From 8ff63de690d74bec848caab64a86bd53c797365c Mon Sep 17 00:00:00 2001 From: Devin Heitmueller Date: Mon, 6 Aug 2012 22:47:05 -0300 Subject: [PATCH] [media] au0828: remove control buffer from send_control_msg There are no cases where a control message is ever sent to the au0828 with an actual buffer defined. Remove the reference to dev->ctrlmsg, which currently requires us to hold a mutex since it is shared with the read function. Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/au0828/au0828-core.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/media/video/au0828/au0828-core.c b/drivers/media/video/au0828/au0828-core.c index b2c4254e6ec3..65914bc421d0 100644 --- a/drivers/media/video/au0828/au0828-core.c +++ b/drivers/media/video/au0828/au0828-core.c @@ -46,7 +46,7 @@ MODULE_PARM_DESC(disable_usb_speed_check, #define _BULKPIPESIZE 0xffff static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value, - u16 index, unsigned char *cp, u16 size); + u16 index); static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value, u16 index, unsigned char *cp, u16 size); @@ -64,8 +64,7 @@ u32 au0828_readreg(struct au0828_dev *dev, u16 reg) u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val) { dprintk(8, "%s(0x%04x, 0x%02x)\n", __func__, reg, val); - return send_control_msg(dev, CMD_REQUEST_OUT, val, reg, - dev->ctrlmsg, 0); + return send_control_msg(dev, CMD_REQUEST_OUT, val, reg); } static void cmd_msg_dump(struct au0828_dev *dev) @@ -87,10 +86,10 @@ static void cmd_msg_dump(struct au0828_dev *dev) } static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value, - u16 index, unsigned char *cp, u16 size) + u16 index) { int status = -ENODEV; - mutex_lock(&dev->mutex); + if (dev->usbdev) { /* cp must be memory that has been allocated by kmalloc */ @@ -99,8 +98,7 @@ static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value, request, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - value, index, - cp, size, 1000); + value, index, NULL, 0, 1000); status = min(status, 0); @@ -110,7 +108,7 @@ static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value, } } - mutex_unlock(&dev->mutex); + return status; } -- 2.39.5