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Commit 3cab7fd9 authored by Matthew Garrett's avatar Matthew Garrett Committed by Linus Torvalds
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dcdbas: export functionality for use in other drivers 



The dcdbas code allows calls to be made into the firmware on Dell systems.
 Exporting this to other drivers allows them to implement Dell-specific
functionality in a safe way.

Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
Cc: Matt Domsch <Matt_Domsch@dell.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f06295b4

drivers/firmware/dcdbas.c

+5 −4
Original line number Diff line number Diff line
@@ -238,11 +238,11 @@ static ssize_t host_control_on_shutdown_store(struct device *dev, 
}



/**

 * smi_request: generate SMI request

 * dcdbas_smi_request: generate SMI request

 *

 * Called with smi_data_lock.

 */

static int smi_request(struct smi_cmd *smi_cmd)

int dcdbas_smi_request(struct smi_cmd *smi_cmd)

{

	cpumask_t old_mask;

	int ret = 0;
@@ -309,14 +309,14 @@ static ssize_t smi_request_store(struct device *dev, 
	switch (val) {

	case 2:

		/* Raw SMI */

		ret = smi_request(smi_cmd);

		ret = dcdbas_smi_request(smi_cmd);

		if (!ret)

			ret = count;

		break;

	case 1:

		/* Calling Interface SMI */

		smi_cmd->ebx = (u32) virt_to_phys(smi_cmd->command_buffer);

		ret = smi_request(smi_cmd);

		ret = dcdbas_smi_request(smi_cmd);

		if (!ret)

			ret = count;

		break;
@@ -333,6 +333,7 @@ static ssize_t smi_request_store(struct device *dev, 
	mutex_unlock(&smi_data_lock);

	return ret;

}

EXPORT_SYMBOL(dcdbas_smi_request);



/**

 * host_control_smi: generate host control SMI

drivers/firmware/dcdbas.h

+2 −0
Original line number Diff line number Diff line
@@ -101,5 +101,7 @@ struct apm_cmd { 
	} __attribute__ ((packed)) parameters;

} __attribute__ ((packed));



int dcdbas_smi_request(struct smi_cmd *smi_cmd);



#endif /* _DCDBAS_H_ */