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List: linux-scsi
Subject: [PATCHv2 1/8] scsi: Add wrapper to access and set scsi_bus_type in struct acpi_bus_type
From: Holger Macht <holger () homac ! de>
Date: 2012-01-20 0:18:33
Message-ID: 20120120001833.GB27706 () homac ! suse ! de
[Download RAW message or body]
For being able to bind ata devices against acpi devices, scsi_bus_type
needs to be set as bus in struct acpi_bus_type. So add wrapper to
scsi_lib to accomplish that.
Signed-off-by: Holger Macht <holger@homac.de>
---
drivers/scsi/scsi_lib.c | 11 +++++++++++
include/scsi/scsi.h | 10 ++++++++++
2 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index b2c95db..79f2654 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -68,6 +68,17 @@ static struct scsi_host_sg_pool scsi_sg_pools[] = {
struct kmem_cache *scsi_sdb_cache;
+#ifdef CONFIG_ACPI
+#include <acpi/acpi_bus.h>
+
+int scsi_register_acpi_bus_type(struct acpi_bus_type *bus)
+{
+ bus->bus = &scsi_bus_type;
+ return register_acpi_bus_type(bus);
+}
+EXPORT_SYMBOL_GPL(scsi_register_acpi_bus_type);
+#endif
+
/*
* When to reinvoke queueing after a resource shortage. It's 3 msecs to
* not change behaviour from the previous unplug mechanism, experimentation
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 8001ae4..548fe9a 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -213,6 +213,16 @@ scsi_command_size(const unsigned char *cmnd)
scsi_varlen_cdb_length(cmnd) : COMMAND_SIZE(cmnd[0]);
}
+#ifdef CONFIG_ACPI
+struct acpi_bus_type;
+
+extern int
+scsi_register_acpi_bus_type(struct acpi_bus_type *bus);
+
+static inline void
+scsi_unregister_acpi_bus_type(struct acpi_bus_type *bus) { return; }
+#endif
+
/*
* SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft
* T10/1561-D Revision 4 Draft dated 7th November 2002.
--
1.7.8
--
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