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Commit 307e95c9 authored by Benjamin Larsson's avatar Benjamin Larsson Committed by Mauro Carvalho Chehab
Browse files

[media] mn88472: implement firmware parity check 



Signed-off-by: default avatarBenjamin Larsson <benjamin@southpole.se>
Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent ba6d6d8a

drivers/staging/media/mn88472/mn88472.c

+15 −0
Original line number Diff line number Diff line
@@ -258,6 +258,7 @@ static int mn88472_init(struct dvb_frontend *fe) 
	int ret, len, remaining;

	const struct firmware *fw = NULL;

	u8 *fw_file = MN88472_FIRMWARE;

	unsigned int csum;



	dev_dbg(&client->dev, "\n");
@@ -303,6 +304,20 @@ static int mn88472_init(struct dvb_frontend *fe) 
		}

	}



	/* parity check of firmware */

	ret = regmap_read(dev->regmap[0], 0xf8, &csum);

	if (ret) {

		dev_err(&client->dev,

				"parity reg read failed=%d\n", ret);

		goto err;

	}

	if (csum & 0x10) {

		dev_err(&client->dev,

				"firmware parity check failed=0x%x\n", csum);

		goto err;

	}

	dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", csum);



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

	if (ret)

		goto firmware_release;