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authorLinus Torvalds <torvalds@linux-foundation.org>2022-10-26 11:15:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-26 11:15:00 -0700
commit98555239e4c3aab1810d84073166eef6d54eeb3d (patch)
treebf9263e69fc1fedfe003a08a6d8542590bc9c228
parent4dc12f37a8e98e1dca5521c14625c869537b50b6 (diff)
parent4fd9df10cb7a9289fbd22d669f9f98164d95a1ce (diff)
Merge tag 'arc-6.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta: - fix for Page Table mem leak - defconfig updates - misc other fixes * tag 'arc-6.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: mm: fix leakage of memory allocated for PTE arc: update config files arc: iounmap() arg is volatile arc: dts: Harmonize EHCI/OHCI DT nodes name ARC: bitops: Change __fls to return unsigned long ARC: Fix comment typo ARC: Fix comment typo
-rw-r--r--arch/arc/boot/dts/axc003.dtsi4
-rw-r--r--arch/arc/boot/dts/axc003_idu.dtsi4
-rw-r--r--arch/arc/boot/dts/axs10x_mb.dtsi4
-rw-r--r--arch/arc/boot/dts/hsdk.dts4
-rw-r--r--arch/arc/boot/dts/vdk_axs10x_mb.dtsi2
-rw-r--r--arch/arc/configs/axs101_defconfig4
-rw-r--r--arch/arc/configs/axs103_defconfig4
-rw-r--r--arch/arc/configs/axs103_smp_defconfig4
-rw-r--r--arch/arc/configs/haps_hs_defconfig1
-rw-r--r--arch/arc/configs/haps_hs_smp_defconfig1
-rw-r--r--arch/arc/configs/hsdk_defconfig1
-rw-r--r--arch/arc/configs/nsim_700_defconfig1
-rw-r--r--arch/arc/configs/nsimosci_defconfig1
-rw-r--r--arch/arc/configs/nsimosci_hs_defconfig1
-rw-r--r--arch/arc/configs/nsimosci_hs_smp_defconfig6
-rw-r--r--arch/arc/configs/tb10x_defconfig7
-rw-r--r--arch/arc/configs/vdk_hs38_defconfig3
-rw-r--r--arch/arc/configs/vdk_hs38_smp_defconfig1
-rw-r--r--arch/arc/include/asm/bitops.h4
-rw-r--r--arch/arc/include/asm/entry-compact.h2
-rw-r--r--arch/arc/include/asm/io.h2
-rw-r--r--arch/arc/include/asm/pgtable-levels.h2
-rw-r--r--arch/arc/kernel/smp.c2
-rw-r--r--arch/arc/mm/cache.c4
-rw-r--r--arch/arc/mm/ioremap.c2
25 files changed, 20 insertions, 51 deletions
diff --git a/arch/arc/boot/dts/axc003.dtsi b/arch/arc/boot/dts/axc003.dtsi
index cd1edcf4f95e..3434c8131ecd 100644
--- a/arch/arc/boot/dts/axc003.dtsi
+++ b/arch/arc/boot/dts/axc003.dtsi
@@ -103,11 +103,11 @@
dma-coherent;
};
- ehci@40000 {
+ usb@40000 {
dma-coherent;
};
- ohci@60000 {
+ usb@60000 {
dma-coherent;
};
diff --git a/arch/arc/boot/dts/axc003_idu.dtsi b/arch/arc/boot/dts/axc003_idu.dtsi
index 70779386ca79..67556f4b7057 100644
--- a/arch/arc/boot/dts/axc003_idu.dtsi
+++ b/arch/arc/boot/dts/axc003_idu.dtsi
@@ -110,11 +110,11 @@
dma-coherent;
};
- ehci@40000 {
+ usb@40000 {
dma-coherent;
};
- ohci@60000 {
+ usb@60000 {
dma-coherent;
};
diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi
index 99d3e7175bf7..b64435385304 100644
--- a/arch/arc/boot/dts/axs10x_mb.dtsi
+++ b/arch/arc/boot/dts/axs10x_mb.dtsi
@@ -87,13 +87,13 @@
mac-address = [00 00 00 00 00 00]; /* Filled in by U-Boot */
};
- ehci@40000 {
+ usb@40000 {
compatible = "generic-ehci";
reg = < 0x40000 0x100 >;
interrupts = < 8 >;
};
- ohci@60000 {
+ usb@60000 {
compatible = "generic-ohci";
reg = < 0x60000 0x100 >;
interrupts = < 8 >;
diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index f48ba03e9b5e..6691f4255077 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -234,7 +234,7 @@
};
};
- ohci@60000 {
+ usb@60000 {
compatible = "snps,hsdk-v1.0-ohci", "generic-ohci";
reg = <0x60000 0x100>;
interrupts = <15>;
@@ -242,7 +242,7 @@
dma-coherent;
};
- ehci@40000 {
+ usb@40000 {
compatible = "snps,hsdk-v1.0-ehci", "generic-ehci";
reg = <0x40000 0x100>;
