Merge branch '3.15-fixes' into mips-for-linux-next

3 files changed, 15 insertions, 13 deletions

diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c
index e198d9bf17bb..7b2df224f041 100644
--- a/arch/mips/kernel/branch.c
+++ b/arch/mips/kernel/branch.c
@@ -513,7 +513,7 @@ int __compute_return_epc_for_insn(struct pt_regs *regs,
 		if (regs->regs[insn.i_format.rs] ==
 		    regs->regs[insn.i_format.rt]) {
 			epc = epc + 4 + (insn.i_format.simmediate << 2);
-			if (insn.i_format.rt == beql_op)
+			if (insn.i_format.opcode == beql_op)
 				ret = BRANCH_LIKELY_TAKEN;
 		} else
 			epc += 8;
@@ -525,7 +525,7 @@ int __compute_return_epc_for_insn(struct pt_regs *regs,
 		if (regs->regs[insn.i_format.rs] !=
 		    regs->regs[insn.i_format.rt]) {
 			epc = epc + 4 + (insn.i_format.simmediate << 2);
-			if (insn.i_format.rt == bnel_op)
+			if (insn.i_format.opcode == bnel_op)
 				ret = BRANCH_LIKELY_TAKEN;
 		} else
 			epc += 8;
@@ -537,7 +537,7 @@ int __compute_return_epc_for_insn(struct pt_regs *regs,
 		/* rt field assumed to be zero */
 		if ((long)regs->regs[insn.i_format.rs] <= 0) {
 			epc = epc + 4 + (insn.i_format.simmediate << 2);
-			if (insn.i_format.rt == bnel_op)
+			if (insn.i_format.opcode == blezl_op)
 				ret = BRANCH_LIKELY_TAKEN;
 		} else
 			epc += 8;
@@ -549,7 +549,7 @@ int __compute_return_epc_for_insn(struct pt_regs *regs,
 		/* rt field assumed to be zero */
 		if ((long)regs->regs[insn.i_format.rs] > 0) {
 			epc = epc + 4 + (insn.i_format.simmediate << 2);
-			if (insn.i_format.rt == bnel_op)
+			if (insn.i_format.opcode == bgtzl_op)
 				ret = BRANCH_LIKELY_TAKEN;
 		} else
 			epc += 8;
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 71f85f427034..f639ccd5060c 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -163,7 +163,7 @@ int ptrace_get_watch_regs(struct task_struct *child,
 	enum pt_watch_style style;
 	int i;
 
-	if (!cpu_has_watch || current_cpu_data.watch_reg_use_cnt == 0)
+	if (!cpu_has_watch || boot_cpu_data.watch_reg_use_cnt == 0)
 		return -EIO;
 	if (!access_ok(VERIFY_WRITE, addr, sizeof(struct pt_watch_regs)))
 		return -EIO;
@@ -177,14 +177,14 @@ int ptrace_get_watch_regs(struct task_struct *child,
 #endif
 
 	__put_user(style, &addr->style);
-	__put_user(current_cpu_data.watch_reg_use_cnt,
+	__put_user(boot_cpu_data.watch_reg_use_cnt,
 		   &addr->WATCH_STYLE.num_valid);
-	for (i = 0; i < current_cpu_data.watch_reg_use_cnt; i++) {
+	for (i = 0; i < boot_cpu_data.watch_reg_use_cnt; i++) {
 		__put_user(child->thread.watch.mips3264.watchlo[i],
 			   &addr->WATCH_STYLE.watchlo[i]);
 		__put_user(child->thread.watch.mips3264.watchhi[i] & 0xfff,
 			   &addr->WATCH_STYLE.watchhi[i]);
-		__put_user(current_cpu_data.watch_reg_masks[i],
+		__put_user(boot_cpu_data.watch_reg_masks[i],
 			   &addr->WATCH_STYLE.watch_masks[i]);
 	}
 	for (; i < 8; i++) {
@@ -204,12 +204,12 @@ int ptrace_set_watch_regs(struct task_struct *child,
 	unsigned long lt[NUM_WATCH_REGS];
 	u16 ht[NUM_WATCH_REGS];
 
-	if (!cpu_has_watch || current_cpu_data.watch_reg_use_cnt == 0)
+	if (!cpu_has_watch || boot_cpu_data.watch_reg_use_cnt == 0)
 		return -EIO;
 	if (!access_ok(VERIFY_READ, addr, sizeof(struct pt_watch_regs)))
 		return -EIO;
 	/* Check the values. */
-	for (i = 0; i < current_cpu_data.watch_reg_use_cnt; i++) {
+	for (i = 0; i < boot_cpu_data.watch_reg_use_cnt; i++) {
 		__get_user(lt[i], &addr->WATCH_STYLE.watchlo[i]);
 #ifdef CONFIG_32BIT
 		if (lt[i] & __UA_LIMIT)
@@ -228,7 +228,7 @@ int ptrace_set_watch_regs(struct task_struct *child,
 			return -EINVAL;
 	}
 	/* Install them. */
-	for (i = 0; i < current_cpu_data.watch_reg_use_cnt; i++) {
+	for (i = 0; i < boot_cpu_data.watch_reg_use_cnt; i++) {
 		if (lt[i] & 7)
 			watch_active = 1;
 		child->thread.watch.mips3264.watchlo[i] = lt[i];
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 1fd1a0c4f104..51706d6dd5b0 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -704,10 +704,12 @@ int process_fpemu_return(int sig, void __user *fault_addr)
 		si.si_addr = fault_addr;
 		si.si_signo = sig;
 		if (sig == SIGSEGV) {
+			down_read(&current->mm->mmap_sem);
 			if (find_vma(current->mm, (unsigned long)fault_addr))
 				si.si_code = SEGV_ACCERR;
 			else
 				si.si_code = SEGV_MAPERR;
+			up_read(&current->mm->mmap_sem);
 		} else {
 			si.si_code = BUS_ADRERR;
 		}
@@ -1537,7 +1539,7 @@ asmlinkage void cache_parity_error(void)
 	       reg_val & (1<<30) ? "secondary" : "primary",
 	       reg_val & (1<<31) ? "data" : "insn");
 	if (cpu_has_mips_r2 &&
-	    ((current_cpu_data.processor_id && 0xff0000) == PRID_COMP_MIPS)) {
+	    ((current_cpu_data.processor_id & 0xff0000) == PRID_COMP_MIPS)) {
 		pr_err("Error bits: %s%s%s%s%s%s%s%s\n",
 			reg_val & (1<<29) ? "ED " : "",
 			reg_val & (1<<28) ? "ET " : "",
@@ -1577,7 +1579,7 @@ asmlinkage void do_ftlb(void)
 
 	/* For the moment, report the problem and hang. */
 	if (cpu_has_mips_r2 &&
-	    ((current_cpu_data.processor_id && 0xff0000) == PRID_COMP_MIPS)) {
+	    ((current_cpu_data.processor_id & 0xff0000) == PRID_COMP_MIPS)) {
 		pr_err("FTLB error exception, cp0_ecc=0x%08x:\n",
 		       read_c0_ecc());
 		pr_err("cp0_errorepc == %0*lx\n", field, read_c0_errorepc());