[media] mn88473: implement firmware parity check (0f21ac7f) · Commits · 戴 / test

drivers/staging/media/mn88473/mn88473.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -192,6 +192,7 @@ static int mn88473_init(struct dvb_frontend *fe)
		int ret, len, remaining;
		const struct firmware *fw = NULL;
		u8 *fw_file = MN88473_FIRMWARE;
		unsigned int tmp;

		dev_dbg(&client->dev, "\n");

		@@ -227,6 +228,20 @@ static int mn88473_init(struct dvb_frontend *fe)
		}
		}

		/* parity check of firmware */
		ret = regmap_read(dev->regmap[0], 0xf8, &tmp);
		if (ret) {
		dev_err(&client->dev,
		"parity reg read failed=%d\n", ret);
		goto err;
		}
		if (tmp & 0x10) {
		dev_err(&client->dev,
		"firmware parity check failed=0x%x\n", tmp);
		goto err;
		}
		dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);

		ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
		if (ret)
		goto err;