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ARM: OMAP2+: Powerdomain: Fix unchecked dereference of arch_pwrdm

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Commit 'cd8abed' "ARM: OMAP2+: Powerdomain: Remove the need to
always have a voltdm associated to a pwrdm" leads to the following
Smatch complaint:

arch/arm/mach-omap2/powerdomain.c:131 _pwrdm_register()
	 error: we previously assumed 'arch_pwrdm' could be null (see line 105)

So, fix the unchecked dereference of arch_pwrdm.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Rajendra Nayak 2013-12-02 11:38:14 -08:00 committed by Tony Lindgren
parent 33e9c392ad
commit 1cfc4bdd51
1 changed files with 2 additions and 1 deletions
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3
arch/arm/mach-omap2/powerdomain.c
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@ -128,7 +128,8 @@ static int _pwrdm_register(struct powerdomain *pwrdm)
for (i = 0; i < pwrdm->banks; i++)
pwrdm->ret_mem_off_counter[i] = 0;
arch_pwrdm->pwrdm_wait_transition(pwrdm);
if (arch_pwrdm && arch_pwrdm->pwrdm_wait_transition)
arch_pwrdm->pwrdm_wait_transition(pwrdm);
pwrdm->state = pwrdm_read_pwrst(pwrdm);
pwrdm->state_counter[pwrdm->state] = 1;