Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Fix zImage.coff generation for 32-bit pmac
  [POWERPC] Fix compile breakage for IBM/AMCC 4xx arch/ppc platforms
  [POWERPC] Don't allow PMAC_APM_EMU for 64-bit
  [POWERPC] Compare irq numbers with NO_IRQ not IRQ_NONE
  [POWERPC] Fix return from pte_alloc_one() in out-of-memory case
  [POWERPC] Fix compile warning in pseries xics code
  [POWERPC] Don't use HOSTCFLAGS in BOOTCFLAGS
  [POWERPC] Create a zImage for legacy iSeries
  [POWERPC] pasemi idle uses hard_smp_processor_id
  [POWERPC] ps3/interrupt.c uses get_hard_smp_processor_id
  [POWERPC] Fix possible access to free pages
  [POWERPC] Fix compiler/assembler flags for Ebony platform boot files
  [POWERPC] Fix ppc32 single-stepping out of syscalls
  [POWERPC] Update documentation for of_find_node_by_type()

arch/powerpc/Makefile

@@ -142,7 +142,6 @@ drivers-$(CONFIG_OPROFILE)	+= arch/powerpc/oprofile/
 
 # Default to zImage, override when needed
 defaultimage-y			:= zImage
-defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
 defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
 KBUILD_IMAGE := $(defaultimage-y)
 all: $(KBUILD_IMAGE)

arch/powerpc/boot/Makefile

@@ -11,20 +11,18 @@
 #	bootloader and increase compatibility with OpenFirmware.
 #
 #	To this end we need to define BOOTCC, etc, as the tools
-#	needed to build the 32 bit image.  These are normally HOSTCC,
+#	needed to build the 32 bit image.  That's normally the same
-#	but may be a third compiler if, for example, you are cross
+#	compiler for the rest of the kernel, with the -m32 flag added.
-#	compiling from an intel box.  Once the 64bit ppc gcc is
-#	stable it will probably simply be a compiler switch to
-#	compile for 32bit mode.
 #	To make it easier to setup a cross compiler,
 #	CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
 #	in the toplevel makefile.
 
 all: $(obj)/zImage
 
-HOSTCC		:= gcc
+BOOTCFLAGS    := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-BOOTCFLAGS	:= $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \
+		 -fno-strict-aliasing -Os -msoft-float -pipe \
-		   $(shell $(CROSS32CC) -print-file-name=include) -fPIC
+		 -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
+		 -isystem $(shell $(CROSS32CC) -print-file-name=include)
 BOOTAFLAGS	:= -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
 
 ifeq ($(call cc-option-yn, -fstack-protector),y)
@@ -33,8 +31,8 @@ endif
 
 BOOTCFLAGS	+= -I$(obj) -I$(srctree)/$(obj)
 
-$(obj)/44x.o: BOOTCFLAGS += -Wa,-mbooke
+$(obj)/44x.o: BOOTCFLAGS += -mcpu=440
-$(obj)/ebony.o: BOOTCFLAGS += -Wa,-mbooke
+$(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
 
 zlib       := inffast.c inflate.c inftrees.c
 zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
@@ -136,6 +134,7 @@ image-$(CONFIG_PPC_EFIKA)		+= zImage.chrp
 image-$(CONFIG_PPC_PMAC)		+= zImage.pmac
 image-$(CONFIG_PPC_HOLLY)		+= zImage.holly-elf
 image-$(CONFIG_PPC_PRPMC2800)		+= zImage.prpmc2800
+image-$(CONFIG_PPC_ISERIES)		+= zImage.iseries
 image-$(CONFIG_DEFAULT_UIMAGE)		+= uImage
 
 ifneq ($(CONFIG_DEVICE_TREE),"")
@@ -185,6 +184,9 @@ $(obj)/zImage.initrd.%: vmlinux $(wrapperbits)
 $(obj)/zImage.%: vmlinux $(wrapperbits)
 	$(call if_changed,wrap,$*)
 
+$(obj)/zImage.iseries: vmlinux
+	$(STRIP) -s -R .comment $< -o $@
+
 $(obj)/zImage.ps3: vmlinux
 	$(STRIP) -s -R .comment $< -o $@
 

arch/powerpc/boot/wrapper

@@ -129,7 +129,7 @@ case "$platform" in
 pmac|pseries|chrp)
     platformo=$object/of.o
     ;;
-pmaccoff)
+coff)
     platformo=$object/of.o
     lds=$object/zImage.coff.lds
     ;;
@@ -220,7 +220,7 @@ case "$platform" in
 pseries|chrp)
     $object/addnote "$ofile"
     ;;
-pmaccoff)
+coff)
     ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
     $object/hack-coff "$ofile"
     ;;

arch/powerpc/kernel/irq.c

@@ -489,7 +489,7 @@ struct irq_host *irq_alloc_host(unsigned int revmap_type,
 	case IRQ_HOST_MAP_LINEAR:
 		rmap = (unsigned int *)(host + 1);
 		for (i = 0; i < revmap_arg; i++)
-			rmap[i] = IRQ_NONE;
+			rmap[i] = NO_IRQ;
 		host->revmap_data.linear.size = revmap_arg;
 		smp_wmb();
 		host->revmap_data.linear.revmap = rmap;
@@ -614,7 +614,7 @@ unsigned int irq_create_mapping(struct irq_host *host,
 	 * host->ops->map() to update the flags
 	 */
 	virq = irq_find_mapping(host, hwirq);
-	if (virq != IRQ_NONE) {
+	if (virq != NO_IRQ) {
 		if (host->ops->remap)
 			host->ops->remap(host, virq, hwirq);
 		pr_debug("irq: -> existing mapping on virq %d\n", virq);
@@ -741,7 +741,7 @@ void irq_dispose_mapping(unsigned int virq)
 	switch(host->revmap_type) {
 	case IRQ_HOST_MAP_LINEAR:
 		if (hwirq < host->revmap_data.linear.size)
-			host->revmap_data.linear.revmap[hwirq] = IRQ_NONE;
+			host->revmap_data.linear.revmap[hwirq] = NO_IRQ;
 		break;
 	case IRQ_HOST_MAP_TREE:
 		/* Check if radix tree allocated yet */

