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V4L/DVB (5449): M920x: add error messages for debugging purposes

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Signed-off-by: Pierre Willenbrock <pierre@pirsoft.dnsalias.org>
Signed-off-by: Aapo Tahkola <aet@rasterburn.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Pierre Willenbrock 2007-03-15 13:24:29 -03:00 committed by Mauro Carvalho Chehab
parent 7d1d4e6c58
commit 59069e53a2
1 changed files with 8 additions and 2 deletions
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10
drivers/media/dvb/dvb-usb/m920x.c
View file

@ -47,11 +47,15 @@ static inline int m9206_read(struct usb_device *udev, u8 request, u16 value,\
ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
request, USB_TYPE_VENDOR | USB_DIR_IN,
value, index, data, size, 2000);
if (ret < 0)
if (ret < 0) {
printk(KERN_INFO "m920x_read = error: %d\n", ret);
return ret;
}
if (ret != size)
if (ret != size) {
deb_rc("m920x_read = no data\n");
return -EIO;
}
return 0;
}
@ -64,6 +68,7 @@ static inline int m9206_write(struct usb_device *udev, u8 request,
ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
request, USB_TYPE_VENDOR | USB_DIR_OUT,
value, index, NULL, 0, 2000);
return ret;
}
@ -323,6 +328,7 @@ static int m9206_firmware_download(struct usb_device *udev,
i += size;
}
if (i != fw->size) {
deb_rc("bad firmware file!\n");
ret = -EINVAL;
goto done;
}