Merge tag 'parisc-for-6.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc architecture fixes from Helge Deller:
 "A bugfix in the LWS code, which used different lock words than the
  parisc lightweight spinlock checks. This inconsistency triggered false
  positives when the lightweight spinlock checks checked the locks of
  mutexes.

  The other patches are trivial cleanups and most of them fix sparse
  warnings.

  Summary:

   - Fix LWS code to use same lock words as for the parisc lightweight
     spinlocks

   - Use PTR_ERR_OR_ZERO() in pdt init code

   - Fix lots of sparse warnings"

* tag 'parisc-for-6.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: perf: Make cpu_device variable static
  parisc: ftrace: Add declaration for ftrace_function_trampoline()
  parisc: boot: Nuke some sparse warnings in decompressor
  parisc: processor: Include asm/smp.h for init_per_cpu()
  parisc: unaligned: Include linux/sysctl.h for unaligned_enabled
  parisc: Move proc_mckinley_root and proc_runway_root to sba_iommu
  parisc: dma: Add prototype for pcxl_dma_start
  parisc: parisc_ksyms: Include libgcc.h for libgcc prototypes
  parisc: ucmpdi2: Fix no previous prototype for '__ucmpdi2' warning
  parisc: firmware: Mark pdc_result buffers local
  parisc: firmware: Fix sparse context imbalance warnings
  parisc: signal: Fix sparse incorrect type in assignment warning
  parisc: ioremap: Fix sparse warnings
  parisc: fault: Use C99 arrary initializers
  parisc: pdt: Use PTR_ERR_OR_ZERO() to simplify code
  parisc: Fix lightweight spinlock checks to not break futexes

22 files changed, 88 insertions, 112 deletions

diff --git a/arch/parisc/Kconfig.debug b/arch/parisc/Kconfig.debug
index 1401e4c5fe5f7a..bf2b21b96f0bf1 100644
--- a/arch/parisc/Kconfig.debug
+++ b/arch/parisc/Kconfig.debug
@@ -2,7 +2,7 @@
 #
 config LIGHTWEIGHT_SPINLOCK_CHECK
 	bool "Enable lightweight spinlock checks"
-	depends on SMP && !DEBUG_SPINLOCK
+	depends on DEBUG_KERNEL && SMP && !DEBUG_SPINLOCK
 	default y
 	help
 	  Add checks with low performance impact to the spinlock functions
diff --git a/arch/parisc/boot/compressed/misc.c b/arch/parisc/boot/compressed/misc.c
index 7ee49f5881d158..d389359e22ac6c 100644
--- a/arch/parisc/boot/compressed/misc.c
+++ b/arch/parisc/boot/compressed/misc.c
@@ -117,7 +117,7 @@ char *strchr(const char *s, int c)
 	return NULL;
 }
 
-int puts(const char *s)
+static int puts(const char *s)
 {
 	const char *nuline = s;
 
@@ -172,7 +172,7 @@ static int print_num(unsigned long num, int base)
 	return 0;
 }
 
-int printf(const char *fmt, ...)
+static int printf(const char *fmt, ...)
 {
 	va_list args;
 	int i = 0;
@@ -204,13 +204,13 @@ void abort(void)
 }
 
 #undef malloc
-void *malloc(size_t size)
+static void *malloc(size_t size)
 {
 	return malloc_gzip(size);
 }
 
 #undef free
-void free(void *ptr)
+static void free(void *ptr)
 {
 	return free_gzip(ptr);
 }
@@ -278,7 +278,7 @@ static void parse_elf(void *output)
 	free(phdrs);
 }
 
-unsigned long decompress_kernel(unsigned int started_wide,
+asmlinkage unsigned long __visible decompress_kernel(unsigned int started_wide,
 		unsigned int command_line,
 		const unsigned int rd_start,
 		const unsigned int rd_end)
diff --git a/arch/parisc/include/asm/dma.h b/arch/parisc/include/asm/dma.h
index 9e8c101de902c7..582fb5d1a5d5f6 100644
--- a/arch/parisc/include/asm/dma.h
+++ b/arch/parisc/include/asm/dma.h
@@ -14,6 +14,8 @@
 #define dma_outb	outb
 #define dma_inb		inb
 
