Hi, I'm working some new Smatch stuff and sending bug reports for old
code. -Dan
---
This is a semi-automatic email about new static checker warnings.
The patch a7d44baaed0a: "[media] cx23885-dvb: Remove a dirty hack
that would require DVBv3" from Dec 26, 2011, leads to the following
Smatch complaint:
drivers/media/video/cx23885/cx23885-dvb.c:137 cx23885_dvb_gate_ctrl()
error: we previously assumed 'fe->dvb.frontend' could be null (see line 130)
drivers/media/video/cx23885/cx23885-dvb.c
129
130 if (fe && fe->dvb.frontend && fe->dvb.frontend->ops.i2c_gate_ctrl)
^^^^^^^^^^^^^^^^^^^^^^
Old check.
131 fe->dvb.frontend->ops.i2c_gate_ctrl(fe->dvb.frontend, open);
132
133 /*
134 * FIXME: Improve this path to avoid calling the
135 * cx23885_dvb_set_frontend() every time it passes here.
136 */
137 cx23885_dvb_set_frontend(fe->dvb.frontend);
^^^^^^^^^^^^^^^^
New call to cx23885_dvb_set_frontend(). If "fe->dvb.frontend" is NULL
then we will oops in cx23885_dvb_set_frontend(). Also if "fe" is NULL
we'll oops right here.
138 }
139
regards,
dan carpenter
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