diff options
| author | Hyeoncheol Jeong <hyenc.jeong@samsung.com> | 2026-07-28 18:24:34 +0900 |
|---|---|---|
| committer | Martin K. Petersen (Oracle) <mkp@kernel.org> | 2026-08-07 11:32:19 -0400 |
| commit | dca46c4ff2cd5be17039a99613b6b4bb0923fe9a (patch) | |
| tree | a268ff0082e392c57bcabc3baab134724ddcaa15 | |
| parent | dc59e4fea9d83f03bad6bddf3fa2e52491777482 (diff) | |
| download | linux-dca46c4ff2cd5be17039a99613b6b4bb0923fe9a.tar.gz linux-dca46c4ff2cd5be17039a99613b6b4bb0923fe9a.zip | |
scsi: ufs: Use unsigned types for the BSG query
The UPIU query length field is an unsigned 16-bit value per the UFS
standard, but ufs_bsg carried it around in signed int. Switch the
descriptor length and buffer pointer to u16/u8, fold the trivial
ufs_bsg_get_query_desc_size() helper into its only caller, and replace
min_t(int, ...) with min(). No functional change intended.
Signed-off-by: Hyeoncheol Jeong <hyenc.jeong@samsung.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260728092434epcms2p56b013ab7a2df90d3df9186322de54340@epcms2p5
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>
| -rw-r--r-- | drivers/ufs/core/ufs_bsg.c | 29 |
1 files changed, 11 insertions, 18 deletions
diff --git a/drivers/ufs/core/ufs_bsg.c b/drivers/ufs/core/ufs_bsg.c index 58b506eac6dc..089cf81de275 100644 --- a/drivers/ufs/core/ufs_bsg.c +++ b/drivers/ufs/core/ufs_bsg.c @@ -13,21 +13,8 @@ #include <ufs/ufshcd.h> #include "ufshcd-priv.h" -static int ufs_bsg_get_query_desc_size(struct ufs_hba *hba, int *desc_len, - struct utp_upiu_query *qr) -{ - int desc_size = be16_to_cpu(qr->length); - - if (desc_size <= 0) - return -EINVAL; - - *desc_len = min_t(int, QUERY_DESC_MAX_SIZE, desc_size); - - return 0; -} - static int ufs_bsg_alloc_desc_buffer(struct ufs_hba *hba, struct bsg_job *job, - uint8_t **desc_buff, int *desc_len, + u8 **desc_buff, u16 *desc_len, enum query_opcode desc_op) { struct ufs_bsg_request *bsg_request = job->request; @@ -39,11 +26,14 @@ static int ufs_bsg_alloc_desc_buffer(struct ufs_hba *hba, struct bsg_job *job, goto out; qr = &bsg_request->upiu_req.qr; - if (ufs_bsg_get_query_desc_size(hba, desc_len, qr)) { + *desc_len = be16_to_cpu(qr->length); + if (*desc_len == 0) { dev_err(hba->dev, "Illegal desc size\n"); return -EINVAL; } + *desc_len = min(*desc_len, QUERY_DESC_MAX_SIZE); + if (*desc_len > job->request_payload.payload_len) { dev_err(hba->dev, "Illegal desc size\n"); return -EINVAL; @@ -136,8 +126,9 @@ static int ufs_bsg_request(struct bsg_job *job) struct ufs_hba *hba = shost_priv(dev_to_shost(job->dev->parent)); struct uic_command uc = {}; int msgcode; - uint8_t *buff = NULL; - int desc_len = 0; + u8 *buff = NULL; + u16 desc_len = 0; + int buff_len; enum query_opcode desc_op = UPIU_QUERY_OPCODE_NOP; int ret; bool rpmb = false; @@ -156,9 +147,11 @@ static int ufs_bsg_request(struct bsg_job *job) fallthrough; case UPIU_TRANSACTION_NOP_OUT: case UPIU_TRANSACTION_TASK_REQ: + buff_len = desc_len; ret = ufshcd_exec_raw_upiu_cmd(hba, &bsg_request->upiu_req, &bsg_reply->upiu_rsp, msgcode, - buff, &desc_len, desc_op); + buff, &buff_len, desc_op); + desc_len = buff_len; if (ret) dev_err(hba->dev, "exe raw upiu: error code %d\n", ret); else if (desc_op == UPIU_QUERY_OPCODE_READ_DESC && desc_len) { |