+extern unsigned long pcxl_dma_start;
+
 /*
 ** DMA_CHUNK_SIZE is used by the SCSI mid-layer to break up
 ** (or rather not merge) DMAs into manageable chunks.
diff --git a/arch/parisc/include/asm/ftrace.h b/arch/parisc/include/asm/ftrace.h
index a7cf0d05ccf467..f1cc1ee3a64738 100644
--- a/arch/parisc/include/asm/ftrace.h
+++ b/arch/parisc/include/asm/ftrace.h
@@ -12,6 +12,10 @@ extern void mcount(void);
 extern unsigned long sys_call_table[];
 
 extern unsigned long return_address(unsigned int);
+struct ftrace_regs;
+extern void ftrace_function_trampoline(unsigned long parent,
+		unsigned long self_addr, unsigned long org_sp_gr3,
+		struct ftrace_regs *fregs);
 
 #ifdef CONFIG_DYNAMIC_FTRACE
 extern void ftrace_caller(void);
diff --git a/arch/parisc/include/asm/spinlock.h b/arch/parisc/include/asm/spinlock.h
index edfcb9858bcb7c..0b326e52255e1a 100644
--- a/arch/parisc/include/asm/spinlock.h
+++ b/arch/parisc/include/asm/spinlock.h
@@ -7,8 +7,6 @@
 #include <asm/processor.h>
 #include <asm/spinlock_types.h>
 
-#define SPINLOCK_BREAK_INSN	0x0000c006	/* break 6,6 */
-
 static inline void arch_spin_val_check(int lock_val)
 {
 	if (IS_ENABLED(CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK))
diff --git a/arch/parisc/include/asm/spinlock_types.h b/arch/parisc/include/asm/spinlock_types.h
index d65934079ebdb0..efd06a897c6a3b 100644
--- a/arch/parisc/include/asm/spinlock_types.h
+++ b/arch/parisc/include/asm/spinlock_types.h
@@ -4,6 +4,10 @@
 
 #define __ARCH_SPIN_LOCK_UNLOCKED_VAL	0x1a46
 
+#define SPINLOCK_BREAK_INSN	0x0000c006	/* break 6,6 */
+
+#ifndef __ASSEMBLY__
+
 typedef struct {
 #ifdef CONFIG_PA20
 	volatile unsigned int slock;
@@ -27,6 +31,8 @@ typedef struct {
 	volatile unsigned int	counter;
 } arch_rwlock_t;
 
+#endif /* __ASSEMBLY__ */
+
 #define __ARCH_RW_LOCK_UNLOCKED__       0x01000000
 #define __ARCH_RW_LOCK_UNLOCKED         { .lock_mutex = __ARCH_SPIN_LOCK_UNLOCKED, \
 					.counter = __ARCH_RW_LOCK_UNLOCKED__ }
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index 6d1c781eb1dbd8..8f37e75f2fb9ca 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -74,8 +74,8 @@
 static DEFINE_SPINLOCK(pdc_lock);
 #endif
 
-unsigned long pdc_result[NUM_PDC_RESULT]  __aligned(8);
-unsigned long pdc_result2[NUM_PDC_RESULT] __aligned(8);
+static unsigned long pdc_result[NUM_PDC_RESULT]  __aligned(8);
+static unsigned long pdc_result2[NUM_PDC_RESULT] __aligned(8);
 
 #ifdef CONFIG_64BIT
 #define WIDE_FIRMWARE 0x1
@@ -334,7 +334,7 @@ int __pdc_cpu_rendezvous(void)
 /**
  * pdc_cpu_rendezvous_lock - Lock PDC while transitioning to rendezvous state
  */
-void pdc_cpu_rendezvous_lock(void)
+void pdc_cpu_rendezvous_lock(void) __acquires(&pdc_lock)
 {
 	spin_lock(&pdc_lock);
 }
@@ -342,7 +342,7 @@ void pdc_cpu_rendezvous_lock(void)
 /**
  * pdc_cpu_rendezvous_unlock - Unlock PDC after reaching rendezvous state
  */
-void pdc_cpu_rendezvous_unlock(void)
+void pdc_cpu_rendezvous_unlock(void) __releases(&pdc_lock)
 {
 	spin_unlock(&pdc_lock);
 }
diff --git a/arch/parisc/kernel/ftrace.c b/arch/parisc/kernel/ftrace.c
index 4d392e4ed35847..d1defb9ede70c0 100644
--- a/arch/parisc/kernel/ftrace.c
+++ b/arch/parisc/kernel/ftrace.c
@@ -53,7 +53,7 @@ static void __hot prepare_ftrace_return(unsigned long *parent,
 
 static ftrace_func_t ftrace_func;
 
