---

yaml
---
r: 87197
b: refs/heads/master
c: 299601c
h: refs/heads/master
i:
  87195: 49013b6
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 69e634f1e27c8e5b954ea4be2d05dd744cabc0bc
+refs/heads/master: 299601cfc0aabbabf82fca50652b7290cce7eb00

trunk/block/genhd.c

@@ -360,7 +360,9 @@ static struct kobject *base_probe(dev_t devt, int *part, void *data)
 
 static int __init genhd_device_init(void)
 {
-	class_register(&block_class);
+	int error = class_register(&block_class);
+	if (unlikely(error))
+		return error;
 	bdev_map = kobj_map_init(base_probe, &block_class_lock);
 	blk_dev_init();
 

trunk/drivers/pnp/quirks.c

@@ -17,7 +17,6 @@
 #include <linux/slab.h>
 #include <linux/pnp.h>
 #include <linux/io.h>
-#include <linux/dmi.h>
 #include <linux/kallsyms.h>
 #include "base.h"
 
@@ -109,42 +108,73 @@ static void quirk_sb16audio_resources(struct pnp_dev *dev)
 		       "pnp: SB audio device quirk - increasing port range\n");
 }
 
-static void quirk_supermicro_h8dce_system(struct pnp_dev *dev)
+
+#include <linux/pci.h>
+
+static void quirk_system_pci_resources(struct pnp_dev *dev)
 {
-	int i;
-	static struct dmi_system_id supermicro_h8dce[] = {
-		{
-			.ident = "Supermicro H8DCE",
-			.matches = {
-				DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
-				DMI_MATCH(DMI_PRODUCT_NAME, "H8DCE"),
-			},
-		},
-		{ }
-	};
-
-	if (!dmi_check_system(supermicro_h8dce))
-		return;
+	struct pci_dev *pdev = NULL;
+	resource_size_t pnp_start, pnp_end, pci_start, pci_end;
+	int i, j;
 
 	/*
-	 * On the Supermicro H8DCE, there's a system device with resources
-	 * that overlap BAR 6 of the built-in SATA PCI adapter.  If the PNP
-	 * system device claims them, the sata_nv driver won't be able to.
-	 * More details at:
-	 *     https://bugzilla.redhat.com/show_bug.cgi?id=280641
-	 *     https://bugzilla.redhat.com/show_bug.cgi?id=313491
-	 *     http://lkml.org/lkml/2008/1/9/449
-	 *     http://thread.gmane.org/gmane.linux.acpi.devel/27312
+	 * Some BIOSes have PNP motherboard devices with resources that
+	 * partially overlap PCI BARs.  The PNP system driver claims these
+	 * motherboard resources, which prevents the normal PCI driver from
+	 * requesting them later.
+	 *
+	 * This patch disables the PNP resources that conflict with PCI BARs
+	 * so they won't be claimed by the PNP system driver.
 	 */
-	for (i = 0; i < PNP_MAX_MEM; i++) {
-		if (pnp_mem_valid(dev, i) && pnp_mem_len(dev, i) &&
-		    (pnp_mem_start(dev, i) & 0xdfef0000) == 0xdfef0000) {
-			dev_warn(&dev->dev, "disabling 0x%llx-0x%llx to prevent"
-				" conflict with sata_nv PCI device\n",
-				(unsigned long long) pnp_mem_start(dev, i),
-				(unsigned long long) (pnp_mem_start(dev, i) +
-					pnp_mem_len(dev, i) - 1));
-			pnp_mem_flags(dev, i) = 0;
+	for_each_pci_dev(pdev) {
+		for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+			if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM) ||
+			    pci_resource_len(pdev, i) == 0)
+				continue;
+
+			pci_start = pci_resource_start(pdev, i);
+			pci_end = pci_resource_end(pdev, i);
+			for (j = 0; j < PNP_MAX_MEM; j++) {
+				if (!pnp_mem_valid(dev, j) ||
+				    pnp_mem_len(dev, j) == 0)
+					continue;
+
+				pnp_start = pnp_mem_start(dev, j);
+				pnp_end = pnp_mem_end(dev, j);
+
+				/*
+				 * If the PNP region doesn't overlap the PCI
+				 * region at all, there's no problem.
+				 */
+				if (pnp_end < pci_start || pnp_start > pci_end)
+					continue;
+
+				/*
+				 * If the PNP region completely encloses (or is
+				 * at least as large as) the PCI region, that's
+				 * also OK.  For example, this happens when the
+				 * PNP device describes a bridge with PCI
+				 * behind it.
+				 */
+				if (pnp_start <= pci_start &&
+				    pnp_end >= pci_end)
+					continue;
+
+				/*
+				 * Otherwise, the PNP region overlaps *part* of
+				 * the PCI region, and that might prevent a PCI
+				 * driver from requesting its resources.
+				 */
+				dev_warn(&dev->dev, "mem resource "
+					"(0x%llx-0x%llx) overlaps %s BAR %d "
+					"(0x%llx-0x%llx), disabling\n",
+					(unsigned long long) pnp_start,
+					(unsigned long long) pnp_end,
+					pci_name(pdev), i,
+					(unsigned long long) pci_start,
+					(unsigned long long) pci_end);
+				pnp_mem_flags(dev, j) = 0;
+			}
 		}
 	}
 }
@@ -169,8 +199,8 @@ static struct pnp_fixup pnp_fixups[] = {
 	{"CTL0043", quirk_sb16audio_resources},
 	{"CTL0044", quirk_sb16audio_resources},
 	{"CTL0045", quirk_sb16audio_resources},
-	{"PNP0c01", quirk_supermicro_h8dce_system},
-	{"PNP0c02", quirk_supermicro_h8dce_system},
+	{"PNP0c01", quirk_system_pci_resources},
+	{"PNP0c02", quirk_system_pci_resources},
 	{""}
 };
 

