From 2a8f96085449f3aa6fe99b27d7ee506e808059b9 Mon Sep 17 00:00:00 2001 From: Abylay Ospan Date: Sat, 6 Mar 2010 15:46:39 -0300 Subject: [PATCH] V4L/DVB: configurable IRQ from CAM IRQ from CAM disabled by default. In some environment enabled IRQ can cause of machine freeze. Signed-off-by: Abylay Ospan Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx23885/cimax2.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/cx23885/cimax2.c b/drivers/media/video/cx23885/cimax2.c index d4a9d2c5947..c95e7bc1474 100644 --- a/drivers/media/video/cx23885/cimax2.c +++ b/drivers/media/video/cx23885/cimax2.c @@ -60,12 +60,18 @@ static unsigned int ci_dbg; module_param(ci_dbg, int, 0644); MODULE_PARM_DESC(ci_dbg, "Enable CI debugging"); +static unsigned int ci_irq_enable; +module_param(ci_irq_enable, int, 0644); +MODULE_PARM_DESC(ci_irq_enable, "Enable IRQ from CAM"); + #define ci_dbg_print(args...) \ do { \ if (ci_dbg) \ printk(KERN_DEBUG args); \ } while (0) +#define ci_irq_flags() (ci_irq_enable ? NETUP_IRQ_IRQAM : 0) + /* stores all private variables for communication with CI */ struct netup_ci_state { struct dvb_ca_en50221 ca; @@ -392,7 +398,7 @@ int netup_poll_ci_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open if (0 != slot) return -EINVAL; - netup_ci_set_irq(en50221, open ? (NETUP_IRQ_DETAM | NETUP_IRQ_IRQAM) + netup_ci_set_irq(en50221, open ? (NETUP_IRQ_DETAM | ci_irq_flags()) : NETUP_IRQ_DETAM); return state->status; @@ -429,7 +435,7 @@ int netup_ci_init(struct cx23885_tsport *port) 0x01, /* power on (use it like store place) */ 0x00, /* RFU */ 0x00, /* int status read only */ - NETUP_IRQ_IRQAM | NETUP_IRQ_DETAM, /* DETAM, IRQAM unmasked */ + ci_irq_flags() | NETUP_IRQ_DETAM, /* DETAM, IRQAM unmasked */ 0x05, /* EXTINT=active-high, INT=push-pull */ 0x00, /* USCG1 */ 0x04, /* ack active low */ @@ -470,7 +476,7 @@ int netup_ci_init(struct cx23885_tsport *port) state->ca.poll_slot_status = netup_poll_ci_slot_status; state->ca.data = state; state->priv = port; - state->current_irq_mode = NETUP_IRQ_IRQAM | NETUP_IRQ_DETAM; + state->current_irq_mode = ci_irq_flags() | NETUP_IRQ_DETAM; ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr, 0, &cimax_init[0], 34); -- 2.41.0