From: Arnd Bergmann Date: Mon, 17 Jun 2019 12:41:33 +0000 (+0200) Subject: habanalabs: use u64_to_user_ptr() for reading user pointers X-Git-Tag: v5.2-rc6~13^2^2 X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fkernel%2Fstable.git;a=commitdiff_plain;h=f99bc332c713b7672bad5236060b02f0c41c7242 habanalabs: use u64_to_user_ptr() for reading user pointers 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 Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay --- diff --git a/drivers/misc/habanalabs/habanalabs_ioctl.c b/drivers/misc/habanalabs/habanalabs_ioctl.c index eeefb22023e9a..b7a0eecf6b6c6 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);