From 4848ea77e0e8131fe928a11e15dc2d5c47862bb5 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 14 May 2012 15:21:25 -0300 Subject: [PATCH] [media] gscpa_sonixb: Use usb_err for error handling Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sonixb.c | 161 +++++++++++++++++++------------------ 1 file changed, 81 insertions(+), 80 deletions(-) diff --git a/drivers/media/video/gspca/sonixb.c b/drivers/media/video/gspca/sonixb.c index e2bdf8f..65fa4f2f 100644 --- a/drivers/media/video/gspca/sonixb.c +++ b/drivers/media/video/gspca/sonixb.c @@ -550,7 +550,12 @@ SENS(initTas5130, tas5130_sensor_init, F_GAIN, static void reg_r(struct gspca_dev *gspca_dev, __u16 value) { - usb_control_msg(gspca_dev->dev, + int res; + + if (gspca_dev->usb_err < 0) + return; + + res = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0), 0, /* request */ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, @@ -558,6 +563,12 @@ static void reg_r(struct gspca_dev *gspca_dev, 0, /* index */ gspca_dev->usb_buf, 1, 500); + + if (res < 0) { + dev_err(gspca_dev->v4l2_dev.dev, + "Error reading register %02x: %d\n", value, res); + gspca_dev->usb_err = res; + } } static void reg_w(struct gspca_dev *gspca_dev, @@ -565,14 +576,13 @@ static void reg_w(struct gspca_dev *gspca_dev, const __u8 *buffer, int len) { -#ifdef GSPCA_DEBUG - if (len > USB_BUF_SZ) { - PDEBUG(D_ERR|D_PACK, "reg_w: buffer overflow"); + int res; + + if (gspca_dev->usb_err < 0) return; - } -#endif + memcpy(gspca_dev->usb_buf, buffer, len); - usb_control_msg(gspca_dev->dev, + res = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), 0x08, /* request */ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, @@ -580,30 +590,48 @@ static void reg_w(struct gspca_dev *gspca_dev, 0, /* index */ gspca_dev->usb_buf, len, 500); + + if (res < 0) { + dev_err(gspca_dev->v4l2_dev.dev, + "Error writing register %02x: %d\n", value, res); + gspca_dev->usb_err = res; + } } -static int i2c_w(struct gspca_dev *gspca_dev, const __u8 *buffer) +static void i2c_w(struct gspca_dev *gspca_dev, const __u8 *buffer) { int retry = 60; + if (gspca_dev->usb_err < 0) + return; + /* is i2c ready */ reg_w(gspca_dev, 0x08, buffer, 8); while (retry--) { + if (gspca_dev->usb_err < 0) + return; msleep(10); reg_r(gspca_dev, 0x08); if (gspca_dev->usb_buf[0] & 0x04) { - if (gspca_dev->usb_buf[0] & 0x08) - return -1; - return 0; + if (gspca_dev->usb_buf[0] & 0x08) { + dev_err(gspca_dev->v4l2_dev.dev, + "i2c write error\n"); + gspca_dev->usb_err = -EIO; + } + return; } } - return -1; + + dev_err(gspca_dev->v4l2_dev.dev, "i2c write timeout\n"); + gspca_dev->usb_err = -EIO; } static void i2c_w_vector(struct gspca_dev *gspca_dev, const __u8 buffer[][8], int len) { for (;;) { + if (gspca_dev->usb_err < 0) + return; reg_w(gspca_dev, 0x08, *buffer, 8); len -= 8; if (len <= 0) @@ -625,10 +653,9 @@ static void setbrightness(struct gspca_dev *gspca_dev) /* change reg 0x06 */ i2cOV[1] = sensor_data[sd->sensor].sensor_addr; i2cOV[3] = sd->ctrls[BRIGHTNESS].val; - if (i2c_w(gspca_dev, i2cOV) < 0) - goto err; + i2c_w(gspca_dev, i2cOV); break; - } + } case SENSOR_PAS106: case SENSOR_PAS202: { __u8 i2cpbright[] = @@ -650,16 +677,13 @@ static void setbrightness(struct gspca_dev *gspca_dev) } else i2cpbright[4] = sd->ctrls[BRIGHTNESS].val - 127; - if (i2c_w(gspca_dev, i2cpbright) < 0) - goto err; - if (i2c_w(gspca_dev, i2cpdoit) < 0) - goto err; + i2c_w(gspca_dev, i2cpbright); + i2c_w(gspca_dev, i2cpdoit); + break; + } + default: break; - } } - return; -err: - PDEBUG(D_ERR, "i2c error brightness"); } static void setsensorgain(struct gspca_dev *gspca_dev) @@ -676,20 +700,18 @@ static void setsensorgain(struct gspca_dev *gspca_dev) i2c[4] = 0x3f - (gain / 4); i2c[5] = 0x3f - (gain / 4); - if (i2c_w(gspca_dev, i2c) < 0) - goto err; + i2c_w(gspca_dev, i2c); break; - } + } case SENSOR_TAS5110C: case SENSOR_TAS5130CXX: { __u8 i2c[] = {0x30, 0x11, 0x02, 0x20, 0x70, 0x00, 0x00, 0x10}; i2c[4] = 255 - gain; - if (i2c_w(gspca_dev, i2c) < 0) - goto err; + i2c_w(gspca_dev, i2c); break; - } + } case SENSOR_TAS5110D: { __u8 i2c[] = { 0xb0, 0x61, 0x02, 0x00, 