[PATCH] staging: nvec: Avoid the use of BUG_ON

[Laura Garcia Liebana <nevola@gmail.com>]

Prevent a kernel panic by avoiding the use of the BUG_ON macro and using the
WARN_ON macro instead. Checkpatch detected this issue.

Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
---
 drivers/staging/nvec/nvec.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c
index c335ae2..3b5b94f 100644
--- a/drivers/staging/nvec/nvec.c
+++ b/drivers/staging/nvec/nvec.c
@@ -641,11 +641,21 @@ static irqreturn_t nvec_interrupt(int irq, void *dev)
 			nvec_msg_free(nvec, nvec->rx);
 			nvec->state = 3;
 			nvec_tx_set(nvec);
-			BUG_ON(nvec->tx->size < 1);
+			if (WARN_ON(nvec->tx->size < 1)) {
+				dev_err(nvec->dev,
+					"Invalid TX size\n");
+				nvec->state = 0;
+				break;
+			}
 			to_send = nvec->tx->data[0];
 			nvec->tx->pos = 1;
 		} else if (status == (I2C_SL_IRQ)) {
-			BUG_ON(nvec->rx == NULL);
+			if (WARN_ON(!nvec->rx)) {
+				dev_err(nvec->dev,
+					"Invalid RX\n");
+				nvec->state = 0;
+				break;
+			}
 			nvec->rx->data[1] = received;
 			nvec->rx->pos = 2;
 			nvec->state = 4;
-- 
2.7.0