Merge branch '3.16-fixes' into mips-for-linux-next

arch/mips/jz4740/platform.c

@@ -59,7 +59,7 @@ struct platform_device jz4740_usb_ohci_device = {
 
 /* USB Device Controller */
 struct platform_device jz4740_udc_xceiv_device = {
-	.name = "usb_phy_gen_xceiv",
+	.name = "usb_phy_generic",
 	.id   = 0,
 };
 

arch/mips/kernel/ftrace.c

@@ -63,7 +63,7 @@ static inline int in_kernel_space(unsigned long ip)
 	((unsigned int)(JAL | (((addr) >> 2) & ADDR_MASK)))
 
 static unsigned int insn_jal_ftrace_caller __read_mostly;
-static unsigned int insn_lui_v1_hi16_mcount __read_mostly;
+static unsigned int insn_la_mcount[2] __read_mostly;
 static unsigned int insn_j_ftrace_graph_caller __maybe_unused __read_mostly;
 
 static inline void ftrace_dyn_arch_init_insns(void)
@@ -71,10 +71,10 @@ static inline void ftrace_dyn_arch_init_insns(void)
 	u32 *buf;
 	unsigned int v1;
 
-	/* lui v1, hi16_mcount */
+	/* la v1, _mcount */
 	v1 = 3;
-	buf = (u32 *)&insn_lui_v1_hi16_mcount;
+	buf = (u32 *)&insn_la_mcount[0];
-	UASM_i_LA_mostly(&buf, v1, MCOUNT_ADDR);
+	UASM_i_LA(&buf, v1, MCOUNT_ADDR);
 
 	/* jal (ftrace_caller + 8), jump over the first two instruction */
 	buf = (u32 *)&insn_jal_ftrace_caller;
@@ -111,14 +111,47 @@ static int ftrace_modify_code_2(unsigned long ip, unsigned int new_code1,
 				unsigned int new_code2)
 {
 	int faulted;
+	mm_segment_t old_fs;
 
 	safe_store_code(new_code1, ip, faulted);
 	if (unlikely(faulted))
 		return -EFAULT;
-	safe_store_code(new_code2, ip + 4, faulted);
+
+	ip += 4;
+	safe_store_code(new_code2, ip, faulted);
 	if (unlikely(faulted))
 		return -EFAULT;
+
+	ip -= 4;
+	old_fs = get_fs();
+	set_fs(get_ds());
 	flush_icache_range(ip, ip + 8);
+	set_fs(old_fs);
+
+	return 0;
+}
+
+static int ftrace_modify_code_2r(unsigned long ip, unsigned int new_code1,
+				 unsigned int new_code2)
+{
+	int faulted;
+	mm_segment_t old_fs;
+
+	ip += 4;
+	safe_store_code(new_code2, ip, faulted);
+	if (unlikely(faulted))
+		return -EFAULT;
+
+	ip -= 4;
+	safe_store_code(new_code1, ip, faulted);
+	if (unlikely(faulted))
+		return -EFAULT;
+
+	old_fs = get_fs();
+	set_fs(get_ds());
+	flush_icache_range(ip, ip + 8);
+	set_fs(old_fs);
+
 	return 0;
 }
 #endif
@@ -130,13 +163,14 @@ static int ftrace_modify_code_2(unsigned long ip, unsigned int new_code1,
  *
  * move at, ra
  * jal _mcount		--> nop
+ *  sub sp, sp, 8	--> nop  (CONFIG_32BIT)
  *
  * 2. For modules:
  *
  * 2.1 For KBUILD_MCOUNT_RA_ADDRESS and CONFIG_32BIT
  *
  * lui v1, hi_16bit_of_mcount	     --> b 1f (0x10000005)
- * addiu v1, v1, low_16bit_of_mcount
+ * addiu v1, v1, low_16bit_of_mcount --> nop  (CONFIG_32BIT)
  * move at, ra
  * move $12, ra_address
  * jalr v1
@@ -145,7 +179,7 @@ static int ftrace_modify_code_2(unsigned long ip, unsigned int new_code1,
  * 2.2 For the Other situations
  *
  * lui v1, hi_16bit_of_mcount	     --> b 1f (0x10000004)
- * addiu v1, v1, low_16bit_of_mcount
+ * addiu v1, v1, low_16bit_of_mcount --> nop  (CONFIG_32BIT)
  * move at, ra
  * jalr v1
  *  nop | move $12, ra_address | sub sp, sp, 8
@@ -184,10 +218,14 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
 	unsigned int new;
 	unsigned long ip = rec->ip;
 
-	new = in_kernel_space(ip) ? insn_jal_ftrace_caller :
+	new = in_kernel_space(ip) ? insn_jal_ftrace_caller : insn_la_mcount[0];
-		insn_lui_v1_hi16_mcount;
 
