V4L/DVB (10700): saa7115: don't access reg 0x87 if it is not present.
Devices like the saa7111 do not have this register, so check for this
before using it.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/saa7115.c b/drivers/media/video/saa7115.c
index a845582..b1c5f63 100644
--- a/drivers/media/video/saa7115.c
+++ b/drivers/media/video/saa7115.c
@@ -1310,11 +1310,12 @@
v4l2_dbg(1, debug, sd, "%s output\n",
enable ? "enable" : "disable");
- if (state->enable != enable) {
- state->enable = enable;
- saa711x_write(sd, R_87_I_PORT_I_O_ENA_OUT_CLK_AND_GATED,
- state->enable);
- }
+ if (state->enable == enable)
+ return 0;
+ state->enable = enable;
+ if (!saa711x_has_reg(state->ident, R_87_I_PORT_I_O_ENA_OUT_CLK_AND_GATED))
+ return 0;
+ saa711x_write(sd, R_87_I_PORT_I_O_ENA_OUT_CLK_AND_GATED, state->enable);
return 0;
}