[xen staging] xen/riscv: fix type mismatch in read_atomic_size()

[patchbot@xxxxxxx]

commit 4e56d0a9f9c5612c724299136c8ef55bc436419b
Author:     Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
AuthorDate: Mon Sep 9 13:42:57 2024 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Sep 9 13:42:57 2024 +0200

    xen/riscv: fix type mismatch in read_atomic_size()
    
    Correct a typo in read_atomic_size() where a 64-bit result
    was incorrectly cast to a `uint32_t` instead of `uint64_t`
    in the case of 8-byte reads.
    
    Fixes: 3cd46d4ec8b9 ("xen/riscv: introduce atomic.h")
    Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/riscv/include/asm/atomic.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/riscv/include/asm/atomic.h 
b/xen/arch/riscv/include/asm/atomic.h
index 31b91a79c8..41f03b2e0c 100644
--- a/xen/arch/riscv/include/asm/atomic.h
+++ b/xen/arch/riscv/include/asm/atomic.h
@@ -45,7 +45,7 @@ static always_inline void read_atomic_size(const volatile 
void *p,
     case 2: *(uint16_t *)res = readw(p); break;
     case 4: *(uint32_t *)res = readl(p); break;
 #ifndef CONFIG_RISCV_32
-    case 8: *(uint32_t *)res = readq(p); break;
+    case 8: *(uint64_t *)res = readq(p); break;
 #endif
     default: __bad_atomic_size(); break;
     }
--
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