- 26 Aug, 2013 34 commits
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Ian Abbott authored
`do_dev_config()` is called from the comedi 'attach' handler, `bonding_attach()`. The device private data structure contains a dynamically allocated array of pointers to "bonded" device structures which grows during the `do_dev_config()` call. The length of this array is in `devpriv->ndevs`. It currently uses a local function `realloc()` to allocate a new array, copy the old contents over and free the old array. It should be more efficient to use `krealloc()` as it may be able to use slack space at the end of the previous array and avoid a copy. The old `realloc()` function always freed the old buffer which meant that if it failed to allocate the new buffer it would lose the contents of the old buffer. Unfortunately, that contained pointers to more dynamically allocated memory, leading to a memory leak. If `krealloc()` fails, keep the old buffer and avoid the memory leak. The aforementioned pointers to more dynamically allocated memory will be cleaned up by the 'detach' handler, `bonding_detach()` which will be called by the comedi core as a consequence of `krealloc()` failing in `do_dev_config()`. Signed-off-by:
Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ian Abbott authored
If a DIO subdevice has more than 32 channels, its 'insn_bits' handler is supposed to take account of the base channel from `CR_CHAN(insn->chanspec)`. (The comedi core will adjust the base channel to 0 and shift the mask and data to compensate if the subdevice has less than or equal to 32 channels.) The "comedi_bond" driver currently ignores the base channel and assumes it is 0. Replace `comedi_dio_bitfield()` in the "kcomedilib" module with `comedi_dio_bitfield2()` that takes account of the base channel, and rewrite the "comedi_bond" driver's 'insn_bits' handler (`bonding_dio_insn_bits()`) to take account of the base channel and use the new function. No other modules use `comedi_dio_bitfield()` so it is safe to replace it with `comedi_dio_bitfield2()`. The name follows that of the equivalent function in the user-space comedilib. If the base channel is non-zero and the subdevice has less than or equal to 32 channels it needs to adjust things in the same way as the comedi core (same as `parse_insn()` in "comedi_fops.c") due to most drivers ignoring the base channel. Signed-off-by:
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Ian Abbott authored
The DIO subdevice of the "comedi_bond" device attempts to remember the directions of DIO channels itself in the `io_bits` member of the subdevice, but that is only large enough for the first 32 channels and it might not be accurate anyway as changing the direction of one channel may have affected a whole group of channels and we have no idea of the initial directions before the "bonded" device was linked to the the "comedi_bond" device. It would be better to ask the bonded device for this information when handling a `INSN_CONFIG_DIO_QUERY` configuration instruction. Add new function `comedi_dio_get_config()` to the "kcomedilib" module to allow us to get the DIO direction of a channel and use it. Signed-off-by:
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Ian Abbott authored
The `while` loop in `bonding_detach()` doesn't need to check `devpriv->devs` each time round the loop. Move the test outside the loop. The enclosing `if (devpriv)` can be changed to `if (devpriv && devpriv->devs)` as everything in this `if` statement is associated with `devpriv->devs` anyway. Signed-off-by:
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Ian Abbott authored
The comedi core will free `dev->private` if it is non-NULL after calling the "detach" handler (`bonding_detach()`), so don't bother freeing it in `bonding_detach()`. Signed-off-by:
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Ian Abbott authored
The `subdev_type` member of `struct bonded_device` is set but not used. Remove it. Signed-off-by:
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Ian Abbott authored
The private data structure (`struct comedi_bond_private`) for the overall "comedi_bond" device maps each channel individually to a pointer to the `struct bonded_device` it belongs to via array member `chan_id_dev_map[MAX_CHANS]`. This speeds up look-ups from channel number to bonded device a bit, but the length of the array used to look this up is currently fixed at `MAX_CHANS` (256) and there are no overflow checks when filling the array. In practice, there will only be a few bonded devices (actually bonded subdevices) and it is practical to just skip through the list until we reach the one containing the desired channel. The only place where the bonded device is looked up from the channel number is in `bonding_dio_insn_config()`. Change it to do the look-up by skipping through the list of bonded devices and remove the `chan_id_dev_map[]` member. The `chanid_offset` member of `struct bonded_device` is also no longer needed as the value can be derived while skipping through the list of bonded devices, so remove that member as well. Signed-off-by:
