diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2012-05-09 12:13:29 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-14 09:43:01 -0300 |
| commit | cb0988cb82f216cf7e38c374d6eaf3131debf031 (patch) | |
| tree | aaabfd21e0138d2048bf97547ee4f0a14e613a4f /drivers/media/video/gspca | |
| parent | a8a478601ac1d8877e23cb832fe4b44042ce6f20 (diff) | |
[media] gscpa_pac207: use usb_err for error handling
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/gspca')
| -rw-r--r-- | drivers/media/video/gspca/pac207.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/drivers/media/video/gspca/pac207.c b/drivers/media/video/gspca/pac207.c index 3844c49f269..c70b258a0ae 100644 --- a/drivers/media/video/gspca/pac207.c +++ b/drivers/media/video/gspca/pac207.c @@ -167,39 +167,44 @@ static const __u8 pac207_sensor_init[][8] = { {0x32, 0x00, 0x96, 0x00, 0xa2, 0x02, 0xaf, 0x00}, }; -static int pac207_write_regs(struct gspca_dev *gspca_dev, u16 index, +static void pac207_write_regs(struct gspca_dev *gspca_dev, u16 index, const u8 *buffer, u16 length) { struct usb_device *udev = gspca_dev->dev; int err; + if (gspca_dev->usb_err < 0) + return; + memcpy(gspca_dev->usb_buf, buffer, length); err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, 0x00, index, gspca_dev->usb_buf, length, PAC207_CTRL_TIMEOUT); - if (err < 0) + if (err < 0) { pr_err("Failed to write registers to index 0x%04X, error %d\n", index, err); - - return err; + gspca_dev->usb_err = err; + } } - -static int pac207_write_reg(struct gspca_dev *gspca_dev, u16 index, u16 value) +static void pac207_write_reg(struct gspca_dev *gspca_dev, u16 index, u16 value) { struct usb_device *udev = gspca_dev->dev; int err; + if (gspca_dev->usb_err < 0) + return; + err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, value, index, NULL, 0, PAC207_CTRL_TIMEOUT); - if (err) + if (err) { pr_err("Failed to write a register (index 0x%04X, value 0x%02X, error %d)\n", index, value, err); - - return err; + gspca_dev->usb_err = err; + } } static int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index) @@ -207,6 +212,9 @@ static int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index) struct usb_device *udev = gspca_dev->dev; int res; + if (gspca_dev->usb_err < 0) + return 0; + res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, 0x00, index, @@ -214,7 +222,8 @@ static int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index) if (res < 0) { pr_err("Failed to read a register (index 0x%04X, error %d)\n", index, res); - return res; + gspca_dev->usb_err = res; + return 0; } return gspca_dev->usb_buf[0]; @@ -264,7 +273,7 @@ static int sd_init(struct gspca_dev *gspca_dev) * Bit_2=Compression test mode enable */ pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */ - return 0; + return gspca_dev->usb_err; } /* -- start the camera -- */ @@ -308,7 +317,7 @@ static int sd_start(struct gspca_dev *gspca_dev) sd->sof_read = 0; sd->autogain_ignore_frames = 0; atomic_set(&sd->avg_lum, -1); - return 0; + return gspca_dev->usb_err; } static void sd_stopN(struct gspca_dev *gspca_dev) |