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V4L/DVB (5900): usbvision: fix bugs [sg]_register functions 

s_register was assigning the return code to (unsigned)reg->val, rather than
errCode, which it what it would return.  Except reg->val can't be < 0, so it
would never actually return an error.

g_register never actually put the value it read into reg->val.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
wifi-calibration
Trent Piepho 2007-07-23 06:58:31 -03:00 committed by Mauro Carvalho Chehab
parent cf784d554f
commit bc147135bc
1 changed files with 3 additions and 2 deletions
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5
drivers/media/video/usbvision/usbvision-video.c
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@ -517,6 +517,7 @@ static int vidioc_g_register (struct file *file, void *priv,
__FUNCTION__, errCode);
return errCode;
}
reg->val = errCode;
return 0;
}
@ -531,8 +532,8 @@ static int vidioc_s_register (struct file *file, void *priv,
if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
return -EINVAL;
/* NT100x has a 8-bit register space */
reg->val = (u8)usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
if (reg->val < 0) {
errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
if (errCode < 0) {
err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
__FUNCTION__, errCode);
return errCode;