linux-kernel - [PATCH] hw: Fix permissions for OCRDMA_RESET

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Date:   Tue,  8 Aug 2017 18:56:37 +0300
From:   Anton Vasilyev <vasilyev@...ras.ru>
To:     Selvin Xavier <selvin.xavier@...adcom.com>
Cc:     Anton Vasilyev <vasilyev@...ras.ru>,
        Devesh Sharma <devesh.sharma@...adcom.com>,
        Doug Ledford <dledford@...hat.com>,
        Sean Hefty <sean.hefty@...el.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>,
        Leon Romanovsky <leon@...nel.org>,
        Michael Mera <dev@...haelmera.com>, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: [PATCH] hw: Fix permissions for OCRDMA_RESET_STATS

Debugfs file reset_stats is created with S_IRUSR permissions,
but ocrdma_dbgfs_ops_read() doesn't support OCRDMA_RESET_STATS,
whereas ocrdma_dbgfs_ops_write() supports only OCRDMA_RESET_STATS.

The patch fixes misstype with permissions.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev <vasilyev@...ras.ru>
---
 drivers/infiniband/hw/ocrdma/ocrdma_stats.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
index 66056f9..d42c617 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
@@ -834,7 +834,7 @@ void ocrdma_add_port_stats(struct ocrdma_dev *dev)
 
 	dev->reset_stats.type = OCRDMA_RESET_STATS;
 	dev->reset_stats.dev = dev;
-	if (!debugfs_create_file("reset_stats", S_IRUSR, dev->dir,
+	if (!debugfs_create_file("reset_stats", S_IWUSR, dev->dir,
 				&dev->reset_stats, &ocrdma_dbg_ops))
 		goto err;
 
-- 
2.7.4