Signed-off-by: Benjamin Larsson <[email protected]>
Reviewed-by: Antti Palosaari <[email protected]>
Signed-off-by: Antti Palosaari <[email protected]>
---
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 5070c37..4a00a4d 100644
--- a/drivers/staging/media/mn88472/mn88472.c
+++ b/drivers/staging/media/mn88472/mn88472.c
@@ -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 err;
--
2.1.0
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