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2011-07-27Revert "[media] DVB: dvb_frontend: off by one in dtv_property_dump()"Mauro Carvalho Chehab
This reverts commit a3e4adf274f86b2363fedaa964297cb38526cef0. As pointed by Andread Oberritter <obi@linuxtv.org>: That's wrong, because the array size is DTV_MAX_COMMAND + 1. Using the ARRAY_SIZE macro instead might reduce the confusion. Also, changeset 3995223038 already fixed this issue. Reported-by: Andread Oberritter <obi@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] cx88: implemented luma notch filter controlistvan_v@mailbox.hu
The following patch adds a new control that makes it possible to set the luma notch filter type to finetune picture quality. Signed-off-by: Istvan Varga <istvan_v@mailbox.hu> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] cx88: implemented sharpness controlistvan_v@mailbox.hu
This patch implements support for a sharpness control, using the luma peaking filter feature of cx2388x. [mchehab@redhat.com: use cx_andor instead of cx_write] Signed-off-by: Istvan Varga <istvan_v@mailbox.hu> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] v4l: s5p-tv: add TV Mixer driver for Samsung S5P platformTomasz Stanislawski
Add driver for TV Mixer on Samsung platforms from S5P family. Mixer is responsible for merging images from three layers and passing result to the output. Drivers are using: - v4l2 framework - videobuf2 - runtime PM Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] v4l: s5p-tv: add SDO driver for Samsung S5P platformTomasz Stanislawski
Add drivers for Standard Definition output (SDO) on Samsung platforms from S5P family. The driver provides control over streaming analog TV via Composite connector. Driver is using: - v4l2 framework - runtime PM Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] v4l: s5p-tv: add drivers for HDMI on Samsung S5P platformTomasz Stanislawski
Add drivers for HDMI outputs on Samsung platforms from S5P family. Drivers are using: - v4l2 framework - runtime PM Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] cx88: properly maintain decoder config when using MPEG encoderDevin Heitmueller
The cx88 driver would force core->input to always be zero when doing the the request_acquire(). While it wasn't actually changing the input register in the hardware, the driver makes decision based on the current input. In particular, it decides whether to do things like enabling the comb filter when on a composite input but disabling it on s-video. So for example, on the HVR-1300, using the s-video input with the MPEG encoder would end up with the video decoder core configured as though the input type were composite. In short, the driver state did not match the hardware state. This patch does two things: 1. It forces the input to zero only if actually switching to DVB mode. This prevents the input from changing when the blackbird driver opens the device. 2. Keep track of what the input was set to when switching to DVB, and reset it back when done. This eliminates a condition where for example the user had the analog side of the board set to capture on the s-video input, then he used DVB for a bit, then the analog input would unexpectedly be set to the tuner input. This work was sponsored by Anevia S.A. Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com> Cc: Florent Audebert <florent.audebert@anevia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] MFC: Add MFC 5.1 V4L2 driverKamil Debski
Multi Format Codec 5.1 is a hardware video coding acceleration module found in the S5PV210 and Exynos4 Samsung SoCs. It is capable of handling a range of video codecs and this driver provides a V4L2 interface for video decoding and encoding. Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Jeongtae Park <jtp.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] redrat3: improve compat with lirc userspace decodeJarod Wilson
This is admittedly a bit of a hack, but if we change our timeout value to something longer and fudge our synthesized trailing space sample based on the initial pulse sample, rc-core decode continues to work just fine with both rc-6 and rc-5, and now lirc userspace decode shows proper repeats for both of those protocols as well. Also tested NEC successfully with both decode options. We do still need a reset timer callback using the hardware's timeout value to make sure we actually process samples correctly, regardless of our somewhat hacky timeout and synthesized trailer above. This also adds a missing del_timer_sync call to the module unload path. CC: Chris Dodge <chris@redrat.co.uk> CC: Andrew Vincer <andrew.vincer@redrat.co.uk> CC: Stephen Cox <scox_nz@yahoo.com> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] redrat3: cap duration in the right placeJarod Wilson
Trying to cap duration before multiplying it was obviously wrong. CC: Chris Dodge <chris@redrat.co.uk> CC: Andrew Vincer <andrew.vincer@redrat.co.uk> CC: Stephen Cox <scox_nz@yahoo.com> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] redrat3: sending extra trailing space was uselessJarod Wilson
