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Commit c6360e7e authored by Arun Prakash's avatar Arun Prakash
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diag: Preventing deadlock by adding spin_unlock 



Adding spin_unlock_irqrestore in mhi_write to avoid deadlock.

Change-Id: If1525d46066a2bcb49e764852034f39a1419eb44
Signed-off-by: default avatarArun Prakash <app@codeaurora.org>
parent 432c6504

drivers/char/diag/diagfwd_mhi.c

+3 −1
Original line number Diff line number Diff line
@@ -521,8 +521,10 @@ static int mhi_write(int id, unsigned char *buf, int len, int ctxt) 
	spin_lock_irqsave(&ch->lock, flags);

	err = mhi_buf_tbl_add(&diag_mhi[id], TYPE_MHI_WRITE_CH, buf,

			      len);

	if (err)

	if (err) {

		spin_unlock_irqrestore(&ch->lock, flags);

		goto fail;

	}



	err = mhi_queue_transfer(diag_mhi[id].mhi_dev, DMA_TO_DEVICE, buf,

				len, mhi_flags);