linux-kernel - [PATCH] habanalabs: correctly cast u64 to void*

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Date:   Sun, 31 May 2020 12:15:47 +0300
From:   Oded Gabbay <oded.gabbay@...il.com>
To:     linux-kernel@...r.kernel.org, SW_Drivers@...ana.ai
Cc:     gregkh@...uxfoundation.org
Subject: [PATCH] habanalabs: correctly cast u64 to void*

Use the u64_to_user_ptr(x) kernel macro to correctly cast u64 to void*

Reported-by: kbuild test robot <lkp@...el.com>
Signed-off-by: Oded Gabbay <oded.gabbay@...il.com>
---
 drivers/misc/habanalabs/command_submission.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/command_submission.c b/drivers/misc/habanalabs/command_submission.c
index 75d8302352e5..f82974a916c3 100644
--- a/drivers/misc/habanalabs/command_submission.c
+++ b/drivers/misc/habanalabs/command_submission.c
@@ -789,7 +789,7 @@ static int cs_ioctl_signal_wait(struct hl_fpriv *hpriv, enum hl_cs_type cs_type,
 		size_to_copy = chunk->num_signal_seq_arr *
 				sizeof(*signal_seq_arr);
 		if (copy_from_user(signal_seq_arr,
-					(void __user *) chunk->signal_seq_arr,
+					u64_to_user_ptr(chunk->signal_seq_arr),
 					size_to_copy)) {
 			dev_err(hdev->dev,
 				"Failed to copy signal seq array from user\n");
-- 
2.17.1