16 files changed, 188 insertions, 152 deletions

diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile
index c31f5d5..264fb89 100644
--- a/arch/xtensa/kernel/Makefile
+++ b/arch/xtensa/kernel/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_FUNCTION_TRACER) += mcount.o
 obj-$(CONFIG_SMP) += smp.o mxhead.o
 obj-$(CONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS) += perf_event.o
 obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
+obj-$(CONFIG_S32C1I_SELFTEST) += s32c1i_selftest.o
 
 AFLAGS_head.o += -mtext-section-literals
 AFLAGS_mxhead.o += -mtext-section-literals
diff --git a/arch/xtensa/kernel/asm-offsets.c b/arch/xtensa/kernel/asm-offsets.c
index 8e10e35..bcb5beb 100644
--- a/arch/xtensa/kernel/asm-offsets.c
+++ b/arch/xtensa/kernel/asm-offsets.c
@@ -24,7 +24,7 @@
 
 #include <asm/ptrace.h>
 #include <asm/traps.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 
 int main(void)
 {
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c
index 4ac3d23..a265edd 100644
--- a/arch/xtensa/kernel/irq.c
+++ b/arch/xtensa/kernel/irq.c
@@ -25,7 +25,7 @@
 #include <linux/of.h>
 
 #include <asm/mxregs.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/platform.h>
 
 DECLARE_PER_CPU(unsigned long, nmi_count);
diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/pci-dma.c
index 1e68806..cec86a1 100644
--- a/arch/xtensa/kernel/pci-dma.c
+++ b/arch/xtensa/kernel/pci-dma.c
@@ -15,6 +15,7 @@
  * Joe Taylor <joe@tensilica.com, joetylr@yahoo.com>
  */
 
+#include <linux/dma-contiguous.h>
 #include <linux/gfp.h>
 #include <linux/highmem.h>
 #include <linux/mm.h>
@@ -146,6 +147,8 @@ static void *xtensa_dma_alloc(struct device *dev, size_t size,
 {
 	unsigned long ret;
 	unsigned long uncached = 0;
+	unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT;
+	struct page *page = NULL;
 
 	/* ignore region speicifiers */
 
@@ -153,11 +156,19 @@ static void *xtensa_dma_alloc(struct device *dev, size_t size,
 
 	if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
 		flag |= GFP_DMA;
-	ret = (unsigned long)__get_free_pages(flag, get_order(size));
 
-	if (ret == 0)
+	if (gfpflags_allow_blocking(flag))
+		page = dma_alloc_from_contiguous(dev, count, get_order(size),
+						 flag);
+
+	if (!page)
+		page = alloc_pages(flag, get_order(size));
+
+	if (!page)
 		return NULL;
 
+	ret = (unsigned long)page_address(page);
+
 	/* We currently don't support coherent memory outside KSEG */
 
 	BUG_ON(ret < XCHAL_KSEG_CACHED_VADDR ||
@@ -170,16 +181,19 @@ static void *xtensa_dma_alloc(struct device *dev, size_t size,
 	return (void *)uncached;
 }
 
-static void xtensa_dma_free(struct device *hwdev, size_t size, void *vaddr,
+static void xtensa_dma_free(struct device *dev, size_t size, void *vaddr,
 			    dma_addr_t dma_handle, unsigned long attrs)
 {
 	unsigned long addr = (unsigned long)vaddr +
 		XCHAL_KSEG_CACHED_VADDR - XCHAL_KSEG_BYPASS_VADDR;
+	struct page *page = virt_to_page(addr);
+	unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT;
 
 	BUG_ON(addr < XCHAL_KSEG_CACHED_VADDR ||
 	       addr > XCHAL_KSEG_CACHED_VADDR + XCHAL_KSEG_SIZE - 1);
 
-	free_pages(addr, get_order(size));
+	if (!dma_release_from_contiguous(dev, page, count))
+		__free_pages(page, get_order(size));
 }
 
 static dma_addr_t xtensa_map_page(struct device *dev, struct page *page,
@@ -189,7 +203,9 @@ static dma_addr_t xtensa_map_page(struct device *dev, struct page *page,
 {
 	dma_addr_t dma_handle = page_to_phys(page) + offset;
 
-	xtensa_sync_single_for_device(dev, dma_handle, size, dir);
+	if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
+		xtensa_sync_single_for_device(dev, dma_handle, size, dir);
+
 	return dma_handle;
 }
 