+#ifdef CONFIG_64BIT
 	return ftrace_modify_code(ip, new);
+#else
+	return ftrace_modify_code_2r(ip, new, in_kernel_space(ip) ?
+						INSN_NOP : insn_la_mcount[1]);
+#endif
 }
 
 #define FTRACE_CALL_IP ((unsigned long)(&ftrace_call))

arch/mips/kernel/mcount.S

@@ -84,6 +84,19 @@ _mcount:
 #endif
 
 	PTR_SUBU a0, ra, 8	/* arg1: self address */
+	PTR_LA   t1, _stext
+	sltu     t2, a0, t1	/* t2 = (a0 < _stext) */
+	PTR_LA   t1, _etext
+	sltu     t3, t1, a0	/* t3 = (a0 > _etext) */
+	or       t1, t2, t3
+	beqz     t1, ftrace_call
+	 nop
+#if defined(KBUILD_MCOUNT_RA_ADDRESS) && defined(CONFIG_32BIT)
+	PTR_SUBU a0, a0, 16	/* arg1: adjust to module's recorded callsite */
+#else
+	PTR_SUBU a0, a0, 12
+#endif
+
 	.globl ftrace_call
 ftrace_call:
 	nop	/* a placeholder for the call to a real tracing function */

arch/mips/kernel/ptrace.c

@@ -150,6 +150,7 @@ int ptrace_setfpregs(struct task_struct *child, __u32 __user *data)
 	}
 
 	__get_user(child->thread.fpu.fcr31, data + 64);
+	child->thread.fpu.fcr31 &= ~FPU_CSR_ALL_X;
 
 	/* FIR may not be written.  */
 
@@ -695,7 +696,7 @@ long arch_ptrace(struct task_struct *child, long request,
 			break;
 #endif
 		case FPC_CSR:
-			child->thread.fpu.fcr31 = data;
+			child->thread.fpu.fcr31 = data & ~FPU_CSR_ALL_X;
 			break;
 		case DSP_BASE ... DSP_BASE + 5: {
 			dspreg_t *dregs;

arch/mips/kernel/rtlx-cmp.c

@@ -77,6 +77,9 @@ int __init rtlx_module_init(void)
 		dev = device_create(mt_class, NULL, MKDEV(major, i), NULL,
 				    "%s%d", RTLX_MODULE_NAME, i);
 		if (IS_ERR(dev)) {
+			while (i--)
+				device_destroy(mt_class, MKDEV(major, i));
+
 			err = PTR_ERR(dev);
 			goto out_chrdev;
 		}

arch/mips/kernel/rtlx-mt.c

@@ -103,6 +103,9 @@ int __init rtlx_module_init(void)
 		dev = device_create(mt_class, NULL, MKDEV(major, i), NULL,
 				    "%s%d", RTLX_MODULE_NAME, i);
 		if (IS_ERR(dev)) {
+			while (i--)
+				device_destroy(mt_class, MKDEV(major, i));
+
 			err = PTR_ERR(dev);
 			goto out_chrdev;
 		}

arch/mips/kernel/scall64-n32.S

@@ -162,7 +162,7 @@ EXPORT(sysn32_call_table)
 	PTR	sys_getpeername
 	PTR	sys_socketpair
 	PTR	compat_sys_setsockopt
-	PTR	sys_getsockopt
+	PTR	compat_sys_getsockopt
 	PTR	__sys_clone			/* 6055 */
 	PTR	__sys_fork
 	PTR	compat_sys_execve

arch/mips/kernel/smp-mt.c

@@ -288,6 +288,7 @@ struct plat_smp_ops vsmp_smp_ops = {
 	.prepare_cpus		= vsmp_prepare_cpus,
 };
 
+#ifdef CONFIG_PROC_FS
 static int proc_cpuinfo_chain_call(struct notifier_block *nfb,
 	unsigned long action_unused, void *data)
 {
@@ -309,3 +310,4 @@ static int __init proc_cpuinfo_notifier_init(void)
 }
 
 subsys_initcall(proc_cpuinfo_notifier_init);
+#endif

arch/mips/kernel/unaligned.c

@@ -690,7 +690,6 @@ static void emulate_load_store_insn(struct pt_regs *regs,
 	case sdc1_op:
 		die_if_kernel("Unaligned FP access in kernel code", regs);
 		BUG_ON(!used_math());
-		BUG_ON(!is_fpu_owner());
 
 		lose_fpu(1);	/* Save FPU state for the emulator. */
 		res = fpu_emulator_cop1Handler(regs, &current->thread.fpu, 1,

arch/mips/math-emu/cp1emu.c

@@ -1827,7 +1827,7 @@ dcopuop:
 	case -1:
 
 		if (cpu_has_mips_4_5_r)
-			cbit = fpucondbit[MIPSInst_RT(ir) >> 2];
+			cbit = fpucondbit[MIPSInst_FD(ir) >> 2];
 		else
 			cbit = FPU_CSR_COND;
 		if (rv.w)

