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arc: iounmap() arg is volatile

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[ Upstream commit c44f15c1c09481d50fd33478ebb5b8284f8f5edb ]

Add 'volatile' to iounmap()'s argument to prevent build warnings.
This make it the same as other major architectures.

Placates these warnings: (12 such warnings)

../drivers/video/fbdev/riva/fbdev.c: In function 'rivafb_probe':
../drivers/video/fbdev/riva/fbdev.c:2067:42: error: passing argument 1 of 'iounmap' discards 'volatile' qualifier from pointer target type [-Werror=discarded-qualifiers]
 2067 |                 iounmap(default_par->riva.PRAMIN);

Fixes: 1162b0701b ("ARC: I/O and DMA Mappings")
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: [email protected]
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Randy Dunlap 2022-10-09 19:28:46 -07:00 • committed by Greg Kroah-Hartman
commit ccaeef126e
2 changed files with 2 additions and 2 deletions
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2
arch/arc/include/asm/io.h
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@ -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);
#define ioremap_nocache(phy, sz) ioremap(phy, sz)
#define ioremap_wc(phy, sz) ioremap(phy, sz)

2
arch/arc/mm/ioremap.c
View file

@ -93,7 +93,7 @@ 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))