@@ -197,7 +213,8 @@ static void xtensa_unmap_page(struct device *dev, dma_addr_t dma_handle,
 			      size_t size, enum dma_data_direction dir,
 			      unsigned long attrs)
 {
-	xtensa_sync_single_for_cpu(dev, dma_handle, size, dir);
+	if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
+		xtensa_sync_single_for_cpu(dev, dma_handle, size, dir);
 }
 
 static int xtensa_map_sg(struct device *dev, struct scatterlist *sg,
@@ -233,7 +250,7 @@ int xtensa_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 	return 0;
 }
 
-struct dma_map_ops xtensa_dma_map_ops = {
+const struct dma_map_ops xtensa_dma_map_ops = {
 	.alloc = xtensa_dma_alloc,
 	.free = xtensa_dma_free,
 	.map_page = xtensa_map_page,
diff --git a/arch/xtensa/kernel/perf_event.c b/arch/xtensa/kernel/perf_event.c
index 0fecc8a..ff1d813 100644
--- a/arch/xtensa/kernel/perf_event.c
+++ b/arch/xtensa/kernel/perf_event.c
@@ -422,7 +422,7 @@ static int __init xtensa_pmu_init(void)
 	int irq = irq_create_mapping(NULL, XCHAL_PROFILING_INTERRUPT);
 
 	ret = cpuhp_setup_state(CPUHP_AP_PERF_XTENSA_STARTING,
-				"AP_PERF_XTENSA_STARTING", xtensa_pmu_setup,
+				"perf/xtensa:starting", xtensa_pmu_setup,
 				NULL);
 	if (ret) {
 		pr_err("xtensa_pmu: failed to register CPU-hotplug.\n");
diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c
index e0ded48..58f96d1 100644
--- a/arch/xtensa/kernel/process.c
+++ b/arch/xtensa/kernel/process.c
@@ -17,6 +17,9 @@
 
 #include <linux/errno.h>
 #include <linux/sched.h>
+#include <linux/sched/debug.h>
+#include <linux/sched/task.h>
+#include <linux/sched/task_stack.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/smp.h>
@@ -35,7 +38,7 @@
 #include <linux/rcupdate.h>
 
 #include <asm/pgtable.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/platform.h>
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index a651f3a..e0f583f 100644
--- a/arch/xtensa/kernel/ptrace.c
+++ b/arch/xtensa/kernel/ptrace.c
@@ -20,6 +20,7 @@
 #include <linux/perf_event.h>
 #include <linux/ptrace.h>
 #include <linux/sched.h>
+#include <linux/sched/task_stack.h>
 #include <linux/security.h>
 #include <linux/signal.h>
 #include <linux/smp.h>
@@ -29,7 +30,7 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/ptrace.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 
 