arch/powerpc/kernel/prom.c

@@ -1171,11 +1171,12 @@ EXPORT_SYMBOL(of_find_node_by_name);
 
 /**
  *	of_find_node_by_type - Find a node by its "device_type" property
- *	@from:	The node to start searching from or NULL, the node
+ *	@from:	The node to start searching from, or NULL to start searching
- *		you pass will not be searched, only the next one
+ *		the entire device tree. The node you pass will not be
- *		will; typically, you pass what the previous call
+ *		searched, only the next one will; typically, you pass
- *		returned. of_node_put() will be called on it
+ *		what the previous call returned. of_node_put() will be
- *	@name:	The type string to match against
+ *		called on from for you.
+ *	@type:	The type string to match against
  *
  *	Returns a node pointer with refcount incremented, use
  *	of_node_put() on it when done.

arch/powerpc/kernel/ptrace.c

@@ -218,6 +218,7 @@ set_single_step(struct task_struct *task)
 		regs->msr |= MSR_SE;
 #endif
 	}
+	set_tsk_thread_flag(task, TIF_SINGLESTEP);
 }
 
 static inline void
@@ -233,6 +234,7 @@ clear_single_step(struct task_struct *task)
 		regs->msr &= ~MSR_SE;
 #endif
 	}
+	clear_tsk_thread_flag(task, TIF_SINGLESTEP);
 }
 #endif /* CONFIG_PPC32 */
 

arch/powerpc/platforms/pasemi/idle.c

@@ -26,6 +26,7 @@
 
 #include <asm/machdep.h>
 #include <asm/reg.h>
+#include <asm/smp.h>
 
 #include "pasemi.h"
 

arch/powerpc/platforms/ps3/interrupt.c

@@ -25,6 +25,7 @@
 #include <asm/machdep.h>
 #include <asm/udbg.h>
 #include <asm/lv1call.h>
+#include <asm/smp.h>
 
 #include "platform.h"
 

arch/powerpc/platforms/pseries/xics.c

@@ -752,6 +752,7 @@ skip_gserver_check:
 void xics_request_IPIs(void)
 {
 	unsigned int ipi;
+	int rc;
 
 	ipi = irq_create_mapping(xics_host, XICS_IPI);
 	BUG_ON(ipi == NO_IRQ);
@@ -762,11 +763,12 @@ void xics_request_IPIs(void)
 	 */
 	set_irq_handler(ipi, handle_percpu_irq);
 	if (firmware_has_feature(FW_FEATURE_LPAR))
-		request_irq(ipi, xics_ipi_action_lpar, IRQF_DISABLED,
+		rc = request_irq(ipi, xics_ipi_action_lpar, IRQF_DISABLED,
-			    "IPI", NULL);
+				"IPI", NULL);
 	else
-		request_irq(ipi, xics_ipi_action_direct, IRQF_DISABLED,
+		rc = request_irq(ipi, xics_ipi_action_direct, IRQF_DISABLED,
-			    "IPI", NULL);
+				"IPI", NULL);
+	BUG_ON(rc);
 }
 #endif /* CONFIG_SMP */
 

arch/ppc/syslib/ibm_ocp.c

@@ -1,4 +1,5 @@
 #include <linux/module.h>
+#include <asm/ibm4xx.h>
 #include <asm/ocp.h>
 
 struct ocp_sys_info_data ocp_sys_info = {

drivers/macintosh/Kconfig

@@ -114,7 +114,7 @@ config PMAC_SMU
 config PMAC_APM_EMU
 	tristate "APM emulation"
 	select APM_EMULATION
-	depends on ADB_PMU && PM
+	depends on ADB_PMU && PM && PPC32
 
 config PMAC_MEDIABAY
 	bool "Support PowerBook hotswap media bay"

include/asm-powerpc/pgalloc-64.h

@@ -90,7 +90,8 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
 static inline struct page *pte_alloc_one(struct mm_struct *mm,
 					 unsigned long address)
 {
-	return virt_to_page(pte_alloc_one_kernel(mm, address));
+	pte_t *pte = pte_alloc_one_kernel(mm, address);
+	return pte ? virt_to_page(pte) : NULL;
 }
 
 static inline void pte_free_kernel(pte_t *pte)

include/asm-powerpc/tlb.h

@@ -38,6 +38,15 @@ extern void pte_free_finish(void);
 
 static inline void tlb_flush(struct mmu_gather *tlb)
 {
+	struct ppc64_tlb_batch *tlbbatch = &__get_cpu_var(ppc64_tlb_batch);
+
+	/* If there's a TLB batch pending, then we must flush it because the
+	 * pages are going to be freed and we really don't want to have a CPU
+	 * access a freed page because it has a stale TLB
+	 */
+	if (tlbbatch->index)
+		__flush_tlb_pending(tlbbatch);
+
 	pte_free_finish();
 }