interrupts = <15>;
diff --git a/arch/arc/boot/dts/vdk_axs10x_mb.dtsi b/arch/arc/boot/dts/vdk_axs10x_mb.dtsi
index cbb179770293..90a412026e64 100644
--- a/arch/arc/boot/dts/vdk_axs10x_mb.dtsi
+++ b/arch/arc/boot/dts/vdk_axs10x_mb.dtsi
@@ -46,7 +46,7 @@
clock-names = "stmmaceth";
};
- ehci@40000 {
+ usb@40000 {
compatible = "generic-ehci";
reg = < 0x40000 0x100 >;
interrupts = < 8 >;
diff --git a/arch/arc/configs/axs101_defconfig b/arch/arc/configs/axs101_defconfig
index e31a8ebc3ecc..81764160451f 100644
--- a/arch/arc/configs/axs101_defconfig
+++ b/arch/arc/configs/axs101_defconfig
@@ -35,9 +35,6 @@ CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
@@ -99,7 +96,6 @@ CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
-# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
diff --git a/arch/arc/configs/axs103_defconfig b/arch/arc/configs/axs103_defconfig
index e0e8567f0d75..d5181275490e 100644
--- a/arch/arc/configs/axs103_defconfig
+++ b/arch/arc/configs/axs103_defconfig
@@ -34,9 +34,6 @@ CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
@@ -97,7 +94,6 @@ CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
-# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
diff --git a/arch/arc/configs/axs103_smp_defconfig b/arch/arc/configs/axs103_smp_defconfig
index fcbc952bc75b..2f336d99a8cf 100644
--- a/arch/arc/configs/axs103_smp_defconfig
+++ b/arch/arc/configs/axs103_smp_defconfig
@@ -35,9 +35,6 @@ CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
@@ -100,7 +97,6 @@ CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
-# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
diff --git a/arch/arc/configs/haps_hs_defconfig b/arch/arc/configs/haps_hs_defconfig
index d87ad7e88d62..899b2fd5c71d 100644
--- a/arch/arc/configs/haps_hs_defconfig
+++ b/arch/arc/configs/haps_hs_defconfig
@@ -59,6 +59,5 @@ CONFIG_EXT2_FS_XATTR=y
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
-# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_DEBUG_MEMORY_INIT=y
# CONFIG_DEBUG_PREEMPT is not set
diff --git a/arch/arc/configs/haps_hs_smp_defconfig b/arch/arc/configs/haps_hs_smp_defconfig
index 8d82cdb7f86a..0d32aac8069f 100644
--- a/arch/arc/configs/haps_hs_smp_defconfig
+++ b/arch/arc/configs/haps_hs_smp_defconfig
@@ -59,6 +59,5 @@ CONFIG_EXT2_FS_XATTR=y
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
-# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_SOFTLOCKUP_DETECTOR=y
# CONFIG_DEBUG_PREEMPT is not set
diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig
index f856b03e0fb5..d18378d2c2a6 100644
--- a/arch/arc/configs/hsdk_defconfig
+++ b/arch/arc/configs/hsdk_defconfig
@@ -85,7 +85,6 @@ CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
-# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig
index a1ce12bf5b16..3e9829775992 100644
--- a/arch/arc/configs/nsim_700_defconfig
+++ b/arch/arc/configs/nsim_700_defconfig
@@ -56,5 +56,4 @@ CONFIG_EXT2_FS_XATTR=y
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
-# CONFIG_ENABLE_MUST_CHECK is not set
# CONFIG_DEBUG_PREEMPT is not set
diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig
index ca10f4a2c823..502c87f351c8 100644
--- a/arch/arc/configs/nsimosci_defconfig
+++ b/arch/arc/configs/nsimosci_defconfig
@@ -65,4 +65,3 @@ CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
-# CONFIG_ENABLE_MUST_CHECK is not set
diff --git a/arch/arc/configs/nsimosci_hs_defconfig b/arch/arc/configs/nsimosci_hs_defconfig
index 31b6ec3683c6..f721cc3997d0 100644
--- a/arch/arc/configs/nsimosci_hs_defconfig