0x10, 0x00, 0x00, 0x17 }; @@ -703,11 +725,9 @@ static void setsensorgain(struct gspca_dev *gspca_dev) i2c[3] |= (gain & 0x04) << 3; i2c[3] |= (gain & 0x02) << 5; i2c[3] |= (gain & 0x01) << 7; - if (i2c_w(gspca_dev, i2c) < 0) - goto err; + i2c_w(gspca_dev, i2c); break; - } - + } case SENSOR_OV6650: gain >>= 1; /* fall thru */ @@ -716,10 +736,9 @@ static void setsensorgain(struct gspca_dev *gspca_dev) i2c[1] = sensor_data[sd->sensor].sensor_addr; i2c[3] = gain >> 2; - if (i2c_w(gspca_dev, i2c) < 0) - goto err; + i2c_w(gspca_dev, i2c); break; - } + } case SENSOR_PAS106: case SENSOR_PAS202: { __u8 i2cpgain[] = @@ -743,18 +762,14 @@ static void setsensorgain(struct gspca_dev *gspca_dev) i2cpcolorgain[5] = gain >> 4; i2cpcolorgain[6] = gain >> 4; - if (i2c_w(gspca_dev, i2cpgain) < 0) - goto err; - if (i2c_w(gspca_dev, i2cpcolorgain) < 0) - goto err; - if (i2c_w(gspca_dev, i2cpdoit) < 0) - goto err; + i2c_w(gspca_dev, i2cpgain); + i2c_w(gspca_dev, i2cpcolorgain); + i2c_w(gspca_dev, i2cpdoit); + break; + } + default: break; - } } - return; -err: - PDEBUG(D_ERR, "i2c error gain"); } static void setgain(struct gspca_dev *gspca_dev) @@ -802,10 +817,9 @@ static void setexposure(struct gspca_dev *gspca_dev) i2c[3] = reg >> 8; i2c[4] = reg & 0xff; - if (i2c_w(gspca_dev, i2c) != 0) - goto err; + i2c_w(gspca_dev, i2c); break; - } + } case SENSOR_TAS5110C: case SENSOR_TAS5110D: { /* register 19's high nibble contains the sn9c10x clock divider @@ -816,7 +830,7 @@ static void setexposure(struct gspca_dev *gspca_dev) reg = (reg << 4) | 0x0b; reg_w(gspca_dev, 0x19, ®, 1); break; - } + } case SENSOR_OV6650: case SENSOR_OV7630: { /* The ov6650 / ov7630 have 2 registers which both influence @@ -884,12 +898,11 @@ static void setexposure(struct gspca_dev *gspca_dev) if (sd->reg11 == reg11) i2c[0] = 0xa0; - if (i2c_w(gspca_dev, i2c) == 0) + i2c_w(gspca_dev, i2c); + if (gspca_dev->usb_err == 0) sd->reg11 = reg11; - else - goto err; break; - } + } case SENSOR_PAS202: { __u8 i2cpframerate[] = {0xb0, 0x40, 0x04, 0x00, 0x00, 0x00, 0x00, 0x16}; @@ -923,14 +936,11 @@ static void setexposure(struct gspca_dev *gspca_dev) i2cpframerate[3] = framerate_ctrl >> 6; i2cpframerate[4] = framerate_ctrl & 0x3f; - if (i2c_w(gspca_dev, i2cpframerate) < 0) - goto err; - if (i2c_w(gspca_dev, i2cpexpo) < 0) - goto err; - if (i2c_w(gspca_dev, i2cpdoit) < 0) - goto err; + i2c_w(gspca_dev, i2cpframerate); + i2c_w(gspca_dev, i2cpexpo); + i2c_w(gspca_dev, i2cpdoit); break; - } + } case SENSOR_PAS106: { __u8 i2cpframerate[] = {0xb1, 0x40, 0x03, 0x00, 0x00, 0x00, 0x00, 0x14}; @@ -955,27 +965,21 @@ static void setexposure(struct gspca_dev *gspca_dev) i2cpframerate[3] = framerate_ctrl >> 4; i2cpframerate[4] = framerate_ctrl & 0x0f; - if (i2c_w(gspca_dev, i2cpframerate) < 0) - goto err; - if (i2c_w(gspca_dev, i2cpexpo) < 0) - goto err; - if (i2c_w(gspca_dev, i2cpdoit) < 0) - goto err; + i2c_w(gspca_dev, i2cpframerate); + i2c_w(gspca_dev, i2cpexpo); + i2c_w(gspca_dev, i2cpdoit); + break; + } + default: break; - } } - return; -err: - PDEBUG(D_ERR, "i2c error exposure"); } static void setfreq(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; - switch (sd->sensor) { - case SENSOR_OV6650: - case SENSOR_OV7630: { + if (sd->sensor == SENSOR_OV6650 || sd->sensor == SENSOR_OV7630) { /* Framerate adjust register for artificial light 50 hz flicker compensation, for the ov6650 this is identical to ov6630 0x2b register, see ov6630 datasheet. @@ -993,10 +997,7 @@ static void setfreq(struct gspca_dev *gspca_dev) break; } i2c[1] = sensor_data[sd->sensor].sensor_addr; - if (i2c_w(gspca_dev, i2c) < 0) - PDEBUG(D_ERR, "i2c error setfreq"); - break; - } + i2c_w(gspca_dev, i2c); } } @@ -1100,7 +1101,7 @@ static int sd_init(struct gspca_dev *gspca_dev) reg_w(gspca_dev, 0x01, &stop, 1); - return 0; + return gspca_dev->usb_err; } /* -- start the camera -- */ @@ -1245,7 +1246,7 @@ static int sd_start(struct gspca_dev *gspca_dev) sd->exp_too_high_cnt = 0; sd->exp_too_low_cnt = 0; atomic_set(&sd->avg_lum, -1); - return 0; + return gspca_dev->usb_err; } static void sd_stopN(struct gspca_dev *gspca_dev) -- 2.7.4