-void notrace __hot ftrace_function_trampoline(unsigned long parent,
+asmlinkage void notrace __hot ftrace_function_trampoline(unsigned long parent,
 				unsigned long self_addr,
 				unsigned long org_sp_gr3,
 				struct ftrace_regs *fregs)
diff --git a/arch/parisc/kernel/parisc_ksyms.c b/arch/parisc/kernel/parisc_ksyms.c
index 00297e8e1c8887..6f0c92e8149d82 100644
--- a/arch/parisc/kernel/parisc_ksyms.c
+++ b/arch/parisc/kernel/parisc_ksyms.c
@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/syscalls.h>
+#include <linux/libgcc.h>
 
 #include <linux/string.h>
 EXPORT_SYMBOL(memset);
@@ -92,12 +93,6 @@ EXPORT_SYMBOL($$divI_12);
 EXPORT_SYMBOL($$divI_14);
 EXPORT_SYMBOL($$divI_15);
 
-extern void __ashrdi3(void);
-extern void __ashldi3(void);
-extern void __lshrdi3(void);
-extern void __muldi3(void);
-extern void __ucmpdi2(void);
-
 EXPORT_SYMBOL(__ashrdi3);
 EXPORT_SYMBOL(__ashldi3);
 EXPORT_SYMBOL(__lshrdi3);
diff --git a/arch/parisc/kernel/pci-dma.c b/arch/parisc/kernel/pci-dma.c
index 3f6b507970ebc4..bf9f192c826ebe 100644
--- a/arch/parisc/kernel/pci-dma.c
+++ b/arch/parisc/kernel/pci-dma.c
@@ -39,7 +39,7 @@ static struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
 static unsigned long pcxl_used_bytes __read_mostly;
 static unsigned long pcxl_used_pages __read_mostly;
 
-extern unsigned long pcxl_dma_start; /* Start of pcxl dma mapping area */
+unsigned long pcxl_dma_start __ro_after_init; /* pcxl dma mapping area start */
 static DEFINE_SPINLOCK(pcxl_res_lock);
 static char    *pcxl_res_map;
 static int     pcxl_res_hint;
@@ -381,7 +381,7 @@ pcxl_dma_init(void)
 	pcxl_res_map = (char *)__get_free_pages(GFP_KERNEL,
 					    get_order(pcxl_res_size));
 	memset(pcxl_res_map, 0, pcxl_res_size);
-	proc_gsc_root = proc_mkdir("gsc", NULL);
+	proc_gsc_root = proc_mkdir("bus/gsc", NULL);
 	if (!proc_gsc_root)
     		printk(KERN_WARNING
 			"pcxl_dma_init: Unable to create gsc /proc dir entry\n");
diff --git a/arch/parisc/kernel/pdt.c b/arch/parisc/kernel/pdt.c
index 0d24735bd9182a..0f9b3b5914cf69 100644
--- a/arch/parisc/kernel/pdt.c
+++ b/arch/parisc/kernel/pdt.c
@@ -354,10 +354,8 @@ static int __init pdt_initcall(void)
 		return -ENODEV;
 
 	kpdtd_task = kthread_run(pdt_mainloop, NULL, "kpdtd");
-	if (IS_ERR(kpdtd_task))
-		return PTR_ERR(kpdtd_task);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(kpdtd_task);
 }
 
 late_initcall(pdt_initcall);
diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
index 90b04d8af21208..b0f0816879df8f 100644
--- a/arch/parisc/kernel/perf.c
+++ b/arch/parisc/kernel/perf.c
@@ -57,7 +57,7 @@ struct rdr_tbl_ent {
 static int perf_processor_interface __read_mostly = UNKNOWN_INTF;
 static int perf_enabled __read_mostly;
 static DEFINE_SPINLOCK(perf_lock);
-struct parisc_device *cpu_device __read_mostly;
+static struct parisc_device *cpu_device __read_mostly;
 