We already add a trailing space, this wasn't doing anything useful, and actually confused lirc userspace a bit. Rip it out. CC: Chris Dodge <chris@redrat.co.uk> CC: Andrew Vincer <andrew.vincer@redrat.co.uk> CC: Stephen Cox <scox_nz@yahoo.com> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] rc-core support for Microsoft IR keyboard/mouseJarod Wilson
This is a custom IR protocol decoder, for the RC-6-ish protocol used by the Microsoft Remote Keyboard, apparently developed internally at Microsoft, and officially dubbed MCIR-2, per their March 2011 remote and transceiver requirements and specifications document, which also touches on this IR keyboard/mouse device. Its a standard keyboard with embedded thumb stick mouse pointer and mouse buttons, along with a number of media keys. The media keys are standard RC-6, identical to the signals from the stock MCE remotes, and will be handled as such. The keyboard and mouse signals will be decoded and delivered to the system by an input device registered specifically by this driver. Successfully tested with multiple mceusb-driven transceivers, as well as with fintek-cir and redrat3 hardware. Essentially, any raw IR hardware with enough sampling resolution should be able to use this decoder, nothing about it is at all receiver-hardware-specific. This work is inspired by lirc_mod_mce: The documentation there and code aided in understanding and decoding the protocol, but the bulk of the code is actually borrowed more from the existing in-kernel decoders than anything. I did recycle the keyboard keycode table, a few defines, and some of the keyboard and mouse data parsing bits from lirc_mod_mce though. Special thanks to James Meyer for providing the hardware, and being patient with me as I took forever to get around to writing this. callback routine to ensure we don't get any stuck keys, and used symbolic names for the keytable. Also cc'ing Florian this time, who I believe is the original mod-mce author... CC: Florian Demski <fdemski@users.sourceforge.net> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] af9015: add support for Sveon STV22 [1b80:e401]Emilio David Diaus Lopez
Signed-off-by: Emilio David Diaus Lopez <reality_es@yahoo.es> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] af9015: remove 2nd I2C-adapterAntti Palosaari
It is useless. There is only one physical I2C-adapter. 2nd adapter was added originally due to some plans for allowing only one demod to access bus at time. But I never implemented proper locking... Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] af9015: remove old FW based IR polling codeAntti Palosaari
Remove old code which is not used anymore since IR code is read directly from memory nowadays. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] af9015: add more I2C msg checksAntti Palosaari
Return EOPNOTSUPP for too long messages. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] af9015: small optimizationAntti Palosaari
Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] af9015: map remote for MSI DIGIVOX DuoAntti Palosaari
Reported-by: Jacek M. Holeczek <jacek.m.holeczek@gmail.com> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] af9015: setup rc keytable for LC-Power LC-USB-DVBTJuergen Lock
That's this tuner: The credit card sized remote more or less works if I set remote=4, so I added the hash to get it autodetected. (`more or less' there meaning sometimes buttons are `stuck on repeat', i.e. ir-keytable -t keeps repeating the same scancode until i press another button.) Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] media, Micronas dvb-t: Fix mem leaks, don't needlessly zero mem, fix ↵Jesper Juhl
spelling In drivers/media/dvb/frontends/drxd_hard.c::load_firmware() I see 3 small issues: 1) When the 'fw' variable goes out of scope we'll leak the memory allocated to it by request_firmware() by neglecting to call release_firmware(). 2) After a successful request_firmware() we allocate fw->size bytes of memory using kzalloc() only to immediately overwrite all that memory with memcpy(), so asking for zeroed memory seems like wasted effort - just use kmalloc(). 3) In one of the error messages "no memory" lacks a space and is written as "nomemory". This patch fixes all 3 issues. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] rc-rc6-mce: minor keymap updatesJarod Wilson
Microsoft's Windows Media Center specification and requirements doc from 2011.03.18 now refers to the former Power Toggle button as the Sleep Toggle, and recommends using a new moon sleep icon for it. Its the same key, but its apparently always been meant to put the system to sleep, not power it off. Adjust accordingly. While we're here, lets also remove the duplicate KEY_PLAYPAUSE entry. Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drivers/media/video/cx231xx/cx231xx-cards.c: add missing kfreeJulia Lawall
Clear the cx231xx_devused variable and free dev in the error handling code, as done in the error handling code nearby. The semantic match that finds this problem is as follows: // <smpl> @r@ identifier x; @@ kfree(x) @@ identifier r.x; expression E1!=0,E2,E3,E4; statement S; @@ ( if (<+...x...+>) S | if (...) { ... when != kfree(x) when != if (...) { ... kfree(x); ... } when != x = E3 * return E1; } ... when != x = E2 if (...) { ... when != x = E4 kfree(x); ... return ...; } ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drivers/media/video: add missing kfreeJulia Lawall
