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Commit 4d6adfd3 authored by Mitchel Humpherys's avatar Mitchel Humpherys Committed by Sathish Ambley
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msm: ADSPRPC: Validate channel status before write 



Make sure that the channel is not closed before attempting
to write to the SMD channel.

Change-Id: I4ff4f57159c163ab4d330dbf4634ebf0b50931a2
Acked-by: default avatarSathish Ambley <sambley@qti.qualcomm.com>
Signed-off-by: default avatarMitchel Humpherys <mitchelh@codeaurora.org>
parent 88596d4c

drivers/char/adsprpc.c

+5 −0
Original line number Diff line number Diff line
@@ -963,6 +963,10 @@ static int fastrpc_invoke_send(struct smq_invoke_ctx *ctx, 
	struct smq_msg msg;

	struct fastrpc_file *fl = ctx->fl;

	int err = 0, len;



	VERIFY(err, 0 != fl->apps->channel[fl->cid].chan);

	if (err)

		goto bail;

	msg.pid = current->tgid;

	msg.tid = current->pid;

	if (kernel)
@@ -976,6 +980,7 @@ static int fastrpc_invoke_send(struct smq_invoke_ctx *ctx, 
	len = smd_write(fl->apps->channel[fl->cid].chan, &msg, sizeof(msg));

	spin_unlock(&fl->apps->hlock);

	VERIFY(err, len == sizeof(msg));

 bail:

	return err;

}