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authorArnd Bergmann <arnd@arndb.de>2012-11-12 22:16:12 +0000
committerArnd Bergmann <arnd@arndb.de>2013-02-14 15:04:33 +0100
commita5d533ee07690b9f904ca7b3732eed3d1134d4bc (patch)
tree90a300fd004eb15b573a87604c3e1414df3b06be /arch/arm/include/asm/dma.h
parent88b62b915b0b7e25870eb0604ed9a92ba4bfc9f7 (diff)
ARM: disable virt_to_bus/virt_to_bus almost everywhere
We are getting a number of warnings about the use of the deprecated bus_to_virt function in drivers using the ARM ISA DMA API: drivers/parport/parport_pc.c: In function 'parport_pc_fifo_write_block_dma': drivers/parport/parport_pc.c:622:3: warning: 'bus_to_virt' is deprecated (declared at arch/arm/include/asm/memory.h:253) [-Wdeprecated-declarations] This is only because that function gets used by the inline set_dma_addr() helper. We know that any driver for the ISA DMA API is correctly using the DMA addresses, so we can change this to use the __bus_to_virt() function instead, which does not warn. After this, there are no remaining drivers that are used on any defconfigs on ARM using virt_to_bus or bus_to_virt, with the exception of the OSS sound driver. That driver is only used on RiscPC, NetWinder and Shark, so we can set ARCH_NO_VIRT_TO_BUS on all other platforms and hide the deprecated functions, which is far more effective than marking them as deprecated, in order to avoid any new users of that code. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <linux@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/dma.h')
-rw-r--r--arch/arm/include/asm/dma.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index 5694a0d6576b..58b8c6a0ab1f 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -105,7 +105,7 @@ extern void set_dma_sg(unsigned int chan, struct scatterlist *sg, int nr_sg);
*/
extern void __set_dma_addr(unsigned int chan, void *addr);
#define set_dma_addr(chan, addr) \
- __set_dma_addr(chan, bus_to_virt(addr))
+ __set_dma_addr(chan, (void *)__bus_to_virt(addr))
/* Set the DMA byte count for this channel
*