diff options
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-i2c.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-i2c.c b/drivers/media/usb/em28xx/em28xx-i2c.c index e8eb83160d3..7e1724076ac 100644 --- a/drivers/media/usb/em28xx/em28xx-i2c.c +++ b/drivers/media/usb/em28xx/em28xx-i2c.c @@ -80,6 +80,9 @@ static int em2800_i2c_send_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len) if (ret == 0x80 + len - 1) return len; if (ret == 0x94 + len - 1) { + if (i2c_debug == 1) + em28xx_warn("R05 returned 0x%02x: I2C timeout", + ret); return -ENXIO; } if (ret < 0) { @@ -124,6 +127,9 @@ static int em2800_i2c_recv_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len) if (ret == 0x84 + len - 1) break; if (ret == 0x94 + len - 1) { + if (i2c_debug == 1) + em28xx_warn("R05 returned 0x%02x: I2C timeout", + ret); return -ENXIO; } if (ret < 0) { @@ -203,6 +209,9 @@ static int em28xx_i2c_send_bytes(struct em28xx *dev, u16 addr, u8 *buf, if (ret == 0) /* success */ return len; if (ret == 0x10) { + if (i2c_debug == 1) + em28xx_warn("I2C transfer timeout on writing to addr 0x%02x", + addr); return -ENXIO; } if (ret < 0) { @@ -263,8 +272,12 @@ static int em28xx_i2c_recv_bytes(struct em28xx *dev, u16 addr, u8 *buf, u16 len) ret); return ret; } - if (ret == 0x10) + if (ret == 0x10) { + if (i2c_debug == 1) + em28xx_warn("I2C transfer timeout on writing to addr 0x%02x", + addr); return -ENXIO; + } em28xx_warn("unknown i2c error (status=%i)\n", ret); return -ETIMEDOUT; @@ -322,8 +335,12 @@ static int em25xx_bus_B_send_bytes(struct em28xx *dev, u16 addr, u8 *buf, */ if (!ret) return len; - else if (ret > 0) + else if (ret > 0) { + if (i2c_debug == 1) + em28xx_warn("Bus B R08 returned 0x%02x: I2C timeout", + ret); return -ENXIO; + } return ret; /* @@ -373,8 +390,12 @@ static int em25xx_bus_B_recv_bytes(struct em28xx *dev, u16 addr, u8 *buf, */ if (!ret) return len; - else if (ret > 0) + else if (ret > 0) { + if (i2c_debug == 1) + em28xx_warn("Bus B R08 returned 0x%02x: I2C timeout", + ret); return -ENXIO; + } return ret; /* |