 void user_enable_single_step(struct task_struct *child)
diff --git a/arch/xtensa/kernel/s32c1i_selftest.c b/arch/xtensa/kernel/s32c1i_selftest.c
new file mode 100644
index 0000000..07e56e3
--- /dev/null
+++ b/arch/xtensa/kernel/s32c1i_selftest.c
@@ -0,0 +1,128 @@
+/*
+ * S32C1I selftest.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2016 Cadence Design Systems Inc.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <asm/traps.h>
+
+#if XCHAL_HAVE_S32C1I
+
+static int __initdata rcw_word, rcw_probe_pc, rcw_exc;
+
+/*
+ * Basic atomic compare-and-swap, that records PC of S32C1I for probing.
+ *
+ * If *v == cmp, set *v = set.  Return previous *v.
+ */
+static inline int probed_compare_swap(int *v, int cmp, int set)
+{
+	int tmp;
+
+	__asm__ __volatile__(
+			"	movi	%1, 1f\n"
+			"	s32i	%1, %4, 0\n"
+			"	wsr	%2, scompare1\n"
+			"1:	s32c1i	%0, %3, 0\n"
+			: "=a" (set), "=&a" (tmp)
+			: "a" (cmp), "a" (v), "a" (&rcw_probe_pc), "0" (set)
+			: "memory"
+			);
+	return set;
+}
+
+/* Handle probed exception */
+
+static void __init do_probed_exception(struct pt_regs *regs,
+				       unsigned long exccause)
+{
+	if (regs->pc == rcw_probe_pc) {	/* exception on s32c1i ? */
+		regs->pc += 3;		/* skip the s32c1i instruction */
+		rcw_exc = exccause;
+	} else {
+		do_unhandled(regs, exccause);
+	}
+}
+
+/* Simple test of S32C1I (soc bringup assist) */
+
+static int __init check_s32c1i(void)
+{
+	int n, cause1, cause2;
+	void *handbus, *handdata, *handaddr; /* temporarily saved handlers */
+
+	rcw_probe_pc = 0;
+	handbus  = trap_set_handler(EXCCAUSE_LOAD_STORE_ERROR,
+			do_probed_exception);
+	handdata = trap_set_handler(EXCCAUSE_LOAD_STORE_DATA_ERROR,
+			do_probed_exception);
+	handaddr = trap_set_handler(EXCCAUSE_LOAD_STORE_ADDR_ERROR,
+			do_probed_exception);
+
+	/* First try an S32C1I that does not store: */
+	rcw_exc = 0;
+	rcw_word = 1;
+	n = probed_compare_swap(&rcw_word, 0, 2);
+	cause1 = rcw_exc;
+
+	/* took exception? */
+	if (cause1 != 0) {
+		/* unclean exception? */
+		if (n != 2 || rcw_word != 1)
+			panic("S32C1I exception error");
+	} else if (rcw_word != 1 || n != 1) {
+		panic("S32C1I compare error");
+	}
+
+	/* Then an S32C1I that stores: */
+	rcw_exc = 0;
+	rcw_word = 0x1234567;
+	n = probed_compare_swap(&rcw_word, 0x1234567, 0xabcde);
+	cause2 = rcw_exc;
+
+	if (cause2 != 0) {
+		/* unclean exception? */
+		if (n != 0xabcde || rcw_word != 0x1234567)
+			panic("S32C1I exception error (b)");
+	} else if (rcw_word != 0xabcde || n != 0x1234567) {
+		panic("S32C1I store error");
+	}
+
+	/* Verify consistency of exceptions: */
+	if (cause1 || cause2) {
+		pr_warn("S32C1I took exception %d, %d\n", cause1, cause2);
+		/* If emulation of S32C1I upon bus error gets implemented,
+		 * we can get rid of this panic for single core (not SMP)
+		 */
+		panic("S32C1I exceptions not currently supported");
+	}
+	if (cause1 != cause2)
+		panic("inconsistent S32C1I exceptions");
+
+	trap_set_handler(EXCCAUSE_LOAD_STORE_ERROR, handbus);
+	trap_set_handler(EXCCAUSE_LOAD_STORE_DATA_ERROR, handdata);
+	trap_set_handler(EXCCAUSE_LOAD_STORE_ADDR_ERROR, handaddr);
+	return 0;
+}
+
+#else /* XCHAL_HAVE_S32C1I */
+
+/* This condition should not occur with a commercially deployed processor.
+ * Display reminder for early engr test or demo chips / FPGA bitstreams
+ */
+static int __init check_s32c1i(void)
+{
+	pr_warn("Processor configuration lacks atomic compare-and-swap support!\n");
+	return 0;
+}
+
+#endif /* XCHAL_HAVE_S32C1I */
+
+early_initcall(check_s32c1i);
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 7fc7bb9..197e75b 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -31,10 +31,6 @@
 # include <linux/console.h>
 #endif
 
-#ifdef CONFIG_RTC
-# include <linux/timex.h>
-#endif
-
 #ifdef CONFIG_PROC_FS
 # include <linux/seq_file.h>
 #endif
@@ -48,24 +44,22 @@
 #include <asm/page.h>
 #include <asm/setup.h>
 #include <asm/param.h>
-#include <asm/traps.h>
 #include <asm/smp.h>
 #include <asm/sysmem.h>
 
 #include <platform/hardware.h>
 
 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
-struct screen_info screen_info = { 0, 24, 0, 0, 0, 80, 0, 0, 0, 24, 1, 16};
-#endif
-
-#ifdef CONFIG_BLK_DEV_FD
-extern struct fd_ops no_fd_ops;
-struct fd_ops *fd_ops;
+struct screen_info screen_info = {
+	.orig_x = 0,
+	.orig_y = 24,
+	.orig_video_cols = 80,
+	.orig_video_lines = 24,
+	.orig_video_isVGA = 1,
+	.orig_video_points = 16,
+};
 #endif
 
-extern struct rtc_ops no_rtc_ops;
-struct rtc_ops *rtc_ops;
-
 #ifdef CONFIG_BLK_DEV_INITRD
 extern unsigned long initrd_start;
 extern unsigned long initrd_end;
@@ -77,7 +71,6 @@ extern int initrd_below_start_ok;
 void *dtb_start = __dtb_start;
 #endif
 
-unsigned char aux_device_present;
 extern unsigned long loops_per_jiffy;
 
 /* Command line specified as configuration option. */
@@ -317,120 +310,6 @@ extern char _SecondaryResetVector_text_start;
 extern char _SecondaryResetVector_text_end;
 #endif
 
