Before reading which slot was captured to by examining the module status
(VnMS) register, make sure something was captured at all by examining
the interrupt status register (VnINTS).
Failing this a buffer maybe completed before it was captured too.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
#define VNIE_FIE (1 << 4)
#define VNIE_EFE (1 << 1)
+/* Video n Interrupt Status Register bits */
+#define VNINTS_FIS (1 << 4)
+
/* Video n Data Mode Register bits */
#define VNDMR_A8BIT(n) (((n) & 0xff) << 24)
#define VNDMR_A8BIT_MASK (0xff << 24)
rvin_ack_interrupt(vin);
handled = 1;
+ /* Nothing to do if nothing was captured. */
+ if (!(int_status & VNINTS_FIS))
+ goto done;
+
/* Nothing to do if capture status is 'STOPPED' */
if (vin->state == STOPPED) {
vin_dbg(vin, "IRQ while state stopped\n");