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authorColin Ian King <colin.king@canonical.com>2017-09-03 14:06:01 +0100
committerBjorn Andersson <bjorn.andersson@linaro.org>2017-09-04 10:52:30 -0700
commited43d098f9020d6669a00bd26fac807d5c19e202 (patch)
tree90d5f0f36172a3922136152f440952e014b1e90b /drivers/rpmsg/qcom_glink_native.c
parent906cf29cfab5806d32c2a274f86f3d076c0a48be (diff)
downloadlinux-ed43d098f9020d6669a00bd26fac807d5c19e202.tar.gz
rpmsg: glink: initialize ret to zero to ensure error status check is correct
The new switch cases for RPM_CMD_RX_DONE, RPM_CMD_RX_DONE_W_REUSE, RPM_CMD_RX_INTENT_REQ_ACK, RPM_CMD_INTENT and RPM_CMD_RX_INTENT_REQ from 4 recent commits are not setting ret and so a later non-zero check on ret is testing on a garbage value in ret. Fix this by initializing ret to zero. Detected by CoverityScan CID#1455249 ("Uninitialized scalar variable") Fixes: 933b45da5d1d ("rpmsg: glink: Add support for TX intents) Fixes: dacbb35e930f ("glink: Receive and store the remote intent buffers") Fixes: 27b9c5b66b23 ("rpmsg: glink: Request for intents when unavailable") Fixes: 88c6060f5a7f ("rpmsg: glink: Handle remote rx done command") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/rpmsg/qcom_glink_native.c')
-rw-r--r--drivers/rpmsg/qcom_glink_native.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 8bc0d0456a40..5a5e927ea50f 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -957,7 +957,7 @@ static irqreturn_t qcom_glink_native_intr(int irq, void *data)
unsigned int param2;
unsigned int avail;
unsigned int cmd;
- int ret;
+ int ret = 0;
for (;;) {
avail = qcom_glink_rx_avail(glink);
@@ -994,8 +994,6 @@ static irqreturn_t qcom_glink_native_intr(int irq, void *data)
mbox_send_message(glink->mbox_chan, NULL);
mbox_client_txdone(glink->mbox_chan, 0);
-
- ret = 0;
break;
case RPM_CMD_INTENT:
qcom_glink_handle_intent(glink, param1, param2, avail);