 /* RDRs to write for PCX-W */
 static const int perf_rdrs_W[] =
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index 00b0df97afb145..762289b9984ea3 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -26,6 +26,7 @@
 #include <asm/processor.h>
 #include <asm/page.h>
 #include <asm/pdc.h>
+#include <asm/smp.h>
 #include <asm/pdcpat.h>
 #include <asm/irq.h>		/* for struct irq_region */
 #include <asm/parisc-device.h>
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index 573f8303e2b05c..211a4afdd282aa 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -40,11 +40,6 @@
 
 static char __initdata command_line[COMMAND_LINE_SIZE];
 
-/* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
-struct proc_dir_entry * proc_runway_root __read_mostly = NULL;
-struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
-struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL;
-
 static void __init setup_cmdline(char **cmdline_p)
 {
 	extern unsigned int boot_args[];
@@ -196,48 +191,6 @@ const struct seq_operations cpuinfo_op = {
 	.show	= show_cpuinfo
 };
 
-static void __init parisc_proc_mkdir(void)
-{
-	/*
-	** Can't call proc_mkdir() until after proc_root_init() has been
-	** called by start_kernel(). In other words, this code can't
-	** live in arch/.../setup.c because start_parisc() calls
-	** start_kernel().
-	*/
-	switch (boot_cpu_data.cpu_type) {
-	case pcxl:
-	case pcxl2:
-		if (NULL == proc_gsc_root)
-		{
-			proc_gsc_root = proc_mkdir("bus/gsc", NULL);
-		}
-		break;
-        case pcxt_:
-        case pcxu:
-        case pcxu_:
-        case pcxw:
-        case pcxw_:
-        case pcxw2:
-                if (NULL == proc_runway_root)
-                {
-                        proc_runway_root = proc_mkdir("bus/runway", NULL);
-                }
-                break;
-	case mako:
-	case mako2:
-                if (NULL == proc_mckinley_root)
-                {
-                        proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
-                }
-                break;
-	default:
-		/* FIXME: this was added to prevent the compiler 
-		 * complaining about missing pcx, pcxs and pcxt
-		 * I'm assuming they have neither gsc nor runway */
-		break;
-	}
-}
-
 static struct resource central_bus = {
 	.name	= "Central Bus",
 	.start	= F_EXTEND(0xfff80000),
@@ -294,7 +247,6 @@ static int __init parisc_init(void)
 {
 	u32 osid = (OS_ID_LINUX << 16);
 
-	parisc_proc_mkdir();
 	parisc_init_resources();
 	do_device_inventory();                  /* probe for hardware */
 
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index f886ff0c75df2d..e8d27def6c5210 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -423,7 +423,7 @@ static void check_syscallno_in_delay_branch(struct pt_regs *regs)
 	regs->gr[31] -= 8; /* delayed branching */
 
 	/* Get assembler opcode of code in delay branch */
-	uaddr = (unsigned int *) ((regs->gr[31] & ~3) + 4);
+	uaddr = (u32 __user *) ((regs->gr[31] & ~3) + 4);
 	err = get_user(opcode, uaddr);
 	if (err)
 		return;
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 1373e5129868f5..1f51aa9c8230cc 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -39,6 +39,7 @@ registers).
 #include <asm/assembly.h>
 #include <asm/processor.h>
 #include <asm/cache.h>
+#include <asm/spinlock_types.h>
 
 #include <linux/linkage.h>
 
@@ -66,6 +67,16 @@ registers).
 	stw	\reg1, 0(%sr2,\reg2)
 	.endm
 
+	/* raise exception if spinlock content is not zero or
+	 * __ARCH_SPIN_LOCK_UNLOCKED_VAL */
+	.macro	spinlock_check spin_val,tmpreg
+#ifdef CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK
+	ldi	__ARCH_SPIN_LOCK_UNLOCKED_VAL, \tmpreg
+	andcm,=	\spin_val, \tmpreg, %r0
+	.word	SPINLOCK_BREAK_INSN
+#endif
+	.endm
+
 	.text
 
