Merge tag 'arc-6.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:

 - Incorrect VIPT aliasing assumption

 - Misc build warning fixes and some typos

* tag 'arc-6.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: [plat-hsdk]: Remove misplaced interrupt-cells property
  ARC: Fix typos
  ARC: mm: fix new code about cache aliasing
  ARC: Fix -Wmissing-prototypes warnings

arch/arc/Kconfig

@@ -6,7 +6,6 @@
 config ARC
 	def_bool y
 	select ARC_TIMERS
-	select ARCH_HAS_CPU_CACHE_ALIASING
 	select ARCH_HAS_CACHE_LINE_SIZE
 	select ARCH_HAS_DEBUG_VM_PGTABLE
 	select ARCH_HAS_DMA_PREP_COHERENT

arch/arc/boot/Makefile

 # SPDX-License-Identifier: GPL-2.0
 
-# uImage build relies on mkimage being availble on your host for ARC target
+# uImage build relies on mkimage being available on your host for ARC target
 # You will need to build u-boot for ARC, rename mkimage to arc-elf32-mkimage
-# and make sure it's reacable from your PATH
+# and make sure it's reachable from your PATH
 
 OBJCOPYFLAGS= -O binary -R .note -R .note.gnu.build-id -R .comment -S
 

arch/arc/boot/dts/axc003.dtsi

@@ -119,9 +119,9 @@ mmc@15000 {
 	/*
 	 * The DW APB ICTL intc on MB is connected to CPU intc via a
 	 * DT "invisible" DW APB GPIO block, configured to simply pass thru
-	 * interrupts - setup accordinly in platform init (plat-axs10x/ax10x.c)
+	 * interrupts - setup accordingly in platform init (plat-axs10x/ax10x.c)
 	 *
-	 * So here we mimic a direct connection betwen them, ignoring the
+	 * So here we mimic a direct connection between them, ignoring the
 	 * ABPG GPIO. Thus set "interrupts = <24>" (DW APB GPIO to core)
 	 * instead of "interrupts = <12>" (DW APB ICTL to DW APB GPIO)
 	 *

arch/arc/boot/dts/hsdk.dts

@@ -205,7 +205,6 @@ dmac_cfg_clk: dmac-gpu-cfg-clk {
 		};
 
 		gmac: ethernet@8000 {
-			#interrupt-cells = <1>;
 			compatible = "snps,dwmac";
 			reg = <0x8000 0x2000>;
 			interrupts = <10>;

arch/arc/boot/dts/vdk_axs10x_mb.dtsi

@@ -113,7 +113,7 @@ mmc@15000 {
 	/*
 	 * Embedded Vision subsystem UIO mappings; only relevant for EV VDK
 	 *
-	 * This node is intentionally put outside of MB above becase
+	 * This node is intentionally put outside of MB above because
 	 * it maps areas outside of MB's 0xez-0xfz.
 	 */
 	uio_ev: uio@d0000000 {

arch/arc/include/asm/cachetype.h

-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_ARC_CACHETYPE_H
-#define __ASM_ARC_CACHETYPE_H
-
-#include <linux/types.h>
-
-#define cpu_dcache_is_aliasing()	true
-
-#endif

arch/arc/include/asm/dsp.h

@@ -12,7 +12,7 @@
 /*
  * DSP-related saved registers - need to be saved only when you are
  * scheduled out.
- * structure fields name must correspond to aux register defenitions for
+ * structure fields name must correspond to aux register definitions for
  * automatic offset calculation in DSP_AUX_SAVE_RESTORE macros
  */
 struct dsp_callee_regs {

arch/arc/include/asm/entry-compact.h

@@ -7,7 +7,7 @@
  *  Stack switching code can no longer reliably rely on the fact that
  *  if we are NOT in user mode, stack is switched to kernel mode.
  *  e.g. L2 IRQ interrupted a L1 ISR which had not yet completed
- *  it's prologue including stack switching from user mode
+ *  its prologue including stack switching from user mode
  *
  * Vineetg: Aug 28th 2008: Bug #94984
  *  -Zero Overhead Loop Context shd be cleared when entering IRQ/EXcp/Trap
@@ -143,7 +143,7 @@
 	 * 2. L1 IRQ taken, ISR starts (CPU auto-switched to KERNEL mode)
 	 * 3. But before it could switch SP from USER to KERNEL stack
 	 *      a L2 IRQ "Interrupts" L1
-	 * Thay way although L2 IRQ happened in Kernel mode, stack is still
+	 * That way although L2 IRQ happened in Kernel mode, stack is still
 	 * not switched.
 	 * To handle this, we may need to switch stack even if in kernel mode
 	 * provided SP has values in range of USER mode stack ( < 0x7000_0000 )
@@ -173,7 +173,7 @@
 
