From: Randy Dunlap <[email protected]>
Add and use 'noacpi' parameter for libata-acpi.
Add and use 'printk' parameter for libata (parts).
Update Documentation/kernel-parameters.txt, including atapi_enabled.
Signed-off-by: Randy Dunlap <[email protected]>
---
Documentation/kernel-parameters.txt | 13 +++++++++++++
drivers/scsi/libata-acpi.c | 12 ++++++++++++
drivers/scsi/libata-core.c | 10 ++++++++++
drivers/scsi/libata.h | 2 ++
4 files changed, 37 insertions(+)
--- linux-2615-g9.orig/drivers/scsi/libata-core.c
+++ linux-2615-g9/drivers/scsi/libata-core.c
@@ -82,6 +82,14 @@ int atapi_enabled = 0;
module_param(atapi_enabled, int, 0444);
MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)");
+int noacpi = 0;
+module_param(noacpi, int, 0444);
+MODULE_PARM_DESC(noacpi, "Disables use of ACPI in suspend/resume when set");
+
+int libata_printk = ATA_MSG_DRV;
+module_param_named(printk, libata_printk, int, 0644);
+MODULE_PARM_DESC(printk, "Set libata printk flags"); /* in linux/libata.h */
+
MODULE_AUTHOR("Jeff Garzik");
MODULE_DESCRIPTION("Library module for ATA devices");
MODULE_LICENSE("GPL");
@@ -4492,6 +4500,8 @@ int ata_device_add(const struct ata_prob
(ap->mwdma_mask << ATA_SHIFT_MWDMA) |
(ap->pio_mask << ATA_SHIFT_PIO);
+ ap->msg_enable = libata_printk;
+
/* print per-port info to dmesg */
printk(KERN_INFO "ata%u: %cATA max %s cmd 0x%lX ctl 0x%lX "
"bmdma 0x%lX irq %lu\n",
--- linux-2615-g9.orig/Documentation/kernel-parameters.txt
+++ linux-2615-g9/Documentation/kernel-parameters.txt
@@ -41,6 +41,7 @@ restrictions referred to are that the re
ISAPNP ISA PnP code is enabled.
ISDN Appropriate ISDN support is enabled.
JOY Appropriate joystick support is enabled.
+ LIBATA libata driver is enabled.
LP Printer support is enabled.
LOOP Loopback device support is enabled.
M68k M68k architecture is enabled.
@@ -242,6 +243,9 @@ running once the system is up.
ataflop= [HW,M68k]
+ atapi_enabled= [LIBATA] Enable discovery & support of ATAPI devices
+ Format: <value> (0=off, 1=on)
+
atarimouse= [HW,MOUSE] Atari Mouse
atascsi= [HW,SCSI] Atari SCSI
@@ -968,6 +972,10 @@ running once the system is up.
emulation library even if a 387 maths coprocessor
is present.
+ noacpi= [LIBATA] Disables use of ACPI in libata suspend/resume
+ when set.
+ Format: <int>
+
noalign [KNL,ARM]
noapic [SMP,APIC] Tells the kernel to not make use of any
@@ -1212,6 +1220,11 @@ running once the system is up.
autoconfiguration.
Ranges are in pairs (memory base and size).
+ printk= [LIBATA] Set libata printk level (mask).
+ The values are defined in include/linux/libata.h.
+ The default value is 1 (ATA_MSG_DRV).
+ Format: <int>
+
profile= [KNL] Enable kernel profiling via /proc/profile
Format: [schedule,]<number>
Param: "schedule" - profile schedule points.
--- linux-2615-g9.orig/drivers/scsi/libata-acpi.c
+++ linux-2615-g9/drivers/scsi/libata-acpi.c
@@ -212,6 +212,9 @@ int ata_acpi_push_id(struct ata_port *ap
struct acpi_object_list input;
union acpi_object in_params[1];
+ if (noacpi)
+ return 0;
+
if (ata_msg_probe(ap))
printk(KERN_DEBUG
"%s: ap->id: %d, ix = %d, port#: %d, hard_port#: %d\n",
@@ -319,6 +322,9 @@ int do_drive_get_GTF(struct ata_port *ap
*gtf_length = 0;
*gtf_address = 0UL;
+ if (noacpi)
+ return 0;
+
if (!ata_dev_present(atadev) ||
(ap->flags & ATA_FLAG_PORT_DISABLED)) {
if (ata_msg_probe(ap))
@@ -493,6 +499,9 @@ int do_drive_set_taskfiles(struct ata_po
__FUNCTION__, ap->id,
ap->port_no, ap->hard_port_no);
+ if (noacpi)
+ return 0;
+
if (!ata_dev_present(atadev) ||
(ap->flags & ATA_FLAG_PORT_DISABLED))
goto out;
@@ -540,6 +549,9 @@ int ata_acpi_exec_tfs(struct ata_port *a
if (ata_msg_probe(ap))
printk(KERN_DEBUG "%s: ENTER:\n", __FUNCTION__);
+ if (noacpi)
+ return 0;
+
for (ix = 0; ix < ATA_MAX_DEVICES; ix++) {
printk(KERN_DEBUG "%s: call get_GTF, ix=%d\n",
__FUNCTION__, ix);
--- linux-2615-g9.orig/drivers/scsi/libata.h
+++ linux-2615-g9/drivers/scsi/libata.h
@@ -41,6 +41,8 @@ struct ata_scsi_args {
/* libata-core.c */
extern int atapi_enabled;
+extern int noacpi;
+extern int libata_printk;
extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
struct ata_device *dev);
extern int ata_rwcmd_protocol(struct ata_queued_cmd *qc);
---
-
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