From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Guenter Roeck <linux@roeck-us.net>,
Arnd Bergmann <arnd@arndb.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.4 21/41] alpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile
Date: Mon, 4 Oct 2021 14:52:12 +0200 [thread overview]
Message-ID: <20211004125027.255850386@linuxfoundation.org> (raw)
In-Reply-To: <20211004125026.597501645@linuxfoundation.org>
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit 35a3f4ef0ab543daa1725b0c963eb8c05e3376f8 ]
Some drivers pass a pointer to volatile data to virt_to_bus() and
virt_to_phys(), and that works fine. One exception is alpha. This
results in a number of compile errors such as
drivers/net/wan/lmc/lmc_main.c: In function 'lmc_softreset':
drivers/net/wan/lmc/lmc_main.c:1782:50: error:
passing argument 1 of 'virt_to_bus' discards 'volatile'
qualifier from pointer target type
drivers/atm/ambassador.c: In function 'do_loader_command':
drivers/atm/ambassador.c:1747:58: error:
passing argument 1 of 'virt_to_bus' discards 'volatile'
qualifier from pointer target type
Declare the parameter of virt_to_phys and virt_to_bus as pointer to
volatile to fix the problem.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/alpha/include/asm/io.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
index 355aec0867f4..e55a5e6ab460 100644
--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -60,7 +60,7 @@ extern inline void set_hae(unsigned long new_hae)
* Change virtual addresses to physical addresses and vv.
*/
#ifdef USE_48_BIT_KSEG
-static inline unsigned long virt_to_phys(void *address)
+static inline unsigned long virt_to_phys(volatile void *address)
{
return (unsigned long)address - IDENT_ADDR;
}
@@ -70,7 +70,7 @@ static inline void * phys_to_virt(unsigned long address)
return (void *) (address + IDENT_ADDR);
}
#else
-static inline unsigned long virt_to_phys(void *address)
+static inline unsigned long virt_to_phys(volatile void *address)
{
unsigned long phys = (unsigned long)address;
@@ -111,7 +111,7 @@ static inline dma_addr_t __deprecated isa_page_to_bus(struct page *page)
extern unsigned long __direct_map_base;
extern unsigned long __direct_map_size;
-static inline unsigned long __deprecated virt_to_bus(void *address)
+static inline unsigned long __deprecated virt_to_bus(volatile void *address)
{
unsigned long phys = virt_to_phys(address);
unsigned long bus = phys + __direct_map_base;
--
2.33.0
next prev parent reply other threads:[~2021-10-04 12:54 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-04 12:51 [PATCH 4.4 00/41] 4.4.286-rc1 review Greg Kroah-Hartman
2021-10-04 12:51 ` [PATCH 4.4 01/41] usb: gadget: r8a66597: fix a loop in set_feature() Greg Kroah-Hartman
2021-10-04 12:51 ` [PATCH 4.4 02/41] usb: musb: tusb6010: uninitialized data in tusb_fifo_write_unaligned() Greg Kroah-Hartman
2021-10-04 12:51 ` [PATCH 4.4 03/41] cifs: fix incorrect check for null pointer in header_assemble Greg Kroah-Hartman
2021-10-04 12:51 ` [PATCH 4.4 04/41] xen/x86: fix PV trap handling on secondary processors Greg Kroah-Hartman
2021-10-04 12:51 ` [PATCH 4.4 05/41] USB: serial: cp210x: add ID for GW Instek GDM-834x Digital Multimeter Greg Kroah-Hartman
2021-10-04 12:51 ` [PATCH 4.4 06/41] USB: serial: mos7840: remove duplicated 0xac24 device ID Greg Kroah-Hartman
2021-10-04 12:51 ` [PATCH 4.4 07/41] USB: serial: option: add Telit LN920 compositions Greg Kroah-Hartman
2021-10-04 12:51 ` [PATCH 4.4 08/41] USB: serial: option: remove duplicate USB device ID Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 09/41] USB: serial: option: add device id for Foxconn T99W265 Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 10/41] net: hso: fix muxed tty registration Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 11/41] net/mlx4_en: Dont allow aRFS for encapsulated packets Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 12/41] scsi: iscsi: Adjust iface sysfs attr detection Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 13/41] blktrace: Fix uaf in blk_trace access after removing by sysfs Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 14/41] m68k: Double cast io functions to unsigned long Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 15/41] compiler.h: Introduce absolute_pointer macro Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 16/41] net: i825xx: Use absolute_pointer for memcpy from fixed memory location Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 17/41] sparc: avoid stringop-overread errors Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 18/41] qnx4: " Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 19/41] parisc: Use absolute_pointer() to define PAGE0 Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 20/41] arm64: Mark __stack_chk_guard as __ro_after_init Greg Kroah-Hartman
2021-10-04 12:52 ` Greg Kroah-Hartman [this message]
2021-10-04 12:52 ` [PATCH 4.4 22/41] net: 6pack: Fix tx timeout and slot time Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 23/41] spi: Fix tegra20 build with CONFIG_PM=n Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 24/41] qnx4: work around gcc false positive warning bug Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 25/41] tty: Fix out-of-bound vmalloc access in imageblit Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 26/41] mac80211: fix use-after-free in CCMP/GCMP RX Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 27/41] ipvs: check that ip_vs_conn_tab_bits is between 8 and 20 Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 28/41] e100: fix length calculation in e100_get_regs_len Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 29/41] e100: fix buffer overrun in e100_get_regs Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 30/41] ipack: ipoctal: fix stack information leak Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 31/41] ipack: ipoctal: fix tty registration race Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 32/41] ipack: ipoctal: fix tty-registration error handling Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 33/41] ipack: ipoctal: fix missing allocation-failure check Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 34/41] ipack: ipoctal: fix module reference leak Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 35/41] ext4: fix potential infinite loop in ext4_dx_readdir() Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 36/41] EDAC/synopsys: Fix wrong value type assignment for edac_mode Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 37/41] arm64: Extend workaround for erratum 1024718 to all versions of Cortex-A55 Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 38/41] HID: betop: fix slab-out-of-bounds Write in betop_probe Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 39/41] netfilter: ipset: Fix oversized kvmalloc() calls Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 40/41] HID: usbhid: free raw_report buffers in usbhid_stop Greg Kroah-Hartman
2021-10-04 12:52 ` [PATCH 4.4 41/41] net: mdiobus: Fix memory leak in __mdiobus_register Greg Kroah-Hartman
2021-10-04 18:06 ` [PATCH 4.4 00/41] 4.4.286-rc1 review Pavel Machek
2021-10-04 19:50 ` Shuah Khan
2021-10-05 2:13 ` Guenter Roeck
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