Free the recently allocated qcam in each case. The semantic match that finds this problem is as follows: // <smpl> @r@ identifier x; @@ kfree(x) @@ identifier r.x; expression E1!=0,E2,E3,E4; statement S; @@ ( if (<+...x...+>) S | if (...) { ... when != kfree(x) when != if (...) { ... kfree(x); ... } when != x = E3 * return E1; } ... when != x = E2 if (...) { ... when != x = E4 kfree(x); ... return ...; } ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] TM6000: alsa: Clean up kernel coding style errorsAdam M. Dutko
There were several coding style errors as reported by checkpatch.pl. This patch should fix those errors with the single exception of the open square bracket issue on line 45. [mchehab@redhat.com: Fix a merge conflict] Signed-off-by: Adam M. Dutko <dutko.adam@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] tm6000: remove a check for NO_PCM_LOCKMauro Carvalho Chehab
This was likely used by some test. There's no sense on keeping it upstream. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] DVB: dvb_frontend: off by one in dtv_property_dump()Dan Carpenter
If the tvp->cmd == DTV_MAX_COMMAND then we read past the end of the array. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] cx23885: added support for card 107d:6f39istvan_v@mailbox.hu
This patch, based on code by Mirek Slugen, implements support for the Leadtek WinFast PxDVR3200 H card with XC4000 tuner (107d:6f39). Signed-off-by: Istvan Varga <istvan_v@mailbox.hu> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drivers/media: static should be at beginning of declarationJesper Juhl
Make sure that the 'static' keywork is at the beginning of declaration for drivers/media/video/omap/omap_vout.c This gets rid of warnings like when building with -Wold-style-declaration (and/or -Wextra which also enables it). Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] marvell-cam: clean up a couple of unused cam structure fieldsJonathan Corbet
Delete a couple of leftover fields whose time has passed. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] marvell-cam: Allow selection of supported buffer modesJonathan Corbet
The Marvell camera core can support all three videobuf2 buffer modes, which is slick, but it also requires that all three modes be built and present, even though only one is likely to be used. This patch allows the supported modes to be selected at configuration time, reducing the footprint of the driver. Prior to this patch, the MMP camera driver looked like this: mmp_camera 19092 0 videobuf2_core 15542 1 mmp_camera videobuf2_dma_sg 3173 1 mmp_camera videobuf2_dma_contig 2188 1 mmp_camera videobuf2_vmalloc 1718 1 mmp_camera videobuf2_memops 2100 3 videobuf2_dma_sg,videobuf2_dma_contig,videobuf2_vmalloc Afterward, instead, with scatter/gather only configured: mmp_camera 16021 0 videobuf2_core 15542 1 mmp_camera videobuf2_dma_sg 3173 1 mmp_camera videobuf2_memops 2100 1 videobuf2_dma_sg The total goes from 43,813 bytes to 36,836. The emphasis has been on simplicity and minimal #ifdef use rather than on squeezing out every possible byte of code. For configuration, the driver simply looks at which videobuf2 modes have been configured in and supports them all; it's simplistic but should be good enough. The cafe driver is set to support vmalloc and dma-contig; mmp supports only dma-sg, since that's the only mode that really makes sense to use. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] marvell-cam: power down mmp camera on registration failureJonathan Corbet
If registration does not work, we don't want to leave the sensor powered on. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] marvell-cam: remove {min,max}_buffers parametersJonathan Corbet
Somewhere along the way the code stopped actually paying any attention to them, and I doubt anybody has ever made use of them. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] marvell-cam: core code reorganizationJonathan Corbet
This code shows signs of having been mucked with over the last five years or so; things were kind of mixed up. This patch reorders functions into a more rational organization which, with luck, will facilitate making the buffer modes selectable at configuration time. Code movement only: no functional changes here. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] marvell-cam: delete struct mcam_sio_bufferJonathan Corbet
This structure got passed over in the videobuf2 conversion; it has no reason to exist now. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] tea5764: Fix module parameter permissionsJean Delvare
The third parameter of module_param is supposed to represent sysfs file permissions. A value of "1" leads to the following: $ ls -l /sys/module/radio_tea5764/parameters/ total 0 I am changing it to "0" to align with the other module parameters in this driver. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Fabio Belavenuto <belavenuto@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] Make Compro VideoMate Vista T750F actually workCarlos Corbacho
