Convert register numbers to macros.

Correctness verified by comparing the disassembly before and after.
Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Fix almost all of checkpatch --strict warnings.

The remaining warnings are about:
* macro REG16 (should be enclosed in parentheses)
* macro REG16 (Macro argument reuse)
Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Removed module parameter debug and the conditions based on it.
Now it can be configured via dynamic debug.
Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Remove redundant repeated module name from messages.

Before:
  si2165 8-0064: si2165: fw load finished

After:
  si2165 8-0064: fw load finished
Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

As syzkaller detected, pvrusb2 driver submits bulk urb withount checking
the the endpoint type is actually blunk. Add a check.

usb 1-1: BOGUS urb xfer, pipe 3 != type 1
------------[ cut here ]------------
WARNING: CPU: 1 PID: 2713 at drivers/usb/core/urb.c:449 usb_submit_urb+0xf8a/0x11d0
Modules linked in:
CPU: 1 PID: 2713 Comm: pvrusb2-context Not tainted
4.14.0-rc1-42251-gebb2c243 #210
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff88006b7a18c0 task.stack: ffff880069978000
RIP: 0010:usb_submit_urb+0xf8a/0x11d0 drivers/usb/core/urb.c:448
RSP: 0018:ffff88006997f990 EFLAGS: 00010286
RAX: 0000000000000029 RBX: ffff880063661900 RCX: 0000000000000000
RDX: 0000000000000029 RSI: ffffffff86876d60 RDI: ffffed000d32ff24
RBP: ffff88006997fa90 R08: 1ffff1000d32fdca R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1000d32ff39
R13: 0000000000000001 R14: 0000000000000003 R15: ffff880068bbed68
FS:  0000000000000000(0000) GS:ffff88006c600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001032000 CR3: 000000006a0ff000 CR4: 00000000000006f0
Call Trace:
 pvr2_send_request_ex+0xa57/0x1d80 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:3645
 pvr2_hdw_check_firmware drivers/media/usb/pvrusb2/pvrusb2-hdw.c:1812
 pvr2_hdw_setup_low drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2107
 pvr2_hdw_setup drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2250
 pvr2_hdw_initialize+0x548/0x3c10 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2327
 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:118
 pvr2_context_thread_func+0x361/0x8c0 drivers/media/usb/pvrusb2/pvrusb2-context.c:167
 kthread+0x3a1/0x470 kernel/kthread.c:231
 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431
Code: 48 8b 85 30 ff ff ff 48 8d b8 98 00 00 00 e8 ee 82 89 fe 45 89
e8 44 89 f1 4c 89 fa 48 89 c6 48 c7 c7 40 c0 ea 86 e8 30 1b dc fc <0f>
ff e9 9b f7 ff ff e8 aa 95 25 fd e9 80 f7 ff ff e8 50 74 f3
---[ end trace 6919030503719da6 ]---
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The logic at V4L2 led core assumes that the flash struct
can be null. However, it doesn't check for null while
trying to set, causing some smatch  to warn:

	drivers/media/v4l2-core/v4l2-flash-led-class.c:210 v4l2_flash_s_ctrl() error: we previously assumed 'fled_cdev' could be null (see line 200)
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

As smatch warned:
	drivers/media/dvb-core/dvb_frontend.c:2468 dvb_frontend_handle_ioctl() error: uninitialized symbol 'err'.

The ioctl handler actually got a regression here: before changeset
d73dcf0c ("media: dvb_frontend: cleanup ioctl handling logic"),
the code used to return -EOPNOTSUPP if an ioctl handler was not
implemented on a driver. After the change, it may return a random
value.

Fixes: d73dcf0c ("media: dvb_frontend: cleanup ioctl handling logic")

Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Tested-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

As warned by smatch, there are several places where the I2C
transfer may fail, leading into inconsistent behavior:

	drivers/media/tuners/xc5000.c:689 xc_debug_dump() error: uninitialized symbol 'regval'.
	drivers/media/tuners/xc5000.c:841 xc5000_is_firmware_loaded() error: uninitialized symbol 'id'.
	drivers/media/tuners/xc5000.c:939 xc5000_set_tv_freq() error: uninitialized symbol 'pll_lock_status'.
	drivers/media/tuners/xc5000.c:1195 xc_load_fw_and_init_tuner() error: uninitialized symbol 'pll_lock_status'.

Handle the return codes from the I2C transfer, in order to
address those issues.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

As reported by smatch:
	drivers/media/usb/dvb-usb-v2/mxl111sf-demod.c:485 mxl111sf_demod_read_signal_strength() error: uninitialized symbol 'modulation'.

The mxl111sf_demod_read_signal_strength() just ignores if something
gets wrong while reading snr or modulation.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

As warned by smatch:
	drivers/media/dvb-frontends/drxd_hard.c:989 HI_Command() error: uninitialized symbol 'waitCmd'.
	drivers/media/dvb-frontends/drxd_hard.c:1306 SC_WaitForReady() error: uninitialized symbol 'curCmd'.
	drivers/media/dvb-frontends/drxd_hard.c:1322 SC_SendCommand() error: uninitialized symbol 'errCode'.
	drivers/media/dvb-frontends/drxd_hard.c:1339 SC_ProcStartCommand() error: uninitialized symbol 'scExec'.

