Commit fcb98108 authored by Erik Andr?n's avatar Erik Andr?n Committed by Mauro Carvalho Chehab
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V4L/DVB (11461): gspca - m5602-po1030: Probe read only register at probe time 



Currently, we're probing r/w registers at probe time.
This is potentially dangerous, probe some read only registers instead.

Signed-off-by: default avatarErik Andr?n <erik.andren@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 31e1715f

drivers/media/video/gspca/m5602/m5602_po1030.c

+4 −4
Original line number Diff line number Diff line
@@ -140,7 +140,7 @@ static void po1030_dump_registers(struct sd *sd); 


int po1030_probe(struct sd *sd)

{

	u8 prod_id = 0, ver_id = 0, i;

	u8 dev_id_h = 0, dev_id_l = 0, i;

	s32 *sensor_settings;



	if (force_sensor) {
@@ -165,13 +165,13 @@ int po1030_probe(struct sd *sd) 
			m5602_write_bridge(sd, preinit_po1030[i][1], data);

	}



	if (m5602_read_sensor(sd, 0x3, &prod_id, 1))

	if (m5602_read_sensor(sd, PO1030_DEVID_H, &dev_id_h, 1))

		return -ENODEV;



	if (m5602_read_sensor(sd, 0x4, &ver_id, 1))

	if (m5602_read_sensor(sd, PO1030_DEVID_L, &dev_id_l, 1))

		return -ENODEV;



	if ((prod_id == 0x02) && (ver_id == 0xef)) {

	if ((dev_id_h == 0x10) && (dev_id_l == 0x30)) {

		info("Detected a po1030 sensor");

		goto sensor_found;

	}