diff options
Diffstat (limited to 'arch/x86/kernel/eisa.c')
| -rw-r--r-- | arch/x86/kernel/eisa.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/x86/kernel/eisa.c b/arch/x86/kernel/eisa.c index e963344b0449..9535a6507db7 100644 --- a/arch/x86/kernel/eisa.c +++ b/arch/x86/kernel/eisa.c @@ -2,6 +2,7 @@ /* * EISA specific code */ +#include <linux/cc_platform.h> #include <linux/ioport.h> #include <linux/eisa.h> #include <linux/io.h> @@ -10,15 +11,15 @@ static __init int eisa_bus_probe(void) { - void __iomem *p; + u32 *p; - if (xen_pv_domain() && !xen_initial_domain()) + if ((xen_pv_domain() && !xen_initial_domain()) || cc_platform_has(CC_ATTR_GUEST_SEV_SNP)) return 0; - p = ioremap(0x0FFFD9, 4); - if (p && readl(p) == 'E' + ('I' << 8) + ('S' << 16) + ('A' << 24)) + p = memremap(0x0FFFD9, 4, MEMREMAP_WB); + if (p && *p == 'E' + ('I' << 8) + ('S' << 16) + ('A' << 24)) EISA_bus = 1; - iounmap(p); + memunmap(p); return 0; } subsys_initcall(eisa_bus_probe); |