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Commit ee5d1b7f authored by Christian Krafft's avatar Christian Krafft Committed by Paul Mackerras
Browse files

[POWERPC] Fix PMI breakage in cbe_cbufreq driver 



The recent change to cell_defconfig to enable cpufreq on Cell exposed
the fact that the cbe_cpufreq driver currently needs the PMI interface
code to compile, but Kconfig doesn't make sure that the PMI interface
code gets built if cbe_cpufreq is enabled.

In fact cbe_cpufreq can work without PMI, so this ifdefs out the code
that deals with PMI.  This is a minimal solution for 2.6.22; a more
comprehensive solution will be merged for 2.6.23.

Signed-off-by: default avatarChristian Krafft <krafft@de.ibm.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 86affd5a

arch/powerpc/platforms/cell/cbe_cpufreq.c

+10 −5
Original line number Diff line number Diff line
@@ -74,6 +74,7 @@ static unsigned int pmi_frequency_limit = 0; 


static struct of_device *pmi_dev;



#ifdef CONFIG_PPC_PMI

static int set_pmode_pmi(int cpu, unsigned int pmode)

{

	int ret;
@@ -102,7 +103,7 @@ static int set_pmode_pmi(int cpu, unsigned int pmode) 
#endif

	return ret;

}



#endif



static int get_pmode(int cpu)

{
@@ -157,9 +158,11 @@ static int set_pmode_reg(int cpu, unsigned int pmode) 
}



static int set_pmode(int cpu, unsigned int slow_mode) {

#ifdef CONFIG_PPC_PMI

	if (pmi_dev)

		return set_pmode_pmi(cpu, slow_mode);

	else

#endif

		return set_pmode_reg(cpu, slow_mode);

}
@@ -323,26 +326,28 @@ static struct cpufreq_driver cbe_cpufreq_driver = { 


static int __init cbe_cpufreq_init(void)

{

#ifdef CONFIG_PPC_PMI

	struct device_node *np;



#endif

	if (!machine_is(cell))

		return -ENODEV;



#ifdef CONFIG_PPC_PMI

	np = of_find_node_by_type(NULL, "ibm,pmi");



	pmi_dev = of_find_device_by_node(np);



	if (pmi_dev)

		pmi_register_handler(pmi_dev, &cbe_pmi_handler);



#endif

	return cpufreq_register_driver(&cbe_cpufreq_driver);

}



static void __exit cbe_cpufreq_exit(void)

{

#ifdef CONFIG_PPC_PMI

	if (pmi_dev)

		pmi_unregister_handler(pmi_dev, &cbe_pmi_handler);



#endif

	cpufreq_unregister_driver(&cbe_cpufreq_driver);

}