+++ b/arch/arc/configs/nsimosci_hs_defconfig
@@ -63,4 +63,3 @@ CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
-# CONFIG_ENABLE_MUST_CHECK is not set
diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig
index 41a0037f48a5..1419fc946a08 100644
--- a/arch/arc/configs/nsimosci_hs_smp_defconfig
+++ b/arch/arc/configs/nsimosci_hs_smp_defconfig
@@ -26,9 +26,6 @@ CONFIG_UNIX=y
CONFIG_UNIX_DIAG=y
CONFIG_NET_KEY=y
CONFIG_INET=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
CONFIG_DEVTMPFS=y
@@ -37,7 +34,6 @@ CONFIG_DEVTMPFS=y
# CONFIG_BLK_DEV is not set
CONFIG_NETDEVICES=y
# CONFIG_NET_VENDOR_ARC is not set
-# CONFIG_NET_CADENCE is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
CONFIG_EZCHIP_NPS_MANAGEMENT_ENET=y
# CONFIG_NET_VENDOR_INTEL is not set
@@ -74,5 +70,5 @@ CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
-# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_FTRACE=y
+# CONFIG_NET_VENDOR_CADENCE is not set
diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig
index 4a94d1684ed6..6f0d2be9d926 100644
--- a/arch/arc/configs/tb10x_defconfig
+++ b/arch/arc/configs/tb10x_defconfig
@@ -35,15 +35,11 @@ CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
CONFIG_DEVTMPFS=y
CONFIG_NETDEVICES=y
-# CONFIG_NET_CADENCE is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
@@ -94,12 +90,11 @@ CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_FS=y
CONFIG_HEADERS_INSTALL=y
-CONFIG_HEADERS_CHECK=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_SCHEDSTATS=y
-CONFIG_TIMER_STATS=y
# CONFIG_CRYPTO_HW is not set
+# CONFIG_NET_VENDOR_CADENCE is not set
diff --git a/arch/arc/configs/vdk_hs38_defconfig b/arch/arc/configs/vdk_hs38_defconfig
index 0c3b21416819..d3ef189c75f8 100644
--- a/arch/arc/configs/vdk_hs38_defconfig
+++ b/arch/arc/configs/vdk_hs38_defconfig
@@ -58,8 +58,6 @@ CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
CONFIG_FB=y
-CONFIG_ARCPGU_RGB888=y
-CONFIG_ARCPGU_DISPTYPE=0
# CONFIG_VGA_CONSOLE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
@@ -87,7 +85,6 @@ CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
-# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_SHIRQ=y
CONFIG_SOFTLOCKUP_DETECTOR=y
diff --git a/arch/arc/configs/vdk_hs38_smp_defconfig b/arch/arc/configs/vdk_hs38_smp_defconfig
index f9ad9d3ee702..944b347025fd 100644
--- a/arch/arc/configs/vdk_hs38_smp_defconfig
+++ b/arch/arc/configs/vdk_hs38_smp_defconfig
@@ -91,7 +91,6 @@ CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
-# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_SHIRQ=y
CONFIG_SOFTLOCKUP_DETECTOR=y
diff --git a/arch/arc/include/asm/bitops.h b/arch/arc/include/asm/bitops.h
index bdb7e190a294..f5a936496f06 100644
--- a/arch/arc/include/asm/bitops.h
+++ b/arch/arc/include/asm/bitops.h
@@ -82,7 +82,7 @@ static inline __attribute__ ((const)) int fls(unsigned int x)
/*
* __fls: Similar to fls, but zero based (0-31)
*/
-static inline __attribute__ ((const)) int __fls(unsigned long x)
+static inline __attribute__ ((const)) unsigned long __fls(unsigned long x)
{
if (!x)
return 0;
@@ -131,7 +131,7 @@ static inline __attribute__ ((const)) int fls(unsigned int x)
/*
* __fls: Similar to fls, but zero based (0-31). Also 0 if no bit set
*/
-static inline __attribute__ ((const)) int __fls(unsigned long x)
+static inline __attribute__ ((const)) unsigned long __fls(unsigned long x)
{
/* FLS insn has exactly same semantics as the API */
return __builtin_arc_fls(x);
diff --git a/arch/arc/include/asm/entry-compact.h b/arch/arc/include/asm/entry-compact.h