 	GET_CURR_TASK_ON_CPU   r9
 
-	/* With current tsk in r9, get it's kernel mode stack base */
+	/* With current tsk in r9, get its kernel mode stack base */
 	GET_TSK_STACK_BASE  r9, r9
 
 	/* save U mode SP @ pt_regs->sp */
@@ -282,7 +282,7 @@
  * NOTE:
  *
  * It is recommended that lp_count/ilink1/ilink2 not be used as a dest reg
- * for memory load operations. If used in that way interrupts are deffered
+ * for memory load operations. If used in that way interrupts are deferred
  * by hardware and that is not good.
  *-------------------------------------------------------------*/
 .macro EXCEPTION_EPILOGUE
@@ -350,7 +350,7 @@
  * NOTE:
  *
  * It is recommended that lp_count/ilink1/ilink2 not be used as a dest reg
- * for memory load operations. If used in that way interrupts are deffered
+ * for memory load operations. If used in that way interrupts are deferred
  * by hardware and that is not good.
  *-------------------------------------------------------------*/
 .macro INTERRUPT_EPILOGUE  LVL

arch/arc/include/asm/entry.h

@@ -7,7 +7,7 @@
 #ifndef __ASM_ARC_ENTRY_H
 #define __ASM_ARC_ENTRY_H
 
-#include <asm/unistd.h>		/* For NR_syscalls defination */
+#include <asm/unistd.h>		/* For NR_syscalls definition */
 #include <asm/arcregs.h>
 #include <asm/ptrace.h>
 #include <asm/processor.h>	/* For VMALLOC_START */
@@ -56,7 +56,7 @@
 .endm
 
 /*-------------------------------------------------------------
- * given a tsk struct, get to the base of it's kernel mode stack
+ * given a tsk struct, get to the base of its kernel mode stack
  * tsk->thread_info is really a PAGE, whose bottom hoists stack
  * which grows upwards towards thread_info
  *------------------------------------------------------------*/

arch/arc/include/asm/irq.h

@@ -10,7 +10,7 @@
  * ARCv2 can support 240 interrupts in the core interrupts controllers and
  * 128 interrupts in IDU. Thus 512 virtual IRQs must be enough for most
  * configurations of boards.
- * This doesnt affect ARCompact, but we change it to same value
+ * This doesn't affect ARCompact, but we change it to same value
  */
 #define NR_IRQS		512
 

arch/arc/include/asm/irqflags-compact.h

@@ -46,7 +46,7 @@
  * IRQ Control Macros
  *
  * All of them have "memory" clobber (compiler barrier) which is needed to
- * ensure that LD/ST requiring irq safetly (R-M-W when LLSC is not available)
+ * ensure that LD/ST requiring irq safety (R-M-W when LLSC is not available)
  * are redone after IRQs are re-enabled (and gcc doesn't reuse stale register)
  *
  * Noted at the time of Abilis Timer List corruption

arch/arc/include/asm/mmu_context.h

@@ -165,7 +165,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
  * for retiring-mm. However destroy_context( ) still needs to do that because
  * between mm_release( ) = >deactive_mm( ) and
  * mmput => .. => __mmdrop( ) => destroy_context( )
- * there is a good chance that task gets sched-out/in, making it's ASID valid
+ * there is a good chance that task gets sched-out/in, making its ASID valid
  * again (this teased me for a whole day).
  */
 

arch/arc/include/asm/pgtable-bits-arcv2.h

@@ -66,7 +66,7 @@
  * Other rules which cause the divergence from 1:1 mapping
  *
  *  1. Although ARC700 can do exclusive execute/write protection (meaning R
- *     can be tracked independet of X/W unlike some other CPUs), still to
+ *     can be tracked independently of X/W unlike some other CPUs), still to
  *     keep things consistent with other archs:
  *      -Write implies Read:   W => R
  *      -Execute implies Read: X => R

arch/arc/include/asm/ptrace.h

@@ -169,7 +169,7 @@ static inline unsigned long regs_get_register(struct pt_regs *regs,
 	return *(unsigned long *)((unsigned long)regs + offset);
 }
 
