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x86, iosf: Make IOSF driver modular and usable by more drivers

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Currently drivers that run on non-IOSF systems (Core/Xeon) can't use the IOSF
driver on SOC's without selecting it which forces an unnecessary and limiting
dependency. Provides dummy functions to allow these modules to conditionally
use the driver on IOSF equipped platforms without impacting their ability to
compile and load on non-IOSF platforms. Build default m to ensure availability
on x86 SOC's.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Link: http://lkml.kernel.org/r/1399668248-24199-2-git-send-email-david.e.box@linux.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
David E. Box
2014-05-09 13:44:05 -07:00
committed by H. Peter Anvin
parent d6d211db37
commit 6b8f0c8780
3 changed files with 42 additions and 5 deletions
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7
arch/x86/kernel/iosf_mbi.c
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@@ -177,6 +177,13 @@ int iosf_mbi_modify(u8 port, u8 opcode, u32 offset, u32 mdr, u32 mask)
}
EXPORT_SYMBOL(iosf_mbi_modify);
bool iosf_mbi_available(void)
{
/* Mbi isn't hot-pluggable. No remove routine is provided */
return mbi_pdev;
}
EXPORT_SYMBOL(iosf_mbi_available);
static int iosf_mbi_probe(struct pci_dev *pdev,
const struct pci_device_id *unused)
{