diff options
author | Arthur Simchaev <Arthur.Simchaev@wdc.com> | 2022-12-11 15:05:09 +0200 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-12-30 21:48:37 +0000 |
commit | f2a89b071b26b79abbe892ce88c4d674d1f21f63 (patch) | |
tree | 4562e145d889741bd4b9c14671ef6447ceb8fdd1 /drivers/ufs/core/ufshcd.c | |
parent | 358ae02f47783c1d2a8033e50563ea1a9d176c15 (diff) |
scsi: ufs: core: Remove redundant desc_size variable from hba
Always read the descriptor with QUERY_DESC_MAX_SIZE. According to the
spec, the device returns the actual size.
Signed-off-by: Arthur Simchaev <Arthur.Simchaev@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs/core/ufshcd.c')
-rw-r--r-- | drivers/ufs/core/ufshcd.c | 72 |
1 files changed, 13 insertions, 59 deletions
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 2e47c69d9b04..bb032bc3948e 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -3369,37 +3369,6 @@ int ufshcd_query_descriptor_retry(struct ufs_hba *hba, } /** - * ufshcd_map_desc_id_to_length - map descriptor IDN to its length - * @hba: Pointer to adapter instance - * @desc_id: descriptor idn value - * @desc_len: mapped desc length (out) - */ -void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id, - int *desc_len) -{ - if (desc_id >= QUERY_DESC_IDN_MAX || desc_id == QUERY_DESC_IDN_RFU_0 || - desc_id == QUERY_DESC_IDN_RFU_1) - *desc_len = 0; - else - *desc_len = hba->desc_size[desc_id]; -} -EXPORT_SYMBOL(ufshcd_map_desc_id_to_length); - -static void ufshcd_update_desc_length(struct ufs_hba *hba, - enum desc_idn desc_id, int desc_index, - unsigned char desc_len) -{ - if (hba->desc_size[desc_id] == QUERY_DESC_MAX_SIZE && - desc_id != QUERY_DESC_IDN_STRING && desc_index != UFS_RPMB_UNIT) - /* For UFS 3.1, the normal unit descriptor is 10 bytes larger - * than the RPMB unit, however, both descriptors share the same - * desc_idn, to cover both unit descriptors with one length, we - * choose the normal unit descriptor length by desc_index. - */ - hba->desc_size[desc_id] = desc_len; -} - -/** * ufshcd_read_desc_param - read the specified descriptor parameter * @hba: Pointer to adapter instance * @desc_id: descriptor idn value @@ -3419,20 +3388,13 @@ int ufshcd_read_desc_param(struct ufs_hba *hba, { int ret; u8 *desc_buf; - int buff_len; + int buff_len = QUERY_DESC_MAX_SIZE; bool is_kmalloc = true; /* Safety check */ if (desc_id >= QUERY_DESC_IDN_MAX || !param_size) return -EINVAL; - /* Get the length of descriptor */ - ufshcd_map_desc_id_to_length(hba, desc_id, &buff_len); - if (!buff_len) { - dev_err(hba->dev, "%s: Failed to get desc length\n", __func__); - return -EINVAL; - } - if (param_offset >= buff_len) { dev_err(hba->dev, "%s: Invalid offset 0x%x in descriptor IDN 0x%x, length 0x%x\n", __func__, param_offset, desc_id, buff_len); @@ -3470,7 +3432,6 @@ int ufshcd_read_desc_param(struct ufs_hba *hba, /* Update descriptor length */ buff_len = desc_buf[QUERY_DESC_LENGTH_OFFSET]; - ufshcd_update_desc_length(hba, desc_id, desc_index, buff_len); if (is_kmalloc) { /* Make sure we don't copy more data than available */ @@ -4909,7 +4870,7 @@ static void ufshcd_setup_links(struct ufs_hba *hba, struct scsi_device *sdev) */ static void ufshcd_lu_init(struct ufs_hba *hba, struct scsi_device *sdev) { - int len = hba->desc_size[QUERY_DESC_IDN_UNIT]; + int len = QUERY_DESC_MAX_SIZE; u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); u8 lun_qdepth = hba->nutrs; u8 *desc_buf; @@ -7480,25 +7441,24 @@ out: static void ufshcd_set_active_icc_lvl(struct ufs_hba *hba) { int ret; - int buff_len = hba->desc_size[QUERY_DESC_IDN_POWER]; u8 *desc_buf; u32 icc_level; - desc_buf = kmalloc(buff_len, GFP_KERNEL); + desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL); if (!desc_buf) return; ret = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, 0, - desc_buf, buff_len); + desc_buf, QUERY_DESC_MAX_SIZE); if (ret) { dev_err(hba->dev, - "%s: Failed reading power descriptor.len = %d ret = %d", - __func__, buff_len, ret); + "%s: Failed reading power descriptor ret = %d", + __func__, ret); goto out; } icc_level = ufshcd_find_max_sup_active_icc_level(hba, desc_buf, - buff_len); + QUERY_DESC_MAX_SIZE); dev_dbg(hba->dev, "%s: setting icc_level 0x%x", __func__, icc_level); ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, @@ -7715,14 +7675,14 @@ static int ufs_get_device_desc(struct ufs_hba *hba) u8 *desc_buf; struct ufs_dev_info *dev_info = &hba->dev_info; - desc_buf = kmalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL); + desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL); if (!desc_buf) { err = -ENOMEM; goto out; } err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_DEVICE, 0, 0, desc_buf, - hba->desc_size[QUERY_DESC_IDN_DEVICE]); + QUERY_DESC_MAX_SIZE); if (err) { dev_err(hba->dev, "%s: Failed reading Device Desc. err = %d\n", __func__, err); @@ -7969,18 +7929,16 @@ static void ufshcd_clear_dbg_ufs_stats(struct ufs_hba *hba) static int ufshcd_device_geo_params_init(struct ufs_hba *hba) { int err; - size_t buff_len; u8 *desc_buf; - buff_len = hba->desc_size[QUERY_DESC_IDN_GEOMETRY]; - desc_buf = kmalloc(buff_len, GFP_KERNEL); + desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL); if (!desc_buf) { err = -ENOMEM; goto out; } err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_GEOMETRY, 0, 0, - desc_buf, buff_len); + desc_buf, QUERY_DESC_MAX_SIZE); if (err) { dev_err(hba->dev, "%s: Failed reading Geometry Desc. err = %d\n", __func__, err); @@ -7992,7 +7950,7 @@ static int ufshcd_device_geo_params_init(struct ufs_hba *hba) else if (desc_buf[GEOMETRY_DESC_PARAM_MAX_NUM_LUN] == 0) hba->dev_info.max_lu_supported = 8; - if (hba->desc_size[QUERY_DESC_IDN_GEOMETRY] >= + if (desc_buf[QUERY_DESC_LENGTH_OFFSET] >= GEOMETRY_DESC_PARAM_HPB_MAX_ACTIVE_REGS) ufshpb_get_geo_info(hba, desc_buf); @@ -8077,11 +8035,7 @@ out: static int ufshcd_device_params_init(struct ufs_hba *hba) { bool flag; - int ret, i; - - /* Init device descriptor sizes */ - for (i = 0; i < QUERY_DESC_IDN_MAX; i++) - hba->desc_size[i] = QUERY_DESC_MAX_SIZE; + int ret; /* Init UFS geometry descriptor related parameters */ ret = ufshcd_device_geo_params_init(hba); |