-
-#ifdef CONFIG_S32C1I_SELFTEST
-#if XCHAL_HAVE_S32C1I
-
-static int __initdata rcw_word, rcw_probe_pc, rcw_exc;
-
-/*
- * Basic atomic compare-and-swap, that records PC of S32C1I for probing.
- *
- * If *v == cmp, set *v = set.  Return previous *v.
- */
-static inline int probed_compare_swap(int *v, int cmp, int set)
-{
-	int tmp;
-
-	__asm__ __volatile__(
-			"	movi	%1, 1f\n"
-			"	s32i	%1, %4, 0\n"
-			"	wsr	%2, scompare1\n"
-			"1:	s32c1i	%0, %3, 0\n"
-			: "=a" (set), "=&a" (tmp)
-			: "a" (cmp), "a" (v), "a" (&rcw_probe_pc), "0" (set)
-			: "memory"
-			);
-	return set;
-}
-
-/* Handle probed exception */
-
-static void __init do_probed_exception(struct pt_regs *regs,
-		unsigned long exccause)
-{
-	if (regs->pc == rcw_probe_pc) {	/* exception on s32c1i ? */
-		regs->pc += 3;		/* skip the s32c1i instruction */
-		rcw_exc = exccause;
-	} else {
-		do_unhandled(regs, exccause);
-	}
-}
-
-/* Simple test of S32C1I (soc bringup assist) */
-
-static int __init check_s32c1i(void)
-{
-	int n, cause1, cause2;
-	void *handbus, *handdata, *handaddr; /* temporarily saved handlers */
-
-	rcw_probe_pc = 0;
-	handbus  = trap_set_handler(EXCCAUSE_LOAD_STORE_ERROR,
-			do_probed_exception);
-	handdata = trap_set_handler(EXCCAUSE_LOAD_STORE_DATA_ERROR,
-			do_probed_exception);
-	handaddr = trap_set_handler(EXCCAUSE_LOAD_STORE_ADDR_ERROR,
-			do_probed_exception);
-
-	/* First try an S32C1I that does not store: */
-	rcw_exc = 0;
-	rcw_word = 1;
-	n = probed_compare_swap(&rcw_word, 0, 2);
-	cause1 = rcw_exc;
-
-	/* took exception? */
-	if (cause1 != 0) {
-		/* unclean exception? */
-		if (n != 2 || rcw_word != 1)
-			panic("S32C1I exception error");
-	} else if (rcw_word != 1 || n != 1) {
-		panic("S32C1I compare error");
-	}
-
-	/* Then an S32C1I that stores: */
-	rcw_exc = 0;
-	rcw_word = 0x1234567;
-	n = probed_compare_swap(&rcw_word, 0x1234567, 0xabcde);
-	cause2 = rcw_exc;
-
-	if (cause2 != 0) {
-		/* unclean exception? */
-		if (n != 0xabcde || rcw_word != 0x1234567)
-			panic("S32C1I exception error (b)");
-	} else if (rcw_word != 0xabcde || n != 0x1234567) {
-		panic("S32C1I store error");
-	}
-
-	/* Verify consistency of exceptions: */
-	if (cause1 || cause2) {
-		pr_warn("S32C1I took exception %d, %d\n", cause1, cause2);
-		/* If emulation of S32C1I upon bus error gets implemented,
-		   we can get rid of this panic for single core (not SMP) */
-		panic("S32C1I exceptions not currently supported");
-	}
-	if (cause1 != cause2)
-		panic("inconsistent S32C1I exceptions");
-
-	trap_set_handler(EXCCAUSE_LOAD_STORE_ERROR, handbus);
-	trap_set_handler(EXCCAUSE_LOAD_STORE_DATA_ERROR, handdata);
-	trap_set_handler(EXCCAUSE_LOAD_STORE_ADDR_ERROR, handaddr);
-	return 0;
-}
-
-#else /* XCHAL_HAVE_S32C1I */
-
-/* This condition should not occur with a commercially deployed processor.
-   Display reminder for early engr test or demo chips / FPGA bitstreams */
-static int __init check_s32c1i(void)
-{
-	pr_warn("Processor configuration lacks atomic compare-and-swap support!\n");
-	return 0;
-}
-
-#endif /* XCHAL_HAVE_S32C1I */
-early_initcall(check_s32c1i);
-#endif /* CONFIG_S32C1I_SELFTEST */
-
 static inline int mem_reserve(unsigned long start, unsigned long end)
 {
 	return memblock_reserve(start, end - start);
@@ -543,7 +422,7 @@ subsys_initcall(topology_init);
 