arch/mips/mm/tlbex.c

@@ -429,6 +429,7 @@ static void build_r3000_tlb_refill_handler(void)
 		 (unsigned int)(p - tlb_handler));
 
 	memcpy((void *)ebase, tlb_handler, 0x80);
+	local_flush_icache_range(ebase, ebase + 0x80);
 
 	dump_handler("r3000_tlb_refill", (u32 *)ebase, 32);
 }
@@ -1299,6 +1300,7 @@ static void build_r4000_tlb_refill_handler(void)
 	}
 #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
 	uasm_l_tlb_huge_update(&l, p);
+	UASM_i_LW(&p, K0, 0, K1);
 	build_huge_update_entries(&p, htlb_info.huge_pte, K1);
 	build_huge_tlb_write_entry(&p, &l, &r, K0, tlb_random,
 				   htlb_info.restore_scratch);
@@ -1415,6 +1417,7 @@ static void build_r4000_tlb_refill_handler(void)
 		 final_len);
 
 	memcpy((void *)ebase, final_handler, 0x100);
+	local_flush_icache_range(ebase, ebase + 0x100);
 
 	dump_handler("r4000_tlb_refill", (u32 *)ebase, 64);
 }

arch/mips/rb532/devices.c

@@ -223,6 +223,7 @@ static struct platform_device rb532_wdt = {
 
 static struct plat_serial8250_port rb532_uart_res[] = {
 	{
+		.type           = PORT_16550A,
 		.membase	= (char *)KSEG1ADDR(REGBASE + UART0BASE),
 		.irq		= UART0_IRQ,
 		.regshift	= 2,

arch/mips/sgi-ip22/ip22-gio.c

@@ -27,8 +27,14 @@ static struct {
 	{ .name = "SGI GR2/GR3", .id = 0x7f },
 };
 
+static void gio_bus_release(struct device *dev)
+{
+	kfree(dev);
+}
+
 static struct device gio_bus = {
 	.init_name = "gio",
+	.release = &gio_bus_release,
 };
 
 /**
@@ -413,8 +419,10 @@ int __init ip22_gio_init(void)
 	int ret;
 
 	ret = device_register(&gio_bus);
-	if (ret)
+	if (ret) {
+		put_device(&gio_bus);
 		return ret;
+	}
 
 	ret = bus_register(&gio_bus_type);
 	if (!ret) {

arch/mips/txx9/generic/7segled.c

@@ -83,6 +83,11 @@ static struct bus_type tx_7segled_subsys = {
 	.dev_name	= "7segled",
 };
 
+static void tx_7segled_release(struct device *dev)
+{
+	kfree(dev);
+}
+
 static int __init tx_7segled_init_sysfs(void)
 {
 	int error, i;
@@ -103,11 +108,14 @@ static int __init tx_7segled_init_sysfs(void)
 		}
 		dev->id = i;
 		dev->bus = &tx_7segled_subsys;
+		dev->release = &tx_7segled_release;
 		error = device_register(dev);
-		if (!error) {
+		if (error) {
-			device_create_file(dev, &dev_attr_ascii);
+			put_device(dev);
-			device_create_file(dev, &dev_attr_raw);
+			return error;
 		}
+		device_create_file(dev, &dev_attr_ascii);
+		device_create_file(dev, &dev_attr_raw);
 	}
 	return error;
 }

arch/mips/txx9/generic/setup.c

@@ -937,6 +937,14 @@ static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
 	return size;
 }
 
+static void txx9_device_release(struct device *dev)
+{
+	struct txx9_sramc_dev *tdev;
+
+	tdev = container_of(dev, struct txx9_sramc_dev, dev);
+	kfree(tdev);
+}
+
 void __init txx9_sramc_init(struct resource *r)
 {
 	struct txx9_sramc_dev *dev;
@@ -951,8 +959,11 @@ void __init txx9_sramc_init(struct resource *r)
 		return;
 	size = resource_size(r);
 	dev->base = ioremap(r->start, size);
-	if (!dev->base)
+	if (!dev->base) {
-		goto exit;
+		kfree(dev);
+		return;
+	}
+	dev->dev.release = &txx9_device_release;
 	dev->dev.bus = &txx9_sramc_subsys;
 	sysfs_bin_attr_init(&dev->bindata_attr);
 	dev->bindata_attr.attr.name = "bindata";
@@ -963,17 +974,15 @@ void __init txx9_sramc_init(struct resource *r)
 	dev->bindata_attr.private = dev;
 	err = device_register(&dev->dev);
 	if (err)
-		goto exit;
+		goto exit_put;
 	err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
 	if (err) {
 		device_unregister(&dev->dev);
-		goto exit;
+		iounmap(dev->base);
-	}
-	return;
-exit:
-	if (dev) {
-		if (dev->base)
-			iounmap(dev->base);
 		kfree(dev);
 	}
+	return;
+exit_put:
+	put_device(&dev->dev);
+	return;
 }