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Subject[PATCH] ACPI: apei: Cast u64 to unsigned long, fix compile warning
In today linux-net I got a compile warning in acpi/apei

drivers/acpi/apei/erst.c: In function ‘erst_exec_move_data’:
drivers/acpi/apei/erst.c:273: warning: cast to pointer from integer of different size
drivers/acpi/apei/erst.c:274: warning: cast to pointer from integer of different size

The problem is that apei_exec_context->dst_base type is u64.
But in 32 bits architecture void * is 32 bits long.
Casting it to unsigned long solves the issue

Signed-off-by: Javier Martinez Canillas <>
drivers/acpi/apei/erst.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index a4904f1..37d7a05 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -270,8 +270,8 @@ static int erst_exec_move_data(struct apei_exec_context *ctx,
rc = __apei_exec_read_register(entry, &offset);
if (rc)
return rc;
- memmove((void *)ctx->dst_base + offset,
- (void *)ctx->src_base + offset,
+ memmove((void *)(unsigned long)ctx->dst_base + offset,
+ (void *)(unsigned long)ctx->src_base + offset,

return 0;

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