linux-kernel - [PATCH] staging: vt6655: wpactl.c: Fix sparse warnings

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Date:	Thu, 7 Aug 2014 23:08:34 +0100
From:	Martin Berglund <martin@...sta.net>
To:	Forest Bond <forest@...ttletooquiet.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Guido Martínez <guido@...guardiasur.com.ar>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: vt6655: wpactl.c: Fix sparse warnings

Add missing __user macro casting in the function wpa_set_keys.
This is okay since the function handles the possibility of
param->u.wpa_key.key and param->u.wpa_key.seq pointing to
kernelspace using a flag, fcpfkernel.

Signed-off-by: Martin Berglund <martin@...sta.net>
---
This was submitted as part of Eudyptula challenge task 16

 drivers/staging/vt6655/wpactl.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/vt6655/wpactl.c b/drivers/staging/vt6655/wpactl.c
index 5f454ca..d75dd79 100644
--- a/drivers/staging/vt6655/wpactl.c
+++ b/drivers/staging/vt6655/wpactl.c
@@ -224,7 +224,9 @@ int wpa_set_keys(PSDevice pDevice, void *ctx,
 	} else {
 		spin_unlock_irq(&pDevice->lock);
 		if (param->u.wpa_key.key &&
-		    copy_from_user(&abyKey[0], param->u.wpa_key.key, param->u.wpa_key.key_len)) {
+		    copy_from_user(&abyKey[0],
+				   (void __user *)param->u.wpa_key.key,
+				   param->u.wpa_key.key_len)) {
 			spin_lock_irq(&pDevice->lock);
 			return -EINVAL;
 		}
@@ -262,7 +264,9 @@ int wpa_set_keys(PSDevice pDevice, void *ctx,
 	} else {
 		spin_unlock_irq(&pDevice->lock);
 		if (param->u.wpa_key.seq &&
-		    copy_from_user(&abySeq[0], param->u.wpa_key.seq, param->u.wpa_key.seq_len)) {
+		    copy_from_user(&abySeq[0],
+				   (void __user *)param->u.wpa_key.seq,
+				   param->u.wpa_key.seq_len)) {
 			spin_lock_irq(&pDevice->lock);
 			return -EINVAL;
 		}
-- 
1.7.10.4

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