 	.import syscall_exit,code
@@ -508,7 +519,8 @@ lws_start:
 
 lws_exit_noerror:
 	lws_pagefault_enable	%r1,%r21
-	stw,ma	%r20, 0(%sr2,%r20)
+	ldi	__ARCH_SPIN_LOCK_UNLOCKED_VAL, %r21
+	stw,ma	%r21, 0(%sr2,%r20)
 	ssm	PSW_SM_I, %r0
 	b	lws_exit
 	copy	%r0, %r21
@@ -521,7 +533,8 @@ lws_wouldblock:
 
 lws_pagefault:
 	lws_pagefault_enable	%r1,%r21
-	stw,ma	%r20, 0(%sr2,%r20)
+	ldi	__ARCH_SPIN_LOCK_UNLOCKED_VAL, %r21
+	stw,ma	%r21, 0(%sr2,%r20)
 	ssm	PSW_SM_I, %r0
 	ldo	3(%r0),%r28
 	b	lws_exit
@@ -619,6 +632,7 @@ lws_compare_and_swap:
 
 	/* Try to acquire the lock */
 	LDCW	0(%sr2,%r20), %r28
+	spinlock_check	%r28, %r21
 	comclr,<>	%r0, %r28, %r0
 	b,n	lws_wouldblock
 
@@ -772,6 +786,7 @@ cas2_lock_start:
 
 	/* Try to acquire the lock */
 	LDCW	0(%sr2,%r20), %r28
+	spinlock_check	%r28, %r21
 	comclr,<>	%r0, %r28, %r0
 	b,n	lws_wouldblock
 
@@ -1001,6 +1016,7 @@ atomic_xchg_start:
 
 	/* Try to acquire the lock */
 	LDCW	0(%sr2,%r20), %r28
+	spinlock_check	%r28, %r21
 	comclr,<>	%r0, %r28, %r0
 	b,n	lws_wouldblock
 
@@ -1199,6 +1215,7 @@ atomic_store_start:
 
 	/* Try to acquire the lock */
 	LDCW	0(%sr2,%r20), %r28
+	spinlock_check	%r28, %r21
 	comclr,<>	%r0, %r28, %r0
 	b,n	lws_wouldblock
 
@@ -1330,7 +1347,7 @@ ENTRY(lws_lock_start)
 	/* lws locks */
 	.rept 256
 	/* Keep locks aligned at 16-bytes */
-	.word 1
+	.word __ARCH_SPIN_LOCK_UNLOCKED_VAL
 	.word 0 
 	.word 0
 	.word 0
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index 8130627019229c..170d0dda4213eb 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -11,6 +11,7 @@
 #include <linux/signal.h>
 #include <linux/ratelimit.h>
 #include <linux/uaccess.h>
+#include <linux/sysctl.h>
 #include <asm/unaligned.h>
 #include <asm/hardirq.h>
 #include <asm/traps.h>
diff --git a/arch/parisc/lib/ucmpdi2.c b/arch/parisc/lib/ucmpdi2.c
index 8e6014a142ef40..9d8b4dbae27393 100644
--- a/arch/parisc/lib/ucmpdi2.c
+++ b/arch/parisc/lib/ucmpdi2.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/module.h>
+#include <linux/libgcc.h>
 
 union ull_union {
 	unsigned long long ull;
@@ -9,7 +10,7 @@ union ull_union {
 	} ui;
 };
 