-extern int syscall_trace_entry(struct pt_regs *);
+extern int syscall_trace_enter(struct pt_regs *);
 extern void syscall_trace_exit(struct pt_regs *);
 
 #endif /* !__ASSEMBLY__ */

arch/arc/include/asm/shmparam.h

@@ -6,7 +6,7 @@
 #ifndef __ARC_ASM_SHMPARAM_H
 #define __ARC_ASM_SHMPARAM_H
 
-/* Handle upto 2 cache bins */
+/* Handle up to 2 cache bins */
 #define	SHMLBA	(2 * PAGE_SIZE)
 
 /* Enforce SHMLBA in shmat */

arch/arc/include/asm/smp.h

@@ -77,7 +77,7 @@ static inline const char *arc_platform_smp_cpuinfo(void)
 
 /*
  * ARC700 doesn't support atomic Read-Modify-Write ops.
- * Originally Interrupts had to be disabled around code to gaurantee atomicity.
+ * Originally Interrupts had to be disabled around code to guarantee atomicity.
  * The LLOCK/SCOND insns allow writing interrupt-hassle-free based atomic ops
  * based on retry-if-irq-in-atomic (with hardware assist).
  * However despite these, we provide the IRQ disabling variant
@@ -86,7 +86,7 @@ static inline const char *arc_platform_smp_cpuinfo(void)
  *	support needed.
  *
  * (2) In a SMP setup, the LLOCK/SCOND atomicity across CPUs needs to be
- *	gaurantted by the platform (not something which core handles).
+ *	guaranteed by the platform (not something which core handles).
  *	Assuming a platform won't, SMP Linux needs to use spinlocks + local IRQ
  *	disabling for atomicity.
  *

arch/arc/include/asm/thread_info.h

@@ -38,7 +38,7 @@
 struct thread_info {
 	unsigned long flags;		/* low level flags */
 	unsigned long ksp;		/* kernel mode stack top in __switch_to */
-	int preempt_count;		/* 0 => preemptable, <0 => BUG */
+	int preempt_count;		/* 0 => preemptible, <0 => BUG */
 	int cpu;			/* current CPU */
 	unsigned long thr_ptr;		/* TLS ptr */
 	struct task_struct *task;	/* main task structure */

arch/arc/include/uapi/asm/swab.h

@@ -62,7 +62,7 @@
  * 8051fdc4:	st     r2,[r1,20]	; Mem op : save result back to mem
  *
  * Joern suggested a better "C" algorithm which is great since
- * (1) It is portable to any architecure
+ * (1) It is portable to any architecture
  * (2) At the same time it takes advantage of ARC ISA (rotate intrns)
  */
 

arch/arc/kernel/entry-arcv2.S

@@ -5,7 +5,7 @@
  * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
  */
 
-#include <linux/linkage.h>   /* ARC_{EXTRY,EXIT} */
+#include <linux/linkage.h>   /* ARC_{ENTRY,EXIT} */
 #include <asm/entry.h>       /* SAVE_ALL_{INT1,INT2,TRAP...} */
 #include <asm/errno.h>
 #include <asm/arcregs.h>
@@ -31,7 +31,7 @@ VECTOR	res_service		; Reset Vector
 VECTOR	mem_service		; Mem exception
 VECTOR	instr_service		; Instrn Error
 VECTOR	EV_MachineCheck		; Fatal Machine check
-VECTOR	EV_TLBMissI		; Intruction TLB miss
+VECTOR	EV_TLBMissI		; Instruction TLB miss
 VECTOR	EV_TLBMissD		; Data TLB miss
 VECTOR	EV_TLBProtV		; Protection Violation
 VECTOR	EV_PrivilegeV		; Privilege Violation
@@ -76,11 +76,11 @@ ENTRY(handle_interrupt)
 	# query in hard ISR path would return false (since .IE is set) which would
 	# trips genirq interrupt handling asserts.
 	#
-	# So do a "soft" disable of interrutps here.
+	# So do a "soft" disable of interrupts here.
 	#
 	# Note this disable is only for consistent book-keeping as further interrupts
 	# will be disabled anyways even w/o this. Hardware tracks active interrupts
-	# seperately in AUX_IRQ_ACT.active and will not take new interrupts
+	# separately in AUX_IRQ_ACT.active and will not take new interrupts
 	# unless this one returns (or higher prio becomes pending in 2-prio scheme)
 
