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| author | Guenter Roeck <linux@roeck-us.net> | 2021-09-08 22:00:33 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-06 15:05:07 +0200 |
| commit | 2de807c0b6250becfdbd5a8945410b10f1293731 (patch) | |
| tree | 4ac42163619f02ec2a8b2ed935ed46b57a085fe6 /arch/alpha | |
| parent | 0a52ba738f9448943333abf8cdbad0342b2e3ef7 (diff) | |
| download | linux-stable-2de807c0b6250becfdbd5a8945410b10f1293731.tar.gz linux-stable-2de807c0b6250becfdbd5a8945410b10f1293731.tar.bz2 linux-stable-2de807c0b6250becfdbd5a8945410b10f1293731.zip | |
alpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile
[ 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>
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/include/asm/io.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h index 9995bed6e92e..204c4fb69ee1 100644 --- a/arch/alpha/include/asm/io.h +++ b/arch/alpha/include/asm/io.h @@ -61,7 +61,7 @@ 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; } @@ -71,7 +71,7 @@ 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; @@ -112,7 +112,7 @@ 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; |