From: H Hartley Sweeten Date: Fri, 30 Aug 2013 17:47:03 +0000 (-0700) Subject: staging: comedi: initialize subdevice s->io_bits in postconfig X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=09567cb4373e962a3079bb06352e1e5452d9a340;p=deliverable%2Flinux.git staging: comedi: initialize subdevice s->io_bits in postconfig The subdevice 'io_bits' is a bit mask of the i/o configuration for digital subdevices. '0' values indicate that a channel is configured as an input and '1' values that the channel is an output. Since the subdevice data is kzalloc()'d, all channels default as inputs. Modify __comedi_device_postconfig() so that 'io_bits' is correctly initialized for Digital Output subdevices. Remove all the unnecessary initializations of 's->io_bits' from the drivers. Also, remove the unnecessary initialization of the 's->state'. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c index 317a821b7906..aeef59492ba2 100644 --- a/drivers/staging/comedi/drivers.c +++ b/drivers/staging/comedi/drivers.c @@ -285,6 +285,13 @@ static int __comedi_device_postconfig(struct comedi_device *dev) if (s->type == COMEDI_SUBD_UNUSED) continue; + if (s->type == COMEDI_SUBD_DO) { + if (s->n_chan < 32) + s->io_bits = (1 << s->n_chan) - 1; + else + s->io_bits = 0xffffffff; + } + if (s->len_chanlist == 0) s->len_chanlist = 1; diff --git a/drivers/staging/comedi/drivers/8255.c b/drivers/staging/comedi/drivers/8255.c index 2f070fdbbb1d..5283bb520a1d 100644 --- a/drivers/staging/comedi/drivers/8255.c +++ b/drivers/staging/comedi/drivers/8255.c @@ -288,9 +288,6 @@ int subdev_8255_init(struct comedi_device *dev, struct comedi_subdevice *s, s->insn_bits = subdev_8255_insn; s->insn_config = subdev_8255_insn_config; - s->state = 0; - s->io_bits = 0; - subdev_8255_do_config(dev, s); return 0; diff --git a/drivers/staging/comedi/drivers/addi-data/addi_common.c b/drivers/staging/comedi/drivers/addi-data/addi_common.c index 63dff7729ea8..dc87df032203 100644 --- a/drivers/staging/comedi/drivers/addi-data/addi_common.c +++ b/drivers/staging/comedi/drivers/addi-data/addi_common.c @@ -204,7 +204,6 @@ static int addi_auto_attach(struct comedi_device *dev, s->len_chanlist = devpriv->s_EeParameters.i_NbrDiChannel; s->range_table = &range_digital; - s->io_bits = 0; /* all bits input */ s->insn_config = this_board->di_config; s->insn_read = this_board->di_read; s->insn_write = this_board->di_write; @@ -223,7 +222,6 @@ static int addi_auto_attach(struct comedi_device *dev, s->len_chanlist = devpriv->s_EeParameters.i_NbrDoChannel; s->range_table = &range_digital; - s->io_bits = 0xf; /* all bits output */ /* insn_config - for digital output memory */ s->insn_config = this_board->do_config; diff --git a/drivers/staging/comedi/drivers/addi_apci_3120.c b/drivers/staging/comedi/drivers/addi_apci_3120.c index d804957018ab..67d09e8afb2e 100644 --- a/drivers/staging/comedi/drivers/addi_apci_3120.c +++ b/drivers/staging/comedi/drivers/addi_apci_3120.c @@ -164,7 +164,6 @@ static int apci3120_auto_attach(struct comedi_device *dev, s->maxdata = 1; s->len_chanlist = this_board->i_NbrDiChannel; s->range_table = &range_digital; - s->io_bits = 0; /* all bits input */ s->insn_bits = apci3120_di_insn_bits; /* Allocate and Initialise DO Subdevice Structures */ @@ -176,7 +175,6 @@ static int apci3120_auto_attach(struct comedi_device *dev, s->maxdata = this_board->i_DoMaxdata; s->len_chanlist = this_board->i_NbrDoChannel; s->range_table = &range_digital; - s->io_bits = 0xf; /* all bits output */ s->insn_bits = apci3120_do_insn_bits; /* Allocate and Initialise Timer Subdevice Structures */ diff --git a/drivers/staging/comedi/drivers/adl_pci6208.c b/drivers/staging/comedi/drivers/adl_pci6208.c index a67ad57cefcb..28975061134b 100644 --- a/drivers/staging/comedi/drivers/adl_pci6208.c +++ b/drivers/staging/comedi/drivers/adl_pci6208.c @@ -221,7 +221,6 @@ static int pci6208_auto_attach(struct comedi_device *dev, val = inw(dev->iobase + PCI6208_DIO); val = (val & PCI6208_DIO_DO_MASK) >> PCI6208_DIO_DO_SHIFT; s->state = val; - s->io_bits = 0x0f; dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx\n", dev->driver->driver_name, dev->board_name, dev->iobase); diff --git a/drivers/staging/comedi/drivers/adl_pci9118.c b/drivers/staging/comedi/drivers/adl_pci9118.c index 22196ada0362..7d2cff3eab85 100644 --- a/drivers/staging/comedi/drivers/adl_pci9118.c +++ b/drivers/staging/comedi/drivers/adl_pci9118.c @@ -2075,7 +2075,6 @@ static int pci9118_common_attach(struct comedi_device *dev, int disable_irq, s->maxdata = 1; s->len_chanlist = 4; s->range_table = &range_digital; - s->io_bits = 0; /* all bits input */ s->insn_bits = pci9118_insn_bits_di; s = &dev->subdevices[3]; @@ -2085,7 +2084,6 @@ static int pci9118_common_attach(struct comedi_device *dev, int disable_irq, s->maxdata = 1; s->len_chanlist = 4; s->range_table = &range_digital; - s->io_bits = 0xf; /* all bits output */ s->insn_bits = pci9118_insn_bits_do; devpriv->valid = 1; diff --git a/drivers/staging/comedi/drivers/adv_pci1710.c b/drivers/staging/comedi/drivers/adv_pci1710.c index f84df46d326a..fe087253c870 100644 --- a/drivers/staging/comedi/drivers/adv_pci1710.c +++ b/drivers/staging/comedi/drivers/adv_pci1710.c @@ -1320,7 +1320,6 @@ static int pci1710_auto_attach(struct comedi_device *dev, s->maxdata = 1; s->len_chanlist = this_board->n_dichan; s->range_table = &range_digital; - s->io_bits = 0; /* all bits input */ s->insn_bits = pci171x_insn_bits_di; subdev++; } @@ -1333,9 +1332,6 @@ static int pci1710_auto_attach(struct comedi_device *dev, s->maxdata = 1; s->len_chanlist = this_board->n_dochan; s->range_table = &range_digital; - /* all bits output */ - s->io_bits = (1 << this_board->n_dochan) - 1; - s->state = 0; s->insn_bits = pci171x_insn_bits_do; subdev++; } diff --git a/drivers/staging/comedi/drivers/amplc_dio200_common.c b/drivers/staging/comedi/drivers/amplc_dio200_common.c index c1f723e86146..8c6fa1e62abf 100644 --- a/drivers/staging/comedi/drivers/amplc_dio200_common.c +++ b/drivers/staging/comedi/drivers/amplc_dio200_common.c @@ -1022,8 +1022,6 @@ static int dio200_subdev_8255_init(struct comedi_device *dev, s->maxdata = 1; s->insn_bits = dio200_subdev_8255_bits; s->insn_config = dio200_subdev_8255_config; - s->state = 0; - s->io_bits = 0; dio200_subdev_8255_set_dir(dev, s); return 0; } diff --git a/drivers/staging/comedi/drivers/icp_multi.c b/drivers/staging/comedi/drivers/icp_multi.c index 3889d23292d0..17f9c0665469 100644 --- a/drivers/staging/comedi/drivers/icp_multi.c +++ b/drivers/staging/comedi/drivers/icp_multi.c @@ -548,7 +548,6 @@ static int icp_multi_auto_attach(struct comedi_device *dev, s->maxdata = 1; s->len_chanlist = 16; s->range_table = &range_digital; - s->io_bits = 0; s->insn_bits = icp_multi_insn_bits_di; s = &dev->subdevices[3]; @@ -558,8 +557,6 @@ static int icp_multi_auto_attach(struct comedi_device *dev, s->maxdata = 1; s->len_chanlist = 8; s->range_table = &range_digital; - s->io_bits = 0xff; - s->state = 0; s->insn_bits = icp_multi_insn_bits_do; s = &dev->subdevices[4]; diff --git a/drivers/staging/comedi/drivers/me_daq.c b/drivers/staging/comedi/drivers/me_daq.c index a6f6d4a46587..00ebf4dd78fb 100644 --- a/drivers/staging/comedi/drivers/me_daq.c +++ b/drivers/staging/comedi/drivers/me_daq.c @@ -545,7 +545,6 @@ static int me_auto_attach(struct comedi_device *dev, s->range_table = &range_digital; s->insn_bits = me_dio_insn_bits; s->insn_config = me_dio_insn_config; - s->io_bits = 0; dev_info(dev->class_dev, "%s: %s attached\n", dev->driver->driver_name, dev->board_name); diff --git a/drivers/staging/comedi/drivers/ni_660x.c b/drivers/staging/comedi/drivers/ni_660x.c index 3607336dafe2..8a991dcab24a 100644 --- a/drivers/staging/comedi/drivers/ni_660x.c +++ b/drivers/staging/comedi/drivers/ni_660x.c @@ -1213,7 +1213,6 @@ static int ni_660x_auto_attach(struct comedi_device *dev, s->range_table = &range_digital; s->insn_bits = ni_660x_dio_insn_bits; s->insn_config = ni_660x_dio_insn_config; - s->io_bits = 0; /* all bits default to input */ /* we use the ioconfig registers to control dio direction, so zero output enables in stc dio control reg */ ni_660x_write_register(dev, 0, 0, STCDIOControl); diff --git a/drivers/staging/comedi/drivers/ni_daq_700.c b/drivers/staging/comedi/drivers/ni_daq_700.c index 404f83de276d..0ac875f18787 100644 --- a/drivers/staging/comedi/drivers/ni_daq_700.c +++ b/drivers/staging/comedi/drivers/ni_daq_700.c @@ -212,7 +212,6 @@ static int daq700_auto_attach(struct comedi_device *dev, s->maxdata = 1; s->insn_bits = daq700_dio_insn_bits; s->insn_config = daq700_dio_insn_config; - s->state = 0; s->io_bits = 0x00ff; /* DAQCard-700 ai */