 	IRQ_DISABLE

arch/arc/kernel/entry.S

@@ -95,7 +95,7 @@ ENTRY(EV_MachineCheck)
 	lr  r0, [efa]
 	mov r1, sp
 
-	; MC excpetions disable MMU
+	; MC exceptions disable MMU
 	ARC_MMU_REENABLE r3
 
 	lsr  	r3, r10, 8
@@ -209,7 +209,7 @@ trap_with_param:
 
 ; ---------------------------------------------
 ; syscall TRAP
-; ABI: (r0-r7) upto 8 args, (r8) syscall number
+; ABI: (r0-r7) up to 8 args, (r8) syscall number
 ; ---------------------------------------------
 
 ENTRY(EV_Trap)

arch/arc/kernel/head.S

@@ -165,7 +165,7 @@ ENTRY(first_lines_of_secondary)
 	; setup stack (fp, sp)
 	mov	fp, 0
 
-	; set it's stack base to tsk->thread_info bottom
+	; set its stack base to tsk->thread_info bottom
 	GET_TSK_STACK_BASE r0, sp
 
 	j	start_kernel_secondary

arch/arc/kernel/intc-arcv2.c

@@ -56,7 +56,7 @@ void arc_init_IRQ(void)
 	WRITE_AUX(AUX_IRQ_CTRL, ictrl);
 
 	/*
-	 * ARCv2 core intc provides multiple interrupt priorities (upto 16).
+	 * ARCv2 core intc provides multiple interrupt priorities (up to 16).
 	 * Typical builds though have only two levels (0-high, 1-low)
 	 * Linux by default uses lower prio 1 for most irqs, reserving 0 for
 	 * NMI style interrupts in future (say perf)

arch/arc/kernel/kprobes.c

@@ -190,7 +190,8 @@ static void __kprobes setup_singlestep(struct kprobe *p, struct pt_regs *regs)
 	}
 }
 
-int __kprobes arc_kprobe_handler(unsigned long addr, struct pt_regs *regs)
+static int
+__kprobes arc_kprobe_handler(unsigned long addr, struct pt_regs *regs)
 {
 	struct kprobe *p;
 	struct kprobe_ctlblk *kcb;
@@ -241,8 +242,8 @@ int __kprobes arc_kprobe_handler(unsigned long addr, struct pt_regs *regs)
 	return 0;
 }
 
-static int __kprobes arc_post_kprobe_handler(unsigned long addr,
-					 struct pt_regs *regs)
+static int
+__kprobes arc_post_kprobe_handler(unsigned long addr, struct pt_regs *regs)
 {
 	struct kprobe *cur = kprobe_running();
 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();

arch/arc/kernel/perf_event.c

@@ -38,7 +38,7 @@
  * (based on a specific RTL build)
  * Below is the static map between perf generic/arc specific event_id and
  * h/w condition names.
- * At the time of probe, we loop thru each index and find it's name to
+ * At the time of probe, we loop thru each index and find its name to
  * complete the mapping of perf event_id to h/w index as latter is needed
  * to program the counter really
  */

arch/arc/kernel/setup.c

@@ -390,7 +390,7 @@ static void arc_chk_core_config(struct cpuinfo_arc *info)
 #ifdef CONFIG_ARC_HAS_DCCM
 	/*
 	 * DCCM can be arbit placed in hardware.
-	 * Make sure it's placement/sz matches what Linux is built with
+	 * Make sure its placement/sz matches what Linux is built with
 	 */
 	if ((unsigned int)__arc_dccm_base != info->dccm.base)
 		panic("Linux built with incorrect DCCM Base address\n");