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Ian Abbott authored
`do_dev_config()` currently records the comedi minor devices it has opened by setting `devs_opened[minor]` to the pointer returned by `comedi_open()`. This is checked to avoid opening the same minor device twice. The pointer values in `devs_opened[]` aren't needed; we only need to record which minor device numbers are being used. Change `devs_opened` to a bitmap (declared with `DECLARE_BITMAP()`) of length `COMEDI_NUM_BOARD_MINORS` as the minor device numbers are range-checked to fit in a bitmap of this length. Use `test_and_set_bit()` to record the minor device numbers we attempt to open with `comedi_open()`. `bonding_detach()` calls `comedi_close()` to close the comedi minor devices. Since the minor device numbers may be repeated in its list of bonded subdevices, it currently uses a simple `unsigned long devs_closed` variable as a bitmap to keep track of which minor device numbers it has already closed to avoid closing them twice. As a single `unsigned long` consists of less than `COMEDI_NUM_BOARD_MINORS` bits on a 32-bit machine, change `devs_closed to a bitmap of this length using `DECLARE_BITMAP()` and use `test_and_set_bit()` to avoid calling `comedi_close()` more than once for each minor device number in use. Signed-off-by:
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Ian Abbott authored
`bonding_attach()` is the comedi "attach" handler for the driver. Any non-negative return value is treated as successful, but 0 is the preferred return value on success. Signed-off-by:
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Ian Abbott authored
Change `do_dev_config()` to return an error code on failure and 0 on success, instead of 0 on failure and 1 on success. Signed-off-by:
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Ian Abbott authored
The `char file[]` variable in `do_dev_config()` doesn't need to be initialized as it gets overwritten with a `snprintf()`. It just needs to be long enough. Signed-off-by:
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Ian Abbott authored
Signed-off-by:
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Ian Abbott authored
Omit the fanciful prose from the MODULE_DESCRIPTION() line and combine concantenated string literals. Signed-off-by:
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Ian Abbott authored
Reformat some comments according to CodingStyle and remove some comments inherited from the comedi 'skel' example driver. Signed-off-by:
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Chen Gang authored
DGNC is based on PCI, so need add related dependency, or when compiled with PCI disabled, it will be fail. The related error (randconfig for PCI disabled under s390): drivers/staging/dgnc/dgnc_cls.c:1394:2: error: implicit declaration of function ‘ioremap’ [-Werror=implicit-function-declaration] drivers/staging/dgnc/dgnc_cls.c:1407:3: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration] Cc: Lidza Louina <lidza.louina@gmail.com> Signed-off-by:
Chen Gang <gang.chen@asianux.com> Signed-off-by:
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Masanari Iida authored
Correct spelling typo in comments and debug messages. Signed-off-by:
Masanari Iida <standby24x7@gmail.com> Signed-off-by:
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navin patidar authored
struct pt_regs pointer is no longer passed as a irq handler argument. and also remove unnecessary macros. Signed-off-by:
navin patidar <navinp@cdac.in> Signed-off-by:
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Rupesh Gujare authored
Max. TX frame size supported is changed to 760 bytes. Signed-off-by:
Rupesh Gujare <rupesh.gujare@atmel.com> Signed-off-by:
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Rupesh Gujare authored
Make sure that we return negative value if oz_build_frame() returns NULL. Signed-off-by:
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Rupesh Gujare authored
We have icreased interrupt end point buffer size to 512 bytes, Change variable data type to accomodate it. Signed-off-by:
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Rupesh Gujare authored