trunk/include/linux/Kbuild

@@ -205,7 +205,6 @@ unifdef-y += futex.h
 unifdef-y += fs.h
 unifdef-y += gameport.h
 unifdef-y += generic_serial.h
-unifdef-y += genhd.h
 unifdef-y += gfs2_ondisk.h
 unifdef-y += hayesesp.h
 unifdef-y += hdlcdrv.h

trunk/include/linux/genhd.h

@@ -55,24 +55,6 @@ enum {
 	UNIXWARE_PARTITION = 0x63,	/* Same as GNU_HURD and SCO Unix */
 };
 
-#ifndef __KERNEL__
-
-struct partition {
-	unsigned char boot_ind;		/* 0x80 - active */
-	unsigned char head;		/* starting head */
-	unsigned char sector;		/* starting sector */
-	unsigned char cyl;		/* starting cylinder */
-	unsigned char sys_ind;		/* What partition type */
-	unsigned char end_head;		/* end head */
-	unsigned char end_sector;	/* end sector */
-	unsigned char end_cyl;		/* end cylinder */
-	unsigned int start_sect;	/* starting sector counting from 0 */
-	unsigned int nr_sects;		/* nr of sectors in partition */
-} __attribute__((packed));
-
-#endif
-
-#ifdef __KERNEL__
 #include <linux/major.h>
 #include <linux/device.h>
 #include <linux/smp.h>
@@ -228,7 +210,7 @@ static inline void part_stat_set_all(struct hd_struct *part, int value)	{
 		       sizeof(struct disk_stats));
 }
 
-#else
+#else /* !CONFIG_SMP */
 #define __disk_stat_add(gendiskp, field, addnd) \
 				(gendiskp->dkstats.field += addnd)
 #define disk_stat_read(gendiskp, field)	(gendiskp->dkstats.field)
@@ -256,7 +238,7 @@ static inline void part_stat_set_all(struct hd_struct *part, int value)
 	memset(&part->dkstats, value, sizeof(struct disk_stats));
 }
 
-#endif
+#endif /* CONFIG_SMP */
 
 #define disk_stat_add(gendiskp, field, addnd)			\
 	do {							\
@@ -395,8 +377,6 @@ static inline void set_capacity(struct gendisk *disk, sector_t size)
 	disk->capacity = size;
 }
 
-#endif  /*  __KERNEL__  */
-
 #ifdef CONFIG_SOLARIS_X86_PARTITION
 
 #define SOLARIS_X86_NUMSLICE	16
@@ -540,8 +520,6 @@ struct unixware_disklabel {
 #   define MINIX_NR_SUBPARTITIONS  4
 #endif /* CONFIG_MINIX_SUBPARTITION */
 
-#ifdef __KERNEL__
-
 #define ADDPART_FLAG_NONE	0
 #define ADDPART_FLAG_RAID	1
 #define ADDPART_FLAG_WHOLEDISK	2
@@ -570,8 +548,6 @@ static inline struct block_device *bdget_disk(struct gendisk *disk, int index)
 	return bdget(MKDEV(disk->major, disk->first_minor) + index);
 }
 
-#endif
-
 #else /* CONFIG_BLOCK */
 
 static inline void printk_all_partitions(void) { }
@@ -584,4 +560,4 @@ static inline dev_t blk_lookup_devt(const char *name)
 
 #endif /* CONFIG_BLOCK */
 
-#endif
+#endif /* _LINUX_GENHD_H */

trunk/include/linux/mm.h

@@ -235,15 +235,22 @@ static inline int get_page_unless_zero(struct page *page)
 struct page *vmalloc_to_page(const void *addr);
 unsigned long vmalloc_to_pfn(const void *addr);
 
-#ifdef CONFIG_MMU
-/* Determine if an address is within the vmalloc range */
+/*
+ * Determine if an address is within the vmalloc range
+ *
+ * On nommu, vmalloc/vfree wrap through kmalloc/kfree directly, so there
+ * is no special casing required.
+ */
 static inline int is_vmalloc_addr(const void *x)
 {
+#ifdef CONFIG_MMU
 	unsigned long addr = (unsigned long)x;
 
 	return addr >= VMALLOC_START && addr < VMALLOC_END;
-}
+#else
+	return 0;
 #endif
+}
 
 static inline struct page *compound_head(struct page *page)
 {

trunk/net/sunrpc/xprtrdma/svc_rdma_sendto.c

@@ -156,7 +156,7 @@ static int send_write(struct svcxprt_rdma *xprt, struct svc_rqst *rqstp,
 	struct svc_rdma_op_ctxt *ctxt;
 	int ret = 0;
 
-	BUG_ON(sge_count >= 32);
+	BUG_ON(sge_count > RPCSVC_MAXPAGES);
 	dprintk("svcrdma: RDMA_WRITE rmr=%x, to=%llx, xdr_off=%d, "
 		"write_len=%d, xdr_sge=%p, sge_count=%d\n",
 		rmr, (unsigned long long)to, xdr_off,