloc_error:
static int qm_diff_regs_init(struct hisi_qm *qm,
struct dfx_diff_registers *dregs, u32 reg_len)
{
+ int ret;
+
qm->debug.qm_diff_regs = dfx_regs_init(qm, qm_diff_regs, ARRAY_SIZE(qm_diff_regs));
- if (IS_ERR(qm->debug.qm_diff_regs))
- return PTR_ERR(qm->debug.qm_diff_regs);
+ if (IS_ERR(qm->debug.qm_diff_regs)) {
+ ret = PTR_ERR(qm->debug.qm_diff_regs);
+ qm->debug.qm_diff_regs = NULL;
+ return ret;
+ }
qm->debug.acc_diff_regs = dfx_regs_init(qm, dregs, reg_len);
if (IS_ERR(qm->debug.acc_diff_regs)) {
dfx_regs_uninit(qm, qm->debug.qm_diff_regs, ARRAY_SIZE(qm_diff_regs));
- return PTR_ERR(qm->debug.acc_diff_regs);
+ ret = PTR_ERR(qm->debug.acc_diff_regs);
+ qm->debug.acc_diff_regs = NULL;
+ return ret;
}
return 0;
@@ -908,7 +921,9 @@ static int qm_last_regs_init(struct hisi_qm *qm)
static void qm_diff_regs_uninit(struct hisi_qm *qm, u32 reg_len)
{
dfx_regs_uninit(qm, qm->debug.acc_diff_regs, reg_len);
+ qm->debug.acc_diff_regs = NULL;
dfx_regs_uninit(qm, qm->debug.qm_diff_regs, ARRAY_SIZE(qm_diff_regs));
+ qm->debug.qm_diff_regs = NULL;
}
/**