From: Dingyan Li <18500469033@163.com>
To: stern@rowland.harvard.edu, gregkh@linuxfoundation.org
Cc: linux-usb@vger.kernel.org, usb-storage@lists.one-eyed-alien.net,
linux-kernel@vger.kernel.org
Subject: [PATCH v1] usb: storage: use US_BULK_FLAG_OUT instead of constant values
Date: Sun, 20 Oct 2024 00:08:22 +0800 [thread overview]
Message-ID: <20241019160822.6862-1-18500469033@163.com> (raw)
Macros with good names offer better readability. Besides, fix an error
in the comments. In the flags, direction is in bit 7 instead of bit 0.
Signed-off-by: Dingyan Li <18500469033@163.com>
---
drivers/usb/storage/ene_ub6250.c | 8 ++++----
drivers/usb/storage/realtek_cr.c | 4 ++--
drivers/usb/storage/transport.c | 2 +-
include/linux/usb/storage.h | 2 +-
4 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/usb/storage/ene_ub6250.c b/drivers/usb/storage/ene_ub6250.c
index a4bfbecbf16c..fd46e81388d2 100644
--- a/drivers/usb/storage/ene_ub6250.c
+++ b/drivers/usb/storage/ene_ub6250.c
@@ -737,7 +737,7 @@ static int sd_scsi_write(struct us_data *us, struct scsi_cmnd *srb)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = blenByte;
- bcb->Flags = 0x00;
+ bcb->Flags = US_BULK_FLAG_OUT;
bcb->CDB[0] = 0xF0;
bcb->CDB[5] = (unsigned char)(bnByte);
bcb->CDB[4] = (unsigned char)(bnByte>>8);
@@ -1163,7 +1163,7 @@ static int ms_read_copyblock(struct us_data *us, u16 oldphy, u16 newphy,
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x200*len;
- bcb->Flags = 0x00;
+ bcb->Flags = US_BULK_FLAG_OUT;
bcb->CDB[0] = 0xF0;
bcb->CDB[1] = 0x08;
bcb->CDB[4] = (unsigned char)(oldphy);
@@ -1759,7 +1759,7 @@ static int ms_scsi_write(struct us_data *us, struct scsi_cmnd *srb)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = blenByte;
- bcb->Flags = 0x00;
+ bcb->Flags = US_BULK_FLAG_OUT;
bcb->CDB[0] = 0xF0;
bcb->CDB[1] = 0x04;
bcb->CDB[5] = (unsigned char)(bn);
@@ -1931,7 +1931,7 @@ static int ene_load_bincode(struct us_data *us, unsigned char flag)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = sd_fw->size;
- bcb->Flags = 0x00;
+ bcb->Flags = US_BULK_FLAG_OUT;
bcb->CDB[0] = 0xEF;
result = ene_send_scsi_cmd(us, FDIR_WRITE, buf, 0);
diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c
index 0c423916d7bf..54ffff86c6fa 100644
--- a/drivers/usb/storage/realtek_cr.c
+++ b/drivers/usb/storage/realtek_cr.c
@@ -212,7 +212,7 @@ static int rts51x_bulk_transport(struct us_data *us, u8 lun,
/* set up the command wrapper */
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = cpu_to_le32(buf_len);
- bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
+ bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : US_BULK_FLAG_OUT;
bcb->Tag = ++us->tag;
bcb->Lun = lun;
bcb->Length = cmd_len;
@@ -301,7 +301,7 @@ static int rts51x_bulk_transport_special(struct us_data *us, u8 lun,
/* set up the command wrapper */
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = cpu_to_le32(buf_len);
- bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
+ bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : US_BULK_FLAG_OUT;
bcb->Tag = ++us->tag;
bcb->Lun = lun;
bcb->Length = cmd_len;
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 7449e379077a..9d767f6bf722 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -1133,7 +1133,7 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us)
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = cpu_to_le32(transfer_length);
bcb->Flags = srb->sc_data_direction == DMA_FROM_DEVICE ?
- US_BULK_FLAG_IN : 0;
+ US_BULK_FLAG_IN : US_BULK_FLAG_OUT;
bcb->Tag = ++us->tag;
bcb->Lun = srb->device->lun;
if (us->fflags & US_FL_SCM_MULT_TARG)
diff --git a/include/linux/usb/storage.h b/include/linux/usb/storage.h
index 2827ce72e502..8539956bc2be 100644
--- a/include/linux/usb/storage.h
+++ b/include/linux/usb/storage.h
@@ -53,7 +53,7 @@ struct bulk_cb_wrap {
__le32 Signature; /* contains 'USBC' */
__u32 Tag; /* unique per command id */
__le32 DataTransferLength; /* size of data */
- __u8 Flags; /* direction in bit 0 */
+ __u8 Flags; /* direction in bit 7 */
__u8 Lun; /* LUN normally 0 */
__u8 Length; /* length of the CDB */
__u8 CDB[16]; /* max command */
--
2.25.1
next reply other threads:[~2024-10-19 16:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-19 16:08 Dingyan Li [this message]
2024-10-20 6:17 ` [PATCH v1] usb: storage: use US_BULK_FLAG_OUT instead of constant values Greg KH
2024-10-20 7:23 ` [PATCH v2] " Dingyan Li
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