re: w1: Fix w1_bq27000

[Dan Carpenter]

Hello NeilBrown,

This is a semi-automatic email about new static checker warnings.

The patch 9f3519d2ed26: "w1: Fix w1_bq27000" from Feb 15, 2012, leads 
to the following Smatch complaint:

drivers/w1/slaves/w1_bq27000.c:48 w1_bq27000_read()
	 warn: variable dereferenced before check 'dev' (see line 46)

drivers/w1/slaves/w1_bq27000.c
    45		u8 val;
    46		struct w1_slave *sl = container_of(dev->parent, struct w1_slave, dev);
                                                   ^^^^^^^^^^^
New dereference.

    47	
    48		if (!dev)
                     ^^^
Old check.

    49			return 0;
    50	

regards,
dan carpenter

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