arch/arc/kernel/signal.c

@@ -8,15 +8,16 @@
  *
  * vineetg: Nov 2009 (Everything needed for TIF_RESTORE_SIGMASK)
  *  -do_signal() supports TIF_RESTORE_SIGMASK
- *  -do_signal() no loner needs oldset, required by OLD sys_sigsuspend
- *  -sys_rt_sigsuspend() now comes from generic code, so discard arch implemen
+ *  -do_signal() no longer needs oldset, required by OLD sys_sigsuspend
+ *  -sys_rt_sigsuspend() now comes from generic code, so discard arch
+ *   implementation
  *  -sys_sigsuspend() no longer needs to fudge ptregs, hence that arg removed
  *  -sys_sigsuspend() no longer loops for do_signal(), sets TIF_xxx and leaves
  *   the job to do_signal()
  *
  * vineetg: July 2009
  *  -Modified Code to support the uClibc provided userland sigreturn stub
- *   to avoid kernel synthesing it on user stack at runtime, costing TLB
+ *   to avoid kernel synthesizing it on user stack at runtime, costing TLB
  *   probes and Cache line flushes.
  *
  * vineetg: July 2009

arch/arc/kernel/traps.c

@@ -89,7 +89,7 @@ int do_misaligned_access(unsigned long address, struct pt_regs *regs,
 
 /*
  * Entry point for miscll errors such as Nested Exceptions
- *  -Duplicate TLB entry is handled seperately though
+ *  -Duplicate TLB entry is handled separately though
  */
 void do_machine_check_fault(unsigned long address, struct pt_regs *regs)
 {

arch/arc/kernel/vmlinux.lds.S

@@ -41,8 +41,8 @@ SECTIONS
 #endif
 
 	/*
-	 * The reason for having a seperate subsection .init.ramfs is to
-	 * prevent objump from including it in kernel dumps
+	 * The reason for having a separate subsection .init.ramfs is to
+	 * prevent objdump from including it in kernel dumps
 	 *
 	 * Reason for having .init.ramfs above .init is to make sure that the
 	 * binary blob is tucked away to one side, reducing the displacement

arch/arc/mm/tlb.c

@@ -212,7 +212,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 	unsigned long flags;
 
 	/* If range @start to @end is more than 32 TLB entries deep,
-	 * its better to move to a new ASID rather than searching for
+	 * it's better to move to a new ASID rather than searching for
 	 * individual entries and then shooting them down
 	 *
 	 * The calc above is rough, doesn't account for unaligned parts,
@@ -408,7 +408,7 @@ static void create_tlb(struct vm_area_struct *vma, unsigned long vaddr, pte_t *p
 	 * -More importantly it makes this handler inconsistent with fast-path
 	 *  TLB Refill handler which always deals with "current"
 	 *
-	 * Lets see the use cases when current->mm != vma->mm and we land here
+	 * Let's see the use cases when current->mm != vma->mm and we land here
 	 *  1. execve->copy_strings()->__get_user_pages->handle_mm_fault
 	 *     Here VM wants to pre-install a TLB entry for user stack while
 	 *     current->mm still points to pre-execve mm (hence the condition).

arch/arc/mm/tlbex.S

@@ -5,19 +5,19 @@
  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
  *
  * Vineetg: April 2011 :
- *  -MMU v1: moved out legacy code into a seperate file
+ *  -MMU v1: moved out legacy code into a separate file
  *  -MMU v3: PD{0,1} bits layout changed: They don't overlap anymore,
  *      helps avoid a shift when preparing PD0 from PTE
  *
  * Vineetg: July 2009
- *  -For MMU V2, we need not do heuristics at the time of commiting a D-TLB
- *   entry, so that it doesn't knock out it's I-TLB entry
+ *  -For MMU V2, we need not do heuristics at the time of committing a D-TLB
+ *   entry, so that it doesn't knock out its I-TLB entry
  *  -Some more fine tuning:
  *   bmsk instead of add, asl.cc instead of branch, delay slot utilise etc
  *
  * Vineetg: July 2009
  *  -Practically rewrote the I/D TLB Miss handlers
- *   Now 40 and 135 instructions a peice as compared to 131 and 449 resp.
+ *   Now 40 and 135 instructions apiece as compared to 131 and 449 resp.
  *   Hence Leaner by 1.5 K
  *   Used Conditional arithmetic to replace excessive branching
  *   Also used short instructions wherever possible