[PATCH] habanalabs: use u64_to_user_ptr() for reading user pointers

[Arnd Bergmann]

We cannot cast a 64-bit integer to a pointer on 32-bit architectures
without a warning:

drivers/misc/habanalabs/habanalabs_ioctl.c: In function 'debug_coresight':
drivers/misc/habanalabs/habanalabs_ioctl.c:143:23: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
   input = memdup_user((const void __user *) args->input_ptr,

Use the macro that was defined for this purpose.

Fixes: 315bc055ed56 ("habanalabs: add new IOCTL for debug, tracing and profiling")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/misc/habanalabs/habanalabs_ioctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/habanalabs_ioctl.c b/drivers/misc/habanalabs/habanalabs_ioctl.c
index eeefb22023e9..b7a0eecf6b6c 100644
--- a/drivers/misc/habanalabs/habanalabs_ioctl.c
+++ b/drivers/misc/habanalabs/habanalabs_ioctl.c
@@ -140,7 +140,7 @@ static int debug_coresight(struct hl_device *hdev, struct hl_debug_args *args)
 	params->op = args->op;
 
 	if (args->input_ptr && args->input_size) {
-		input = memdup_user((const void __user *) args->input_ptr,
+		input = memdup_user(u64_to_user_ptr(args->input_ptr),
 					args->input_size);
 		if (IS_ERR(input)) {
 			rc = PTR_ERR(input);
-- 
2.20.0