Signed-off-by: Benjamin Larsson <benjamin@xxxxxxxxxxxx>
---
drivers/staging/media/mn88472/mn88472.c | 21 ++++++++++++++++-----
1 file changed, 16 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/media/mn88472/mn88472.c b/drivers/staging/media/mn88472/mn88472.c
index 4a00a4d..c041fbf 100644
--- a/drivers/staging/media/mn88472/mn88472.c
+++ b/drivers/staging/media/mn88472/mn88472.c
@@ -258,7 +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;
+ unsigned int tmp;
dev_dbg(&client->dev, "\n");
@@ -274,6 +274,17 @@ static int mn88472_init(struct dvb_frontend *fe)
if (ret)
goto err;
+ /* check if firmware is already running */
+ ret = regmap_read(dev->regmap[0], 0xf5, &tmp);
+ if (ret)
+ goto err;
+
+ if (!(tmp & 0x1)) {
+ dev_info(&client->dev, "firmware already running\n");
+ dev->warm = true;
+ return 0;
+ }
+
/* request the firmware, this will block and timeout */
ret = request_firmware(&fw, fw_file, &client->dev);
if (ret) {
@@ -305,18 +316,18 @@ static int mn88472_init(struct dvb_frontend *fe)
}
/* parity check of firmware */
- ret = regmap_read(dev->regmap[0], 0xf8, &csum);
+ ret = regmap_read(dev->regmap[0], 0xf8, &tmp);
if (ret) {
dev_err(&client->dev,
"parity reg read failed=%d\n", ret);
goto err;
}
- if (csum & 0x10) {
+ if (tmp & 0x10) {
dev_err(&client->dev,
- "firmware parity check failed=0x%x\n", csum);
+ "firmware parity check failed=0x%x\n", tmp);
goto err;
}
- dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", csum);
+ dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);
ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
if (ret)
--
2.1.0
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