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crypto: hisilicon/qm - restore original qos values

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When the new qos valus setting fails, restore to
the original qos values.

Fixes: 72b010dc33 ("crypto: hisilicon/qm - supports writing QoS int the host")
Signed-off-by: nieweiqiang <nieweiqiang@huawei.com>
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
nieweiqiang 2025-10-18 19:27:39 +08:00 committed by Herbert Xu
parent 7fc25ed2bc
commit e7066160f5
1 changed files with 13 additions and 1 deletions
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14
drivers/crypto/hisilicon/qm.c
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@ -3678,6 +3678,7 @@ static void qm_clear_vft_config(struct hisi_qm *qm)
static int qm_func_shaper_enable(struct hisi_qm *qm, u32 fun_index, u32 qos)
{
struct device *dev = &qm->pdev->dev;
struct qm_shaper_factor t_factor;
u32 ir = qos * QM_QOS_RATE;
int ret, total_vfs, i;
@ -3685,6 +3686,7 @@ static int qm_func_shaper_enable(struct hisi_qm *qm, u32 fun_index, u32 qos)
if (fun_index > total_vfs)
return -EINVAL;
memcpy(&t_factor, &qm->factor[fun_index], sizeof(t_factor));
qm->factor[fun_index].func_qos = qos;
ret = qm_get_shaper_para(ir, &qm->factor[fun_index]);
@ -3698,11 +3700,21 @@ static int qm_func_shaper_enable(struct hisi_qm *qm, u32 fun_index, u32 qos)
ret = qm_set_vft_common(qm, SHAPER_VFT, fun_index, i, 1);
if (ret) {
dev_err(dev, "type: %d, failed to set shaper vft!\n", i);
return -EINVAL;
goto back_func_qos;
}
}
return 0;
back_func_qos:
memcpy(&qm->factor[fun_index], &t_factor, sizeof(t_factor));
for (i--; i >= ALG_TYPE_0; i--) {
ret = qm_set_vft_common(qm, SHAPER_VFT, fun_index, i, 1);
if (ret)
dev_err(dev, "failed to restore shaper vft during rollback!\n");
}
return -EINVAL;
}
static u32 qm_get_shaper_vft_qos(struct hisi_qm *qm, u32 fun_index)