Based on the work of John Newbigin, Davor Emard and others who contributed on the mailing lists. The previous 'support' for this card was a partial merge of John's changes that, as far as I can tell, never actually got the thing working (no DVB-T, analog tuner not initialised). Initialise the analog tuner properly and hook up the DVB tuner and demodulator. DVB-T and analog now work (though I can't tune every DVB channel, but I think there's an issue with the aerial and signal boosters here that is causing me problems). Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27tda18271c2dd: Fix compilation when module is not selectedMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] tda18271c2dd.h: Don't add the same symbol twiceMauro Carvalho Chehab
Should be folded with the next patch when sending upstream Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] dvb: don't cause missing symbols for drxk/tda18271c2ddMauro Carvalho Chehab
If those demods are unselected, but a bridge driver requires them, produce a runtime message, instead of missing symbols. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: remove a now unused variableMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] em28xx: Change firmware name for Terratec H5 DRX-KMauro Carvalho Chehab
Use a name convention for the firmware file that matches on the current firmware namespacing. Also, add it to the firmware download script. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: Add a fallback method for QAM parameter settingMauro Carvalho Chehab
The QAM standard is set using this scu_command: SCU_RAM_COMMAND_STANDARD_QAM | SCU_RAM_COMMAND_CMD_DEMOD_SET_PARAM The driver implements a version that has 4 parameters, however, Terratec H5 needs to break this into two separate commands, otherwise, DVB-C doesn't work. With this fix, scan is now properly working and getting the channel list: >>> tune to: 609000000:INVERSION_AUTO:5217000:FEC_3_4:QAM_256 >>> tuning status == 0x00 >>> tuning status == 0x07 >>> tuning status == 0x1f 0x0093 0x0026: pmt_pid 0x0758 (null) -- SporTV2 (running, scrambled) 0x0093 0x0027: pmt_pid 0x0748 (null) -- SporTV (running, scrambled) 0x0093 0x0036: pmt_pid 0x0768 (null) -- FX (running, scrambled) 0x0093 0x0052: pmt_pid 0x0788 (null) -- The History Channel (running, scrambled) Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: Improve the scu_command error messageMauro Carvalho Chehab
Now, it outputs: [10927.639641] drxk: SCU_RESULT_INVPAR while sending cmd 0x0203 with params: [10927.646283] drxk: 02 00 00 00 10 00 07 00 03 02 .......... Better than ERROR -3. This happens with Terratec H5 firmware. It adds 2 new error conditions, and something useful to track what the heck is that. I suspect that the scu_command is dependent on the firmware revision. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: Simplify the DVB-C set mode logicMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: Fix driver removalMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: Improves the UIO handlingMauro Carvalho Chehab
The driver is too limited: it assumes that UIO is used only for controlling the antenna, and that only UIO-1 is in usage. However, from Terratec H7 driver [1], 3 UIO's can be used. In fact, it seems that H7 needs to use all 3. So, make the code generic enough to handle the most complex scenario. For now, only antena GPIO can be specified, but is is easier now to add the other GPIO/UIO needs. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: Print detected configurationMauro Carvalho Chehab
DRX-K configuration is interesting when writing/testing new devices. Add an info line showing the discovered info. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: Fix the antenna switch logicMauro Carvalho Chehab
Terratec H5 doesn't require to switch mode, but generates an error due to this logic. Also, GPIO's are board-dependent. So, add it at the board config struct. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: change mode before calling the set mode routinesMauro Carvalho Chehab
The set mode routines assume that state were changed to the new mode, otherwise, they'll fail. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] drxk: Proper handle/propagate the error codesMauro Carvalho Chehab
This driver is very big and complex. An error happening in the middle of any initialization may cause the frontend to not work. So, it needs to properly propagate error codes internally and to userspace. Also, printing the error codes at the places it happened helps to discover were's a bug at the code. Before this change, a do { } while (0) loop and lots of breaks inside were used to propagate errors. While this works, if there are loops inside other loops, it could be easy to forget to add another break, causing the error to not abort the function. Also, as not all functions were reporting errors, it is hard to discover why something failed. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>