2021-01-12 10:07:06

by Bean Huo

[permalink] [raw]
Subject: [PATCH v2 0/2] Remove unnecessary devm_kfree

From: Bean Huo <[email protected]>

Changelog:

V1-V2:
1. Remove unused variable i in patch 1/2
2. Add Eric Biggers review tag in patch 2/2

Bean Huo (2):
scsi: hisi_sas: Remove unnecessary devm_kfree
scsi: ufs: Remove unnecessary devm_kfree

drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 28 +-------------------------
drivers/scsi/ufs/ufshcd-crypto.c | 4 +---
2 files changed, 2 insertions(+), 30 deletions(-)

--
2.17.1


2021-01-12 10:08:41

by Bean Huo

[permalink] [raw]
Subject: [PATCH v2 2/2] scsi: ufs: Remove unnecessary devm_kfree

From: Bean Huo <[email protected]>

The memory allocated with devm_kzalloc() is freed automatically
no need to explicitly call devm_kfree.

Reviewed-by: Eric Biggers <[email protected]>
Signed-off-by: Bean Huo <[email protected]>
---
drivers/scsi/ufs/ufshcd-crypto.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd-crypto.c b/drivers/scsi/ufs/ufshcd-crypto.c
index 07310b12a5dc..ec80ec83cf85 100644
--- a/drivers/scsi/ufs/ufshcd-crypto.c
+++ b/drivers/scsi/ufs/ufshcd-crypto.c
@@ -182,7 +182,7 @@ int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba)
err = blk_ksm_init(&hba->ksm,
hba->crypto_capabilities.config_count + 1);
if (err)
- goto out_free_caps;
+ goto out;

hba->ksm.ksm_ll_ops = ufshcd_ksm_ops;
/* UFS only supports 8 bytes for any DUN */
@@ -208,8 +208,6 @@ int ufshcd_hba_init_crypto_capabilities(struct ufs_hba *hba)

return 0;

-out_free_caps:
- devm_kfree(hba->dev, hba->crypto_cap_array);
out:
/* Indicate that init failed by clearing UFSHCD_CAP_CRYPTO */
hba->caps &= ~UFSHCD_CAP_CRYPTO;
--
2.17.1

2021-01-12 22:11:11

by Bean Huo

[permalink] [raw]
Subject: [PATCH v2 1/2] scsi: hisi_sas: Remove unnecessary devm_kfree

From: Bean Huo <[email protected]>

The memory allocated with devm_kzalloc() is freed automatically
no need to explicitly call devm_kfree.

Signed-off-by: Bean Huo <[email protected]>
---
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 28 +-------------------------
1 file changed, 1 insertion(+), 27 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 91a7286e8102..5600411a0820 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -4172,30 +4172,6 @@ static void debugfs_work_handler_v3_hw(struct work_struct *work)
hisi_hba->debugfs_dump_index++;
}

-static void debugfs_release_v3_hw(struct hisi_hba *hisi_hba, int dump_index)
-{
- struct device *dev = hisi_hba->dev;
- int i;
-
- devm_kfree(dev, hisi_hba->debugfs_iost_cache[dump_index].cache);
- devm_kfree(dev, hisi_hba->debugfs_itct_cache[dump_index].cache);
- devm_kfree(dev, hisi_hba->debugfs_iost[dump_index].iost);
- devm_kfree(dev, hisi_hba->debugfs_itct[dump_index].itct);
-
- for (i = 0; i < hisi_hba->queue_count; i++)
- devm_kfree(dev, hisi_hba->debugfs_dq[dump_index][i].hdr);
-
- for (i = 0; i < hisi_hba->queue_count; i++)
- devm_kfree(dev,
- hisi_hba->debugfs_cq[dump_index][i].complete_hdr);
-
- for (i = 0; i < DEBUGFS_REGS_NUM; i++)
- devm_kfree(dev, hisi_hba->debugfs_regs[dump_index][i].data);
-
- for (i = 0; i < hisi_hba->n_phy; i++)
- devm_kfree(dev, hisi_hba->debugfs_port_reg[dump_index][i].data);
-}
-
static const struct hisi_sas_debugfs_reg *debugfs_reg_array_v3_hw[DEBUGFS_REGS_NUM] = {
[DEBUGFS_GLOBAL] = &debugfs_global_reg,
[DEBUGFS_AXI] = &debugfs_axi_reg,
@@ -4206,7 +4182,7 @@ static int debugfs_alloc_v3_hw(struct hisi_hba *hisi_hba, int dump_index)
{
const struct hisi_sas_hw *hw = hisi_hba->hw;
struct device *dev = hisi_hba->dev;
- int p, c, d, r, i;
+ int p, c, d, r;
size_t sz;

for (r = 0; r < DEBUGFS_REGS_NUM; r++) {
@@ -4286,8 +4262,6 @@ static int debugfs_alloc_v3_hw(struct hisi_hba *hisi_hba, int dump_index)

return 0;
fail:
- for (i = 0; i < hisi_sas_debugfs_dump_count; i++)
- debugfs_release_v3_hw(hisi_hba, i);
return -ENOMEM;
}

--
2.17.1