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dcdbas: export functionality for use in other drivers

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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: Matthew Garrett <mjg@redhat.com>
Cc: Matt Domsch <Matt_Domsch@dell.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matthew Garrett 2009-01-07 18:08:54 -08:00 committed by Linus Torvalds
parent f06295b44c
commit 3cab7fd964
2 changed files with 7 additions and 4 deletions
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9
drivers/firmware/dcdbas.c
View file

@ -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. * 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; cpumask_t old_mask;
int ret = 0; int ret = 0;
@ -309,14 +309,14 @@ static ssize_t smi_request_store(struct device *dev,
switch (val) { switch (val) {
case 2: case 2:
/* Raw SMI */ /* Raw SMI */
ret = smi_request(smi_cmd); ret = dcdbas_smi_request(smi_cmd);
if (!ret) if (!ret)
ret = count; ret = count;
break; break;
case 1: case 1:
/* Calling Interface SMI */ /* Calling Interface SMI */
smi_cmd->ebx = (u32) virt_to_phys(smi_cmd->command_buffer); smi_cmd->ebx = (u32) virt_to_phys(smi_cmd->command_buffer);
ret = smi_request(smi_cmd); ret = dcdbas_smi_request(smi_cmd);
if (!ret) if (!ret)
ret = count; ret = count;
break; break;
@ -333,6 +333,7 @@ out:
mutex_unlock(&smi_data_lock); mutex_unlock(&smi_data_lock);
return ret; return ret;
} }
EXPORT_SYMBOL(dcdbas_smi_request);
/** /**
* host_control_smi: generate host control SMI * host_control_smi: generate host control SMI

2
drivers/firmware/dcdbas.h
View file

@ -101,5 +101,7 @@ struct apm_cmd {
} __attribute__ ((packed)) parameters; } __attribute__ ((packed)) parameters;
} __attribute__ ((packed)); } __attribute__ ((packed));
int dcdbas_smi_request(struct smi_cmd *smi_cmd);
#endif /* _DCDBAS_H_ */ #endif /* _DCDBAS_H_ */