Increase interrupt end point buffer size & convert hard coded value to macro for better readability. Signed-off-by:
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Rupesh Gujare authored
Use macro instead of hard coded value for readability. Signed-off-by:
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Rupesh Gujare authored
Check for valid config number before completing set interface. Signed-off-by:
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Malcolm Priestley authored
Signed-off-by:
Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by:
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Malcolm Priestley authored
Only one of vnt_rts*/vnt_cts* structures are accessed at any one time. Join these structures in to a single union. These will eventually form the tail structure of vnt_tx_buffer and include structures vnt_tx_datahead* Structures in s_vFillCTSHead will join in next patch series. Signed-off-by:
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Malcolm Priestley authored
Parse out vnt_rts_a_fb code to new function vnt_rxtx_rts_a_fb_head. Signed-off-by:
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Malcolm Priestley authored
Parse out vnt_rts_ab code to new function vnt_rxtx_rts_ab_head. Signed-off-by:
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Malcolm Priestley authored
Parse out vnt_rts_g_fb code to new function vnt_rxtx_rts_g_fb_head. Signed-off-by:
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Malcolm Priestley authored
Parse out vnt_rts_g code to new function vnt_rxtx_rts_g_head. Also create a new common calling function vnt_fill_ieee80211_rts to fill the ieee80211_rts structure. Signed-off-by:
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Malcolm Priestley authored
If pvRrvTime is NULL the whole structure is NULL, so remove if statements and consolidate to single return. Signed-off-by:
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Malcolm Priestley authored
As result of patch vt6656: rxtx.c s_vFillCTSHead remove dead code bDisCRC bDisCRC is unused. Signed-off-by:
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Malcolm Priestley authored
As result of patch vt6656: device.h Remove dead code bSoftwareGenCrcErr. dDiscCRC is unused. Signed-off-by:
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Malcolm Priestley authored
As result of patch vt6656: device.h Remove dead code bSoftwareGenCrcErr. dDiscCRC is unused. Signed-off-by:
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Malcolm Priestley authored
Probably an error in earlier firmware is never enabled so remove. bPacketToWirelessUsb remove dead if/else and variables. Signed-off-by:
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- 25 Aug, 2013 2 commits
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Larry Finger authored
This driver has some global names that are the same as found in driver r8712. Fix the allyesconfig build errors by changing the names of those routines. Signed-off-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
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Larry Finger authored
Kernel code need not test for KERNELVERSION. Besides being unnecessary for an in-kernel driver, these lines will cause a build failure for any source tree with a stale include/linux/version.h. This patch is only compile tested. Signed-off-by:
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- 24 Aug, 2013 4 commits
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Greg Kroah-Hartman authored
Move to use the DEVICE_ATTR_RW/RO macros, making it easier to audit the sysfs file permissions, and get rid of the "empty" callback for read-only files, saving lines of code. Cc: Stefan Hajnoczi <stefanha@gmail.com> Cc: Laurent Navet <laurent.navet@gmail.com> Cc: Johannes Thumshirn <morbidrsa@googlemail.com> Signed-off-by: -
Greg Kroah-Hartman authored
Use the default DEVICE_ATTR_RO/RW macros to specify the file permissions better, and make them easier to audit. And did we really want any user to be able to write to this file, I kind of doubt it... Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Toshi Kani <toshi.kani@hp.com> Signed-off-by: -
Greg Kroah-Hartman authored
Use the DEVICE_ATTR_RW() macro to be clearer as to the permissions for the sysfs file, making it easier to audit the code. Cc: Al Cho <acho@novell.com> Signed-off-by: -
Greg Kroah-Hartman authored
Use the DEVICE_ATTR_RO/RW macros to better describe the permissions on the file, and make them easier to audit. Cc: David Täht <d@teklibre.com> Cc: Sara Bird <sara.bird.iar@gmail.com> Cc: Masanari Iida <standby24x7@gmail.com> Signed-off-by:
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