[PATCH 5.19 0444/1157] hinic: Use the bitmap API when applicable

Greg Kroah-Hartman
2022-08-15T23:55:06Z

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit 7c2c57263af41cfd8b5022274e6801542831bb69 ]

'vlan_bitmap' is a bitmap and is used as such. So allocate it with
devm_bitmap_zalloc() and its explicit bit size (i.e. VLAN_N_VID).

This avoids the need of the VLAN_BITMAP_SIZE macro which:
- needlessly has a 'nic_dev' parameter
- should be "long" (and not byte) aligned, so that the bitmap semantic
is respected

This is in fact not an issue because VLAN_N_VID is 4096 at the time
being, but devm_bitmap_zalloc() is less verbose and easier to understand.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/6ff7b7d21414240794a77dc2456914412718a145.1656260842.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/huawei/hinic/hinic_main.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index 05329292d940..56a89793f47d 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -62,8 +62,6 @@ MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)");

#define HINIC_LRO_RX_TIMER_DEFAULT 16

-#define VLAN_BITMAP_SIZE(nic_dev) (ALIGN(VLAN_N_VID, 8) / 8)
-
#define work_to_rx_mode_work(work) \
container_of(work, struct hinic_rx_mode_work, work)

@@ -1242,9 +1240,8 @@ static int nic_dev_init(struct pci_dev *pdev)
u64_stats_init(&tx_stats->syncp);
u64_stats_init(&rx_stats->syncp);

- nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
- VLAN_BITMAP_SIZE(nic_dev),
- GFP_KERNEL);
+ nic_dev->vlan_bitmap = devm_bitmap_zalloc(&pdev->dev, VLAN_N_VID,
+ GFP_KERNEL);
if (!nic_dev->vlan_bitmap) {
err = -ENOMEM;
goto err_vlan_bitmap;
--
2.35.1