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author | David S. Miller <davem@davemloft.net> | 2008-12-02 19:50:27 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2008-12-02 19:50:27 -0800 |
commit | aa2ba5f1082dc705745899584aac8416d710c056 (patch) | |
tree | bde0bf4aff036c6bac19a0212194ae1092afb3c9 /drivers/media/video/em28xx/em28xx-core.c | |
parent | 68024541e2e5a8f35e281daaa5068a29e2a538a5 (diff) | |
parent | f6f7b52e2f6149d2ee365717afff315b05720162 (diff) | |
download | op-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.c | 58 |
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; |