Transfer command descriptor is allocated in ufshcd_memory_alloc()
and referenced by transfer request descriptor with stride size
sizeof_utp_transfer_cmd_desc()
instead of
sizeof(struct utp_transfer_cmd_desc).
Consequently, computing tag by address offset should also refer to the
same stride.
As suggested, sizeof_utp_transfer_cmd_desc() is further renamed to
ufshcd_get_ucd_size().
Signed-off-by: Po-Wen Kao <[email protected]>
---
drivers/ufs/core/ufs-mcq.c | 2 +-
drivers/ufs/core/ufshcd.c | 8 ++++----
include/ufs/ufshcd.h | 2 +-
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
index 31df052fbc41..a39746b2a8be 100644
--- a/drivers/ufs/core/ufs-mcq.c
+++ b/drivers/ufs/core/ufs-mcq.c
@@ -265,7 +265,7 @@ static int ufshcd_mcq_get_tag(struct ufs_hba *hba,
addr = (le64_to_cpu(cqe->command_desc_base_addr) & CQE_UCD_BA) -
hba->ucdl_dma_addr;
- return div_u64(addr, sizeof(struct utp_transfer_cmd_desc));
+ return div_u64(addr, ufshcd_get_ucd_size(hba));
}
static void ufshcd_mcq_process_cqe(struct ufs_hba *hba,
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 3b3cf78d3b10..81c9f07ebfc8 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -2823,10 +2823,10 @@ static void ufshcd_map_queues(struct Scsi_Host *shost)
static void ufshcd_init_lrb(struct ufs_hba *hba, struct ufshcd_lrb *lrb, int i)
{
struct utp_transfer_cmd_desc *cmd_descp = (void *)hba->ucdl_base_addr +
- i * sizeof_utp_transfer_cmd_desc(hba);
+ i * ufshcd_get_ucd_size(hba);
struct utp_transfer_req_desc *utrdlp = hba->utrdl_base_addr;
dma_addr_t cmd_desc_element_addr = hba->ucdl_dma_addr +
- i * sizeof_utp_transfer_cmd_desc(hba);
+ i * ufshcd_get_ucd_size(hba);
u16 response_offset = offsetof(struct utp_transfer_cmd_desc,
response_upiu);
u16 prdt_offset = offsetof(struct utp_transfer_cmd_desc, prd_table);
@@ -3735,7 +3735,7 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba)
size_t utmrdl_size, utrdl_size, ucdl_size;
/* Allocate memory for UTP command descriptors */
- ucdl_size = sizeof_utp_transfer_cmd_desc(hba) * hba->nutrs;
+ ucdl_size = ufshcd_get_ucd_size(hba) * hba->nutrs;
hba->ucdl_base_addr = dmam_alloc_coherent(hba->dev,
ucdl_size,
&hba->ucdl_dma_addr,
@@ -3835,7 +3835,7 @@ static void ufshcd_host_memory_configure(struct ufs_hba *hba)
prdt_offset =
offsetof(struct utp_transfer_cmd_desc, prd_table);
- cmd_desc_size = sizeof_utp_transfer_cmd_desc(hba);
+ cmd_desc_size = ufshcd_get_ucd_size(hba);
cmd_desc_dma_addr = hba->ucdl_dma_addr;
for (i = 0; i < hba->nutrs; i++) {
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index ed9e3d5addb3..8f79cca449e1 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -1136,7 +1136,7 @@ static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba)
({ (void)(hba); BUILD_BUG_ON(sg_entry_size != sizeof(struct ufshcd_sg_entry)); })
#endif
-static inline size_t sizeof_utp_transfer_cmd_desc(const struct ufs_hba *hba)
+static inline size_t ufshcd_get_ucd_size(const struct ufs_hba *hba)
{
return sizeof(struct utp_transfer_cmd_desc) + SG_ALL * ufshcd_sg_entry_size(hba);
}
--
2.18.0
On 2/21/23 07:29, Po-Wen Kao wrote:
> Transfer command descriptor is allocated in ufshcd_memory_alloc()
> and referenced by transfer request descriptor with stride size
> sizeof_utp_transfer_cmd_desc()
> instead of
> sizeof(struct utp_transfer_cmd_desc).
>
> Consequently, computing tag by address offset should also refer to the
> same stride.
>
> As suggested, sizeof_utp_transfer_cmd_desc() is further renamed to
> ufshcd_get_ucd_size().
This patch includes two changes:
(1) a bug fix.
(2) a name change for a function.
A Linux kernel patch should include only one logical change. Please
split this patch.
Thanks,
Bart.