linux-kernel - [PATCH 74/83] hsa/radeon: Adding some error messages

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Message-Id: <1405029279-6894-46-git-send-email-oded.gabbay@amd.com>
Date:	Fri, 11 Jul 2014 00:54:30 +0300
From:	Oded Gabbay <oded.gabbay@...il.com>
To:	David Airlie <airlied@...ux.ie>,
	Alex Deucher <alexander.deucher@....com>,
	Jerome Glisse <j.glisse@...il.com>
Cc:	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	John Bridgman <John.Bridgman@....com>,
	Andrew Lewycky <Andrew.Lewycky@....com>,
	Joerg Roedel <joro@...tes.org>, Ben Goz <ben.goz@....com>,
	Oded Gabbay <oded.gabbay@....com>
Subject: [PATCH 74/83] hsa/radeon: Adding some error messages

From: Ben Goz <ben.goz@....com>

Signed-off-by: Ben Goz <ben.goz@....com>
Signed-off-by: Oded Gabbay <oded.gabbay@....com>
---
 drivers/gpu/hsa/radeon/kfd_chardev.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/hsa/radeon/kfd_chardev.c b/drivers/gpu/hsa/radeon/kfd_chardev.c
index 09c9a61..be89d26 100644
--- a/drivers/gpu/hsa/radeon/kfd_chardev.c
+++ b/drivers/gpu/hsa/radeon/kfd_chardev.c
@@ -137,11 +137,15 @@ kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p, void __user *a
 	if (copy_from_user(&args, arg, sizeof(args)))
 		return -EFAULT;
 
-	if (!access_ok(VERIFY_WRITE, args.read_pointer_address, sizeof(qptr_t)))
+	if (!access_ok(VERIFY_WRITE, args.read_pointer_address, sizeof(qptr_t))) {
+		pr_err("kfd: can't access read pointer");
 		return -EFAULT;
+	}
 
-	if (!access_ok(VERIFY_WRITE, args.write_pointer_address, sizeof(qptr_t)))
+	if (!access_ok(VERIFY_WRITE, args.write_pointer_address, sizeof(qptr_t))) {
+		pr_err("kfd: can't access write pointer");
 		return -EFAULT;
+	}
 
 	q_properties.is_interop = false;
 	q_properties.queue_percent = args.queue_percentage;
-- 
1.9.1

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