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[86.30.250.44]) by smtp.gmail.com with ESMTPSA id v4sm6525577wme.6.2019.02.15.02.40.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 15 Feb 2019 02:40:47 -0800 (PST) From: Srinivas Kandagatla To: gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, linux-next@vger.kernel.org, Thierry Escande , Srinivas Kandagatla Subject: [PATCH 2/2] misc: fastrpc: Fix device_open when no session is available Date: Fri, 15 Feb 2019 10:40:07 +0000 Message-Id: <20190215104007.27103-3-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190215104007.27103-1-srinivas.kandagatla@linaro.org> References: <20190215104007.27103-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thierry Escande This change fixes fastrpc_device_open() when no session is available and return an error in such case. Signed-off-by: Thierry Escande Signed-off-by: Srinivas Kandagatla --- drivers/misc/fastrpc.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) -- 2.20.1 diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 4b0db33896df..89aec17738ef 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -1016,10 +1016,19 @@ static int fastrpc_device_open(struct inode *inode, struct file *filp) INIT_LIST_HEAD(&fl->user); fl->tgid = current->tgid; fl->cctx = cctx; + + fl->sctx = fastrpc_session_alloc(cctx); + if (!fl->sctx) { + dev_err(&cctx->rpdev->dev, "No session available\n"); + mutex_destroy(&fl->mutex); + kfree(fl); + + return -EBUSY; + } + spin_lock(&cctx->lock); list_add_tail(&fl->user, &cctx->users); spin_unlock(&cctx->lock); - fl->sctx = fastrpc_session_alloc(cctx); return 0; }