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| author | Andy Walls <awalls@md.metrocast.net> | 2010-07-19 01:19:43 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-08-08 23:42:55 -0300 |
| commit | dbe83a3b921328e12b2abe894fc692afba293d7f (patch) | |
| tree | e13443d29b6b929a61584b06dec5f3eff84e2111 /drivers/media/video/cx23885/cx23885-cards.c | |
| parent | 98d109f90fc02ce8baf1c2471ffcf8d66fb0d8e6 (diff) | |
| download | linux-dbe83a3b921328e12b2abe894fc692afba293d7f.tar.gz linux-dbe83a3b921328e12b2abe894fc692afba293d7f.tar.bz2 linux-dbe83a3b921328e12b2abe894fc692afba293d7f.zip | |
V4L/DVB: cx23885: Protect PCI interrupt mask manipulations with a spinlock
This patch encapsulates access to the PCI_INT_MSK register and
dev->pci_irqmask variable and protects them with a spinlock.
This is needed because both the hard IRQ handler and a workhandler
will need to manipulate the mask to disable the AV_CORE interrupt.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx23885/cx23885-cards.c')
| -rw-r--r-- | drivers/media/video/cx23885/cx23885-cards.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/drivers/media/video/cx23885/cx23885-cards.c b/drivers/media/video/cx23885/cx23885-cards.c index 294a7530caf7..d72b48ef940e 100644 --- a/drivers/media/video/cx23885/cx23885-cards.c +++ b/drivers/media/video/cx23885/cx23885-cards.c @@ -1012,7 +1012,6 @@ int cx23885_ir_init(struct cx23885_dev *dev) dev->sd_ir = cx23885_find_hw(dev, CX23885_HW_888_IR); v4l2_subdev_call(dev->sd_cx25840, core, s_io_pin_config, ir_rxtx_pin_cfg_count, ir_rxtx_pin_cfg); - dev->pci_irqmask |= PCI_MSK_IR; /* * For these boards we need to invert the Tx output via the * IR controller to have the LED off while idle @@ -1033,7 +1032,6 @@ int cx23885_ir_init(struct cx23885_dev *dev) } v4l2_subdev_call(dev->sd_cx25840, core, s_io_pin_config, ir_rx_pin_cfg_count, ir_rx_pin_cfg); - dev->pci_irqmask |= PCI_MSK_AV_CORE; break; case CX23885_BOARD_HAUPPAUGE_HVR1250: dev->sd_ir = cx23885_find_hw(dev, CX23885_HW_AV_CORE); @@ -1043,7 +1041,6 @@ int cx23885_ir_init(struct cx23885_dev *dev) } v4l2_subdev_call(dev->sd_cx25840, core, s_io_pin_config, ir_rxtx_pin_cfg_count, ir_rxtx_pin_cfg); - dev->pci_irqmask |= PCI_MSK_AV_CORE; break; case CX23885_BOARD_DVICO_FUSIONHDTV_DVB_T_DUAL_EXP: request_module("ir-kbd-i2c"); @@ -1058,15 +1055,13 @@ void cx23885_ir_fini(struct cx23885_dev *dev) switch (dev->board) { case CX23885_BOARD_HAUPPAUGE_HVR1850: case CX23885_BOARD_HAUPPAUGE_HVR1290: - dev->pci_irqmask &= ~PCI_MSK_IR; - cx_clear(PCI_INT_MSK, PCI_MSK_IR); + cx23885_irq_remove(dev, PCI_MSK_IR); cx23888_ir_remove(dev); dev->sd_ir = NULL; break; case CX23885_BOARD_TEVII_S470: case CX23885_BOARD_HAUPPAUGE_HVR1250: - dev->pci_irqmask &= ~PCI_MSK_AV_CORE; - cx_clear(PCI_INT_MSK, PCI_MSK_AV_CORE); + cx23885_irq_remove(dev, PCI_MSK_AV_CORE); /* sd_ir is a duplicate pointer to the AV Core, just clear it */ dev->sd_ir = NULL; break; @@ -1078,13 +1073,13 @@ void cx23885_ir_pci_int_enable(struct cx23885_dev *dev) switch (dev->board) { case CX23885_BOARD_HAUPPAUGE_HVR1850: case CX23885_BOARD_HAUPPAUGE_HVR1290: - if (dev->sd_ir && (dev->pci_irqmask & PCI_MSK_IR)) - cx_set(PCI_INT_MSK, PCI_MSK_IR); + if (dev->sd_ir) + cx23885_irq_add_enable(dev, PCI_MSK_IR); break; case CX23885_BOARD_TEVII_S470: case CX23885_BOARD_HAUPPAUGE_HVR1250: - if (dev->sd_ir && (dev->pci_irqmask & PCI_MSK_AV_CORE)) - cx_set(PCI_INT_MSK, PCI_MSK_AV_CORE); + if (dev->sd_ir) + cx23885_irq_add_enable(dev, PCI_MSK_AV_CORE); break; } } |