index 5aab4f93ab8a..67ff06e15cea 100644
--- a/arch/arc/include/asm/entry-compact.h
+++ b/arch/arc/include/asm/entry-compact.h
@@ -21,7 +21,7 @@
* r25 contains the kernel current task ptr
* - Defined Stack Switching Macro to be reused in all intr/excp hdlrs
* - Shaved off 11 instructions from RESTORE_ALL_INT1 by using the
- * address Write back load ld.ab instead of seperate ld/add instn
+ * address Write back load ld.ab instead of separate ld/add instn
*
* Amit Bhor, Sameer Dhavale: Codito Technologies 2004
*/
diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h
index 8f777d6441a5..80347382a380 100644
--- a/arch/arc/include/asm/io.h
+++ b/arch/arc/include/asm/io.h
@@ -32,7 +32,7 @@ static inline void ioport_unmap(void __iomem *addr)
{
}
-extern void iounmap(const void __iomem *addr);
+extern void iounmap(const volatile void __iomem *addr);
/*
* io{read,write}{16,32}be() macros
diff --git a/arch/arc/include/asm/pgtable-levels.h b/arch/arc/include/asm/pgtable-levels.h
index 64ca25d199be..ef68758b69f7 100644
--- a/arch/arc/include/asm/pgtable-levels.h
+++ b/arch/arc/include/asm/pgtable-levels.h
@@ -161,7 +161,7 @@
#define pmd_pfn(pmd) ((pmd_val(pmd) & PAGE_MASK) >> PAGE_SHIFT)
#define pmd_page(pmd) virt_to_page(pmd_page_vaddr(pmd))
#define set_pmd(pmdp, pmd) (*(pmdp) = pmd)
-#define pmd_pgtable(pmd) ((pgtable_t) pmd_page_vaddr(pmd))
+#define pmd_pgtable(pmd) ((pgtable_t) pmd_page(pmd))
/*
* 4th level paging: pte
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index ab9e75e90f72..ad93fe6e4b77 100644
--- a/arch/arc/kernel/smp.c
+++ b/arch/arc/kernel/smp.c
@@ -385,7 +385,7 @@ irqreturn_t do_IPI(int irq, void *dev_id)
* API called by platform code to hookup arch-common ISR to their IPI IRQ
*
* Note: If IPI is provided by platform (vs. say ARC MCIP), their intc setup/map
- * function needs to call call irq_set_percpu_devid() for IPI IRQ, otherwise
+ * function needs to call irq_set_percpu_devid() for IPI IRQ, otherwise
* request_percpu_irq() below will fail
*/
static DEFINE_PER_CPU(int, ipi_dev);
diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c
index 5446967ea98d..55c6de138eae 100644
--- a/arch/arc/mm/cache.c
+++ b/arch/arc/mm/cache.c
@@ -750,7 +750,7 @@ static inline void arc_slc_enable(void)
* -In SMP, if hardware caches are coherent
*
* There's a corollary case, where kernel READs from a userspace mapped page.
- * If the U-mapping is not congruent to to K-mapping, former needs flushing.
+ * If the U-mapping is not congruent to K-mapping, former needs flushing.
*/
void flush_dcache_page(struct page *page)
{
@@ -910,7 +910,7 @@ EXPORT_SYMBOL(flush_icache_range);
* @vaddr is typically user vaddr (breakpoint) or kernel vaddr (vmalloc)
* However in one instance, when called by kprobe (for a breakpt in
* builtin kernel code) @vaddr will be paddr only, meaning CDU operation will
- * use a paddr to index the cache (despite VIPT). This is fine since since a
+ * use a paddr to index the cache (despite VIPT). This is fine since a
* builtin kernel page will not have any virtual mappings.
* kprobe on loadable module will be kernel vaddr.
*/
diff --git a/arch/arc/mm/ioremap.c b/arch/arc/mm/ioremap.c
index 0ee75aca6e10..712c2311daef 100644
--- a/arch/arc/mm/ioremap.c
+++ b/arch/arc/mm/ioremap.c
@@ -94,7 +94,7 @@ void __iomem *ioremap_prot(phys_addr_t paddr, unsigned long size,
EXPORT_SYMBOL(ioremap_prot);
-void iounmap(const void __iomem *addr)
+void iounmap(const volatile void __iomem *addr)
{
/* weird double cast to handle phys_addr_t > 32 bits */
if (arc_uncached_addr_space((phys_addr_t)(u32)addr))