Signed-off-by: Benjamin Larsson <benjamin@xxxxxxxxxxxx>
---
drivers/staging/media/mn88472/mn88472.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/staging/media/mn88472/mn88472.c b/drivers/staging/media/mn88472/mn88472.c
index df7dbe9..1df85a7 100644
--- a/drivers/staging/media/mn88472/mn88472.c
+++ b/drivers/staging/media/mn88472/mn88472.c
@@ -294,6 +294,7 @@ 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");
@@ -346,6 +347,20 @@ 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 err;
--
1.9.1
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