From: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
To: Larry Finger <Larry.Finger@lwfinger.net>,
Phillip Potter <phil@philpotter.co.uk>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Pavel Skripkin <paskripkin@gmail.com>,
linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org,
David Laight <david.Laight@aculab.com>,
Dan Carpenter <dan.carpenter@oracle.com>,
Martin Kaiser <martin@kaiser.cx>
Cc: "Fabio M . De Francesco" <fmdefrancesco@gmail.com>
Subject: [PATCH v8 18/19] staging: r8188eu: remove shared buffer for USB requests
Date: Mon, 20 Sep 2021 01:53:55 +0200 [thread overview]
Message-ID: <20210919235356.4151-19-fmdefrancesco@gmail.com> (raw)
In-Reply-To: <20210919235356.4151-1-fmdefrancesco@gmail.com>
From: Pavel Skripkin <paskripkin@gmail.com>
Remove the shared buffer for USB requests because it is not necessary
and use a local on stack variable since the new Core USB API does not
have the constraints of usb_control_msg().
Co-developed-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
---
drivers/staging/r8188eu/hal/usb_ops_linux.c | 8 ++------
drivers/staging/r8188eu/include/drv_types.h | 3 ---
drivers/staging/r8188eu/os_dep/usb_intf.c | 14 +-------------
3 files changed, 3 insertions(+), 22 deletions(-)
diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
index 2552450ab152..75500c28d6e6 100644
--- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
+++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
@@ -14,15 +14,13 @@ static int usb_read(struct intf_hdl *intfhdl, u16 value, void *data, u8 size)
struct dvobj_priv *dvobjpriv = adapter_to_dvobj(adapt);
struct usb_device *udev = dvobjpriv->pusbdev;
int status;
- u8 *io_buf; /* Pointer to I/O buffer */
+ u8 io_buf[4];
mutex_lock(&dvobjpriv->usb_vendor_req_mutex);
if (adapt->bSurpriseRemoved || adapt->pwrctrlpriv.pnp_bstop_trx)
return -EPERM;
- io_buf = dvobjpriv->usb_vendor_req_buf;
-
status = usb_control_msg_recv(udev, 0, REALTEK_USB_VENQT_CMD_REQ,
REALTEK_USB_VENQT_READ, value,
REALTEK_USB_VENQT_CMD_IDX, io_buf,
@@ -67,15 +65,13 @@ static int usb_write(struct intf_hdl *intfhdl, u16 value, void *data, u8 size)
struct dvobj_priv *dvobjpriv = adapter_to_dvobj(adapt);
struct usb_device *udev = dvobjpriv->pusbdev;
int status;
- u8 *io_buf; /* Pointer to I/O buffer */
+ u8 io_buf[VENDOR_CMD_MAX_DATA_LEN];
mutex_lock(&dvobjpriv->usb_vendor_req_mutex);
if (adapt->bSurpriseRemoved || adapt->pwrctrlpriv.pnp_bstop_trx)
return -EPERM;
- io_buf = dvobjpriv->usb_vendor_req_buf;
-
memcpy(io_buf, data, size);
status = usb_control_msg_send(udev, 0, REALTEK_USB_VENQT_CMD_REQ,
REALTEK_USB_VENQT_WRITE, value,
diff --git a/drivers/staging/r8188eu/include/drv_types.h b/drivers/staging/r8188eu/include/drv_types.h
index 626c6273be6f..7907dd7b5bf0 100644
--- a/drivers/staging/r8188eu/include/drv_types.h
+++ b/drivers/staging/r8188eu/include/drv_types.h
@@ -170,9 +170,6 @@ struct dvobj_priv {
struct semaphore usb_suspend_sema;
struct mutex usb_vendor_req_mutex;
- u8 *usb_alloc_vendor_req_buf;
- u8 *usb_vendor_req_buf;
-
struct usb_interface *pusbintf;
struct usb_device *pusbdev;
diff --git a/drivers/staging/r8188eu/os_dep/usb_intf.c b/drivers/staging/r8188eu/os_dep/usb_intf.c
index 11a584cbe9d8..5ab42d55207f 100644
--- a/drivers/staging/r8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/r8188eu/os_dep/usb_intf.c
@@ -75,24 +75,12 @@ static struct rtw_usb_drv *usb_drv = &rtl8188e_usb_drv;
static u8 rtw_init_intf_priv(struct dvobj_priv *dvobj)
{
- u8 rst = _SUCCESS;
-
mutex_init(&dvobj->usb_vendor_req_mutex);
-
- dvobj->usb_alloc_vendor_req_buf = kzalloc(MAX_USB_IO_CTL_SIZE, GFP_KERNEL);
