Attempting to find room for a packet that's bigger than the fifo will
never succeed and the calling process will be sleeping forever in the
loop, waiting for enough room. So fail early instead.
Reported-by: Courtney Cavin <courtney.ca...@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.anders...@sonymobile.com>
---
drivers/soc/qcom/smd.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/soc/qcom/smd.c b/drivers/soc/qcom/smd.c
index 18964f154383..88353bda1ea4 100644
--- a/drivers/soc/qcom/smd.c
+++ b/drivers/soc/qcom/smd.c
@@ -723,6 +723,10 @@ int qcom_smd_send(struct qcom_smd_channel *channel, const
void *data, int len)
if (channel->info_word && len % 4)
return -EINVAL;
+ /* Reject packets that are too big */
+ if (tlen >= channel->fifo_size)
+ return -EINVAL;
+
ret = mutex_lock_interruptible(&channel->tx_lock);
if (ret)
return ret;
--
1.8.2.2
--
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