-int __ucmpdi2(unsigned long long a, unsigned long long b)
+word_type __ucmpdi2(unsigned long long a, unsigned long long b)
 {
 	union ull_union au = {.ull = a};
 	union ull_union bu = {.ull = b};
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index a4c7c7630f48b1..2fe5b44986e092 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -192,31 +192,31 @@ int fixup_exception(struct pt_regs *regs)
  * For implementation see handle_interruption() in traps.c
  */
 static const char * const trap_description[] = {
-	[1] "High-priority machine check (HPMC)",
-	[2] "Power failure interrupt",
-	[3] "Recovery counter trap",
-	[5] "Low-priority machine check",
-	[6] "Instruction TLB miss fault",
-	[7] "Instruction access rights / protection trap",
-	[8] "Illegal instruction trap",
-	[9] "Break instruction trap",
-	[10] "Privileged operation trap",
-	[11] "Privileged register trap",
-	[12] "Overflow trap",
-	[13] "Conditional trap",
-	[14] "FP Assist Exception trap",
-	[15] "Data TLB miss fault",
-	[16] "Non-access ITLB miss fault",
-	[17] "Non-access DTLB miss fault",
-	[18] "Data memory protection/unaligned access trap",
-	[19] "Data memory break trap",
-	[20] "TLB dirty bit trap",
-	[21] "Page reference trap",
-	[22] "Assist emulation trap",
-	[25] "Taken branch trap",
-	[26] "Data memory access rights trap",
-	[27] "Data memory protection ID trap",
-	[28] "Unaligned data reference trap",
+	[1] =	"High-priority machine check (HPMC)",
+	[2] =	"Power failure interrupt",
+	[3] =	"Recovery counter trap",
+	[5] =	"Low-priority machine check",
+	[6] =	"Instruction TLB miss fault",
+	[7] =	"Instruction access rights / protection trap",
+	[8] =	"Illegal instruction trap",
+	[9] =	"Break instruction trap",
+	[10] =	"Privileged operation trap",
+	[11] =	"Privileged register trap",
+	[12] =	"Overflow trap",
+	[13] =	"Conditional trap",
+	[14] =	"FP Assist Exception trap",
+	[15] =	"Data TLB miss fault",
+	[16] =	"Non-access ITLB miss fault",
+	[17] =	"Non-access DTLB miss fault",
+	[18] =	"Data memory protection/unaligned access trap",
+	[19] =	"Data memory break trap",
+	[20] =	"TLB dirty bit trap",
+	[21] =	"Page reference trap",
+	[22] =	"Assist emulation trap",
+	[25] =	"Taken branch trap",
+	[26] =	"Data memory access rights trap",
+	[27] =	"Data memory protection ID trap",
+	[28] =	"Unaligned data reference trap",
 };
 
 const char *trap_name(unsigned long code)
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 389941c7f2098f..a088c243edeaa4 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -523,10 +523,6 @@ void mark_rodata_ro(void)
 void *parisc_vmalloc_start __ro_after_init;
 EXPORT_SYMBOL(parisc_vmalloc_start);
 
-#ifdef CONFIG_PA11
-unsigned long pcxl_dma_start __ro_after_init;
-#endif
-
 void __init mem_init(void)
 {
 	/* Do sanity checks on IPC (compat) structures */
diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c
index 345ff0b6649935..d7ee1f43d9974d 100644
--- a/arch/parisc/mm/ioremap.c
+++ b/arch/parisc/mm/ioremap.c
@@ -27,7 +27,7 @@
  */
 void __iomem *ioremap(unsigned long phys_addr, unsigned long size)
 {
-	void __iomem *addr;
+	uintptr_t addr;
 	struct vm_struct *area;
 	unsigned long offset, last_addr;
 	pgprot_t pgprot;
@@ -79,10 +79,9 @@ void __iomem *ioremap(unsigned long phys_addr, unsigned long size)
 	if (!area)
 		return NULL;
 
-	addr = (void __iomem *) area->addr;
-	if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
-			       phys_addr, pgprot)) {
-		vunmap(addr);
+	addr = (uintptr_t) area->addr;
+	if (ioremap_page_range(addr, addr + size, phys_addr, pgprot)) {
+		vunmap(area->addr);
 		return NULL;
 	}
 
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index bf3405f4289e8f..8b1dcd537020f5 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -121,6 +121,8 @@ module_param(sba_reserve_agpgart, int, 0444);
 MODULE_PARM_DESC(sba_reserve_agpgart, "Reserve half of IO pdir as AGPGART");
 #endif
 
+struct proc_dir_entry *proc_runway_root __ro_after_init;
+struct proc_dir_entry *proc_mckinley_root __ro_after_init;
 
 /************************************
 ** SBA register read and write support
@@ -1968,11 +1970,15 @@ static int __init sba_driver_callback(struct parisc_device *dev)
 #ifdef CONFIG_PROC_FS
 	switch (dev->id.hversion) {
 	case PLUTO_MCKINLEY_PORT:
+		if (!proc_mckinley_root)
+			proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
 		root = proc_mckinley_root;
 		break;
 	case ASTRO_RUNWAY_PORT:
 	case IKE_MERCED_PORT:
 	default:
+		if (!proc_runway_root)
+			proc_runway_root = proc_mkdir("bus/runway", NULL);
 		root = proc_runway_root;
 		break;
 	}