- if (!dvobj->usb_alloc_vendor_req_buf) {
- DBG_88E("alloc usb_vendor_req_buf failed... /n");
- rst = _FAIL;
- goto exit;
- }
- dvobj->usb_vendor_req_buf = (u8 *)N_BYTE_ALIGMENT((size_t)(dvobj->usb_alloc_vendor_req_buf), ALIGNMENT_UNIT);
-exit:
- return rst;
+ return _SUCCESS;
}
static void rtw_deinit_intf_priv(struct dvobj_priv *dvobj)
{
- kfree(dvobj->usb_alloc_vendor_req_buf);
mutex_destroy(&dvobj->usb_vendor_req_mutex);
}
--
2.33.0
next prev parent reply other threads:[~2021-09-19 23:56 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-19 23:53 [PATCH v8 00/19] staging: r8188eu: shorten and simplify calls chains Fabio M. De Francesco
2021-09-19 23:53 ` [PATCH v8 01/19] staging: r8188eu: clean up symbols usbctrl_vendorreq() Fabio M. De Francesco
2021-09-20 11:46 ` Greg Kroah-Hartman
2021-09-19 23:53 ` [PATCH v8 02/19] staging: r8188eu: reorder declarations in usbctrl_vendorreq() Fabio M. De Francesco
2021-09-19 23:53 ` [PATCH v8 03/19] staging: r8188eu: remove unnecessary test " Fabio M. De Francesco
2021-09-20 11:47 ` Greg Kroah-Hartman
2021-09-19 23:53 ` [PATCH v8 04/19] staging: r8188eu: reorder comments " Fabio M. De Francesco
2021-09-20 11:48 ` Greg Kroah-Hartman
2021-09-19 23:53 ` [PATCH v8 05/19] staging: r8188eu: remove unnedeed parentheses " Fabio M. De Francesco
2021-09-19 23:53 ` [PATCH v8 06/19] staging: r8188eu: remove unnecessary space " Fabio M. De Francesco
2021-09-19 23:53 ` [PATCH v8 07/19] staging: r8188eu: remove unnecessary comment " Fabio M. De Francesco
2021-09-20 11:48 ` Greg Kroah-Hartman
2021-09-19 23:53 ` [PATCH v8 08/19] staging: r8188eu: fix grammar mistake " Fabio M. De Francesco
2021-09-20 11:49 ` Greg Kroah-Hartman
2021-09-19 23:53 ` [PATCH v8 09/19] staging: r8188eu: remove unnecessary braces " Fabio M. De Francesco
2021-09-20 11:49 ` Greg Kroah-Hartman
2021-09-19 23:53 ` [PATCH v8 10/19] staging: r8188eu: rename symbols in rtw_read*() and rtw_write*() Fabio M. De Francesco
2021-09-20 11:50 ` Greg Kroah-Hartman
2021-09-19 23:53 ` [PATCH v8 11/19] staging: r8188eu: remove unnecessary casts from rtw_{read,write}*() Fabio M. De Francesco
2021-09-19 23:53 ` [PATCH v8 12/19] staging: r8188eu: change the type of a variable in rtw_write16() Fabio M. De Francesco
2021-09-20 11:50 ` Greg Kroah-Hartman
2021-09-19 23:53 ` [PATCH v8 13/19] staging: r8188eu: remove an unneeded buffer from rtw_writeN() Fabio M. De Francesco
2021-09-19 23:53 ` [PATCH v8 14/19] staging: r8188eu: remove an unnecessary bit AND " Fabio M. De Francesco
2021-09-19 23:53 ` [PATCH v8 15/19] staging: r8188eu: change the type of a variable in rtw_read16() Fabio M. De Francesco
2021-09-20 11:51 ` Greg Kroah-Hartman
2021-09-20 11:56 ` Dan Carpenter
2021-09-20 13:03 ` Fabio M. De Francesco
2021-09-20 13:10 ` Dan Carpenter
2021-09-20 16:17 ` Fabio M. De Francesco
2021-09-20 19:01 ` Dan Carpenter
2021-09-20 19:54 ` Fabio M. De Francesco
2021-09-21 5:35 ` Dan Carpenter
2021-09-19 23:53 ` [PATCH v8 16/19] staging: r8188eu: call the new usb_read() from rtw_read{8,16,32}() Fabio M. De Francesco
2021-09-19 23:53 ` [PATCH v8 17/19] staging: r8188eu: call the new usb_write() from rtw_write{8,16,32,N}() Fabio M. De Francesco
2021-09-19 23:53 ` Fabio M. De Francesco [this message]
2021-09-19 23:53 ` [PATCH v8 19/19] staging: r8188eu: remove usb_vendor_req_mutex Fabio M. De Francesco
2021-09-20 11:55 ` [PATCH v8 00/19] staging: r8188eu: shorten and simplify calls chains Greg Kroah-Hartman
2021-09-20 13:44 ` Fabio M. De Francesco
2021-09-20 14:06 ` Greg Kroah-Hartman
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