- legacy pme as module option and not hardcodes (so by default we match upstream...

[packages/kernel.git] / kernel-small_fixes.patch

--- linux-2.6.33/scripts/mod/modpost.c~	2010-02-24 19:52:17.000000000 +0100
+++ linux-2.6.33/scripts/mod/modpost.c	2010-03-07 14:26:47.242168558 +0100
@@ -15,7 +15,8 @@
 #include <stdio.h>
 #include <ctype.h>
 #include "modpost.h"
-#include "../../include/generated/autoconf.h"
+// PLD architectures don't use CONFIG_SYMBOL_PREFIX
+//#include "../../include/generated/autoconf.h"
 #include "../../include/linux/license.h"
 
 /* Some toolchains use a `_' prefix for all user symbols. */

From: Stephen Hemminger <shemminger@vyatta.com>

Some BIOS's don't setup power management correctly (what else is
new) and don't allow use of PCI Express power control. Add a special
exception module parameter to allow working around this issue.
Based on slightly different patch by Knut Petersen.

Reported-by: Arkadiusz Miskiewicz <arekm@maven.pl>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
---
Patch against -net (ie. 3.3.0)

--- a/drivers/net/ethernet/marvell/sky2.c	2012-01-10 10:56:56.855156017 -0800
+++ b/drivers/net/ethernet/marvell/sky2.c	2012-03-21 08:25:52.400929532 -0700
@@ -95,6 +95,10 @@ static int disable_msi = 0;
 module_param(disable_msi, int, 0);
 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
 
+static int legacy_pme = 0;
+module_param(legacy_pme, int, 0);
+MODULE_PARM_DESC(legacy_pme, "Legacy power management");
+
 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
 	{ PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
@@ -867,6 +871,13 @@ static void sky2_wol_init(struct sky2_po
 	/* Disable PiG firmware */
 	sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
 
+	/* Needed by some broken BIOSes, use PCI rather than PCI-e for WOL */
+	if (legacy_pme) {
+		u32 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
+		reg1 |= PCI_Y2_PME_LEGACY;
+		sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
+	}
+
 	/* block receiver */
 	sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
 	sky2_read32(hw, B0_CTST);


The RCU problem is likely to be a separate issue.  It might even be a 
result of the use-after-free problem with the elevator.

At any rate, it's clear that the crash in the refcounting log you
posted occurred because scsi_setup_blk_pc_cmnd() called
scsi_prep_state_check(), which tried to dereference the NULL pointer.

Would you like to try this patch to see if it fixes the problem?  As I 
said before, I'm not certain it's the best thing to do, but it worked 
on my system.

Alan Stern


Index: usb-3.0/drivers/scsi/scsi_lib.c
===================================================================
--- usb-3.0.orig/drivers/scsi/scsi_lib.c
+++ usb-3.0/drivers/scsi/scsi_lib.c
@@ -1247,6 +1247,8 @@ int scsi_prep_fn(struct request_queue *q
 	struct scsi_device *sdev = q->queuedata;
 	int ret = BLKPREP_KILL;
 
+	if (!sdev)
+		return ret;
 	if (req->cmd_type == REQ_TYPE_BLOCK_PC)
 		ret = scsi_setup_blk_pc_cmnd(sdev, req);
 	return scsi_prep_return(q, req, ret);
Index: usb-3.0/drivers/scsi/scsi_sysfs.c
===================================================================
--- usb-3.0.orig/drivers/scsi/scsi_sysfs.c
+++ usb-3.0/drivers/scsi/scsi_sysfs.c
@@ -322,6 +322,8 @@ static void scsi_device_dev_release_user
 		kfree(evt);
 	}
 
+	/* Freeing the queue signals to block that we're done */
+	scsi_free_queue(sdev->request_queue);
 	blk_put_queue(sdev->request_queue);
 	/* NULL queue means the device can't be used */
 	sdev->request_queue = NULL;
@@ -936,8 +938,6 @@ void __scsi_remove_device(struct scsi_de
 	/* cause the request function to reject all I/O requests */
 	sdev->request_queue->queuedata = NULL;
 
-	/* Freeing the queue signals to block that we're done */
-	scsi_free_queue(sdev->request_queue);
 	put_device(dev);
 }
 


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--- linux-3.0/scripts/kconfig/lxdialog/check-lxdialog.sh~	2011-07-22 04:17:23.000000000 +0200
+++ linux-3.0/scripts/kconfig/lxdialog/check-lxdialog.sh	2011-08-25 21:26:04.799150642 +0200
@@ -9,6 +9,12 @@
 			$cc -print-file-name=lib${lib}.${ext} | grep -q /
 			if [ $? -eq 0 ]; then
 				echo "-l${lib}"
+				for libt in tinfow tinfo ; do
+					$cc -print-file-name=lib${libt}.${ext} | grep -q /
+					if [ $? -eq 0 ]; then
+						echo "-l${libt}"
+					fi
+				done
 				exit
 			fi
 		done