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V4L/DVB (5449): M920x: add error messages for debugging purposes
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>
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7d1d4e6c58
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59069e53a2
1 changed files with 8 additions and 2 deletions
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@ -47,11 +47,15 @@ static inline int m9206_read(struct usb_device *udev, u8 request, u16 value,\
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ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
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request, USB_TYPE_VENDOR | USB_DIR_IN,
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value, index, data, size, 2000);
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if (ret < 0)
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if (ret < 0) {
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printk(KERN_INFO "m920x_read = error: %d\n", ret);
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return ret;
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}
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if (ret != size)
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if (ret != size) {
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deb_rc("m920x_read = no data\n");
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return -EIO;
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}
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return 0;
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}
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@ -64,6 +68,7 @@ static inline int m9206_write(struct usb_device *udev, u8 request,
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ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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request, USB_TYPE_VENDOR | USB_DIR_OUT,
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value, index, NULL, 0, 2000);
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return ret;
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}
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@ -323,6 +328,7 @@ static int m9206_firmware_download(struct usb_device *udev,
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i += size;
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}
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if (i != fw->size) {
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deb_rc("bad firmware file!\n");
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ret = -EINVAL;
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goto done;
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}
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