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authorDavid S. Miller <davem@davemloft.net>2008-12-02 19:50:27 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-02 19:50:27 -0800
commitaa2ba5f1082dc705745899584aac8416d710c056 (patch)
treebde0bf4aff036c6bac19a0212194ae1092afb3c9 /drivers/media/video/em28xx/em28xx-core.c
parent68024541e2e5a8f35e281daaa5068a29e2a538a5 (diff)
parentf6f7b52e2f6149d2ee365717afff315b05720162 (diff)
downloadop-kernel-dev-aa2ba5f1082dc705745899584aac8416d710c056.zip
op-kernel-dev-aa2ba5f1082dc705745899584aac8416d710c056.tar.gz
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/ixgbe/ixgbe_main.c drivers/net/smc91x.c
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-core.c')
-rw-r--r--drivers/media/video/em28xx/em28xx-core.c58
1 files changed, 36 insertions, 22 deletions
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c
index 5d837c1..15e2b52 100644
--- a/drivers/media/video/em28xx/em28xx-core.c
+++ b/drivers/media/video/em28xx/em28xx-core.c
@@ -69,19 +69,33 @@ int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
int ret, byte;
if (dev->state & DEV_DISCONNECTED)
- return(-ENODEV);
+ return -ENODEV;
+
+ if (len > URB_MAX_CTRL_SIZE)
+ return -EINVAL;
em28xx_regdbg("req=%02x, reg=%02x ", req, reg);
+ mutex_lock(&dev->ctrl_urb_lock);
ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), req,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0x0000, reg, buf, len, HZ);
+ 0x0000, reg, dev->urb_buf, len, HZ);
+ if (ret < 0) {
+ if (reg_debug)
+ printk(" failed!\n");
+ mutex_unlock(&dev->ctrl_urb_lock);
+ return ret;
+ }
+
+ if (len)
+ memcpy(buf, dev->urb_buf, len);
+
+ mutex_unlock(&dev->ctrl_urb_lock);
if (reg_debug) {
- printk(ret < 0 ? " failed!\n" : "%02x values: ", ret);
+ printk("%02x values: ", ret);
for (byte = 0; byte < len; byte++)
printk(" %02x", (unsigned char)buf[byte]);
-
printk("\n");
}
@@ -102,16 +116,20 @@ int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg)
em28xx_regdbg("req=%02x, reg=%02x:", req, reg);
+ mutex_lock(&dev->ctrl_urb_lock);
ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), req,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0x0000, reg, &val, 1, HZ);
-
- if (reg_debug)
- printk(ret < 0 ? " failed!\n" :
- "%02x\n", (unsigned char) val);
+ 0x0000, reg, dev->urb_buf, 1, HZ);
+ val = dev->urb_buf[0];
+ mutex_unlock(&dev->ctrl_urb_lock);
- if (ret < 0)
+ if (ret < 0) {
+ printk(" failed!\n");
return ret;
+ }
+
+ if (reg_debug)
+ printk("%02x\n", (unsigned char) val);
return val;
}
@@ -130,19 +148,13 @@ int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
{
int ret;
- /*usb_control_msg seems to expect a kmalloced buffer */
- unsigned char *bufs;
-
if (dev->state & DEV_DISCONNECTED)
return -ENODEV;
- if (len < 1)
+ if ((len < 1) || (len > URB_MAX_CTRL_SIZE))
return -EINVAL;
- bufs = kmalloc(len, GFP_KERNEL);
-
em28xx_regdbg("req=%02x reg=%02x:", req, reg);
-
if (reg_debug) {
int i;
for (i = 0; i < len; ++i)
@@ -150,16 +162,16 @@ int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
printk("\n");
}
- if (!bufs)
- return -ENOMEM;
- memcpy(bufs, buf, len);
+ mutex_lock(&dev->ctrl_urb_lock);
+ memcpy(dev->urb_buf, buf, len);
ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), req,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0x0000, reg, bufs, len, HZ);
+ 0x0000, reg, dev->urb_buf, len, HZ);
+ mutex_unlock(&dev->ctrl_urb_lock);
+
if (dev->wait_after_write)
msleep(dev->wait_after_write);
- kfree(bufs);
return ret;
}
@@ -270,6 +282,8 @@ static int em28xx_set_audio_source(struct em28xx *dev)
break;
case EM28XX_AMUX_LINE_IN:
input = EM28XX_AUDIO_SRC_LINE;
+ video = disable;
+ line = enable;
break;
case EM28XX_AMUX_AC97_VIDEO:
input = EM28XX_AUDIO_SRC_LINE;
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