If no RX buffer is available in state 1, jump to state
0 again. This will produce an incredible amount of
warnings, but it is not supposed to happen anyway.
Signed-off-by: Julian Andres Klode <jak@xxxxxxxxxxxxx>
---
drivers/staging/nvec/nvec.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c
index 13934d9..83ad1ef 100644
--- a/drivers/staging/nvec/nvec.c
+++ b/drivers/staging/nvec/nvec.c
@@ -558,6 +558,11 @@ static irqreturn_t nvec_interrupt(int irq, void *dev)
nvec_invalid_flags(nvec, status, true);
} else {
nvec->rx = nvec_msg_alloc(nvec, NVEC_MSG_RX);
+ /* Should not happen in a normal world */
+ if (unlikely(nvec->rx == NULL)) {
+ nvec->state = 0;
+ break;
+ }
nvec->rx->data[0] = received;
nvec->rx->pos = 1;
nvec->state = 2;
--
1.7.5.4
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