 void cpu_reset(void)
 {
-#if XCHAL_HAVE_PTP_MMU
+#if XCHAL_HAVE_PTP_MMU && IS_ENABLED(CONFIG_MMU)
 	local_irq_disable();
 	/*
 	 * We have full MMU: all autoload ways, ways 7, 8 and 9 of DTLB must
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c
index e87adaa..70a1319 100644
--- a/arch/xtensa/kernel/signal.c
+++ b/arch/xtensa/kernel/signal.c
@@ -20,9 +20,10 @@
 #include <linux/ptrace.h>
 #include <linux/personality.h>
 #include <linux/tracehook.h>
+#include <linux/sched/task_stack.h>
 
 #include <asm/ucontext.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/cacheflush.h>
 #include <asm/coprocessor.h>
 #include <asm/unistd.h>
diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c
index fc4ad21..932d646 100644
--- a/arch/xtensa/kernel/smp.c
+++ b/arch/xtensa/kernel/smp.c
@@ -21,6 +21,9 @@
 #include <linux/irq.h>
 #include <linux/kdebug.h>
 #include <linux/module.h>
+#include <linux/sched/mm.h>
+#include <linux/sched/hotplug.h>
+#include <linux/sched/task_stack.h>
 #include <linux/reboot.h>
 #include <linux/seq_file.h>
 #include <linux/smp.h>
@@ -135,8 +138,8 @@ void secondary_start_kernel(void)
 
 	/* All kernel threads share the same mm context. */
 
-	atomic_inc(&mm->mm_users);
-	atomic_inc(&mm->mm_count);
+	mmget(mm);
+	mmgrab(mm);
 	current->active_mm = mm;
 	cpumask_set_cpu(cpu, mm_cpumask(mm));
 	enter_lazy_tlb(mm, current);
diff --git a/arch/xtensa/kernel/stacktrace.c b/arch/xtensa/kernel/stacktrace.c
index 7538d80..e7d30ee 100644
--- a/arch/xtensa/kernel/stacktrace.c
+++ b/arch/xtensa/kernel/stacktrace.c
@@ -14,7 +14,7 @@
 
 #include <asm/stacktrace.h>
 #include <asm/traps.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 
 #if IS_ENABLED(CONFIG_OPROFILE) || IS_ENABLED(CONFIG_PERF_EVENTS)
 
diff --git a/arch/xtensa/kernel/syscall.c b/arch/xtensa/kernel/syscall.c
index 83cf496..0693792 100644
--- a/arch/xtensa/kernel/syscall.c
+++ b/arch/xtensa/kernel/syscall.c
@@ -15,7 +15,7 @@
  * Kevin Chea
  *
  */
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/syscall.h>
 #include <asm/unistd.h>
 #include <linux/linkage.h>
@@ -25,6 +25,7 @@
 #include <linux/file.h>
 #include <linux/fs.h>
 #include <linux/mman.h>
+#include <linux/sched/mm.h>
 #include <linux/shm.h>
 
 typedef void (*syscall_t)(void);
diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c
index be81e69..668c105 100644
--- a/arch/xtensa/kernel/time.c
+++ b/arch/xtensa/kernel/time.c
@@ -34,9 +34,9 @@
 unsigned long ccount_freq;		/* ccount Hz */
 EXPORT_SYMBOL(ccount_freq);
 
-static cycle_t ccount_read(struct clocksource *cs)
+static u64 ccount_read(struct clocksource *cs)
 {
-	return (cycle_t)get_ccount();
+	return (u64)get_ccount();
 }
 
 static u64 notrace ccount_sched_clock_read(void)
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c
index ce37d5b..c82c43b 100644
--- a/arch/xtensa/kernel/traps.c
+++ b/arch/xtensa/kernel/traps.c
@@ -24,7 +24,9 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
+#include <linux/sched/debug.h>
+#include <linux/sched/task_stack.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/stringify.h>
@@ -35,7 +37,7 @@
 #include <asm/stacktrace.h>
 #include <asm/ptrace.h>
 #include <asm/timex.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/processor.h>
 #include <asm/traps.h>
diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c
index 4d2872f..d159e9b 100644
--- a/arch/xtensa/kernel/xtensa_ksyms.c
+++ b/arch/xtensa/kernel/xtensa_ksyms.c
@@ -19,7 +19,7 @@
 #include <asm/irq.h>
 #include <linux/in6.h>
 
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/cacheflush.h>
 #include <asm/checksum.h>
 #include <asm/dma.h>