From 0cddc7e9a0dd4b77471889d436b4a4ed8d8385bb Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Mon, 30 Sep 2013 10:34:44 -0300 Subject: [PATCH] [media] coda: allow more than four instances on CODA7541 With the new firmware, there are not anymore four register sets, but a single register set, which the driver has to conserve across context switches. This allows to handle more than four instances at the same time. Signed-off-by: Philipp Zabel Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/coda.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c index 449d2fec9e87..28055388f2e8 100644 --- a/drivers/media/platform/coda.c +++ b/drivers/media/platform/coda.c @@ -39,7 +39,7 @@ #define CODA_NAME "coda" -#define CODA_MAX_INSTANCES 4 +#define CODADX6_MAX_INSTANCES 4 #define CODA_FMO_BUF_SIZE 32 #define CODADX6_WORK_BUF_SIZE (288 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024) @@ -2371,7 +2371,13 @@ static int coda_queue_init(void *priv, struct vb2_queue *src_vq, static int coda_next_free_instance(struct coda_dev *dev) { - return ffz(dev->instance_mask); + int idx = ffz(dev->instance_mask); + + if ((idx < 0) || + (dev->devtype->product == CODA_DX6 && idx > CODADX6_MAX_INSTANCES)) + return -EBUSY; + + return idx; } static int coda_open(struct file *file) @@ -2386,8 +2392,8 @@ static int coda_open(struct file *file) return -ENOMEM; idx = coda_next_free_instance(dev); - if (idx >= CODA_MAX_INSTANCES) { - ret = -EBUSY; + if (idx < 0) { + ret = idx; goto err_coda_max; } set_bit(idx, &dev->instance_mask); -- 2.20.1