The error handling on several places are somewhat flawed, as
they don't check if Read16() returns an error.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The loop with read status use a dynamic timeout value, calculated
from symbol rate. It should run the loop at least one time for
the status to be handled after the loop.

While this should, in practice, happen every time, it doesn't
hurt to change the logic to make it explicit.

This solves a smatch warning:
	drivers/media/dvb-frontends/cxd2841er.c:3350 cxd2841er_set_frontend_s() error: uninitialized symbol 'status'.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

As warned by smatch:
	drivers/media/pci/cx25821/cx25821-alsa.c:155 cx25821_alsa_dma_init() warn: argument 3 to %08lx specifier is cast from pointer

Use the standard %p to print a pointer.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Smatch gives two bogus warnings on this driver:
	drivers/media/usb/dvb-usb-v2/dvbsky.c:336 dvbsky_s960_attach() error: uninitialized symbol 'i2c_adapter'.
	drivers/media/usb/dvb-usb-v2/dvbsky.c:459 dvbsky_s960c_attach() error: uninitialized symbol 'i2c_adapter'.

Shut them up.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

If the tuner doesn't have get_frequency() callback, the current
code will place a random value as the frequency offset. That
doesn't seem right! The better is to just assume that, on such
case, the tuner was able to set the exact frequency that was
requested.

Fixes a smatch warning:
	drivers/media/dvb-frontends/m88rs2000.c:639 m88rs2000_set_frontend() error: uninitialized symbol 'tuner_freq'.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

pt1_nr_tables is a modprobe parameter. The way the logic
handles it, it can't be negative. However, user can
set it to zero.

If set to zero, however, it will cause troubles at
pt1_init_tables(), as reported by smatch:
	drivers/media/pci/pt1/pt1.c:468 pt1_init_tables() error: uninitialized symbol 'first_pfn'.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The smatch logic gets confused with the syntax used to check if the
ov9650x_read() reads succedded:
	drivers/media/i2c/ov9650.c:895 __g_volatile_ctrl() error: uninitialized symbol 'reg2'.
	drivers/media/i2c/ov9650.c:895 __g_volatile_ctrl() error: uninitialized symbol 'reg1'.

There's nothing wrong with the original logic, except that
it is a little more harder to review.

So, let's stick with the syntax that won't cause read
issues.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Reviewed-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

As warned by smatch:
	drivers/media/dvb-frontends/mb86a16.c:1690 mb86a16_read_ber() error: uninitialized symbol 'timer'.
	drivers/media/dvb-frontends/mb86a16.c:1706 mb86a16_read_ber() error: uninitialized symbol 'timer'.

There is a potential risk of doing a division by zero if
timer is not handled well. Enforce it by setting a bit mask
for the values used to select the timer.

It should be noticed that I don't have mb86a16 datasheet. So,
the bitmask was guessed based on the existing checks for
the field. At worse case scenario, it will just show a
badly calculated bit error rate, but it won't crash.

While here, optimize the logic to prevent uneeded tests.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

If the I2C read fails while check for sync, there's no point
on doing adjusting the tuner due to a random value that might
be at VIRM var. So, set VIRM to zero, as that makes the caller
for check_sync() to return an error.

Fix those smatch warnings:
	drivers/media/dvb-frontends/mb86a16.c:1460 mb86a16_set_fe() error: uninitialized symbol 'VIRM'.
	drivers/media/dvb-frontends/mb86a16.c:1461 mb86a16_set_fe() error: uninitialized symbol 'VIRM'.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

as reported by smatch:
	drivers/media/dvb-frontends/drx39xyj/drxj.c:2157 drxj_dap_atomic_read_write_block() error: uninitialized symbol 'word'.

The driver doesn't check if a read error occurred. Add such
check.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

As smatch reported:
	drivers/media/i2c/imx274.c:659 imx274_regmap_util_write_table_8() error: uninitialized symbol 'err'.

There is a bug at imx274_regmap_util_write_table_8() with causes
it to randomly return a random error if range_count is zero.

Worse than that, the logic there starts with range_count
equal to zero, and periodically resets it to zero again.

As it is a way more likely that err assumes a non-zero value,
I suspect that the chance of this code to run is very small,
so, it would be worth to review the entire function.

Anyway, clearly it shouldn't be returning error if range_count
is zero. So, let's fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The current code doesn't report tuner lock properly if the
tuner get_status callback is not available, as reported by
smatch:
	drivers/media/dvb-frontends/stv090x.c:2220 stv090x_get_coldlock() error: uninitialized symbol 'reg'.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

If, for some reason, reading the hwmodel register on
xc4000 fails, it will cause the following logig to
use a random value, as reported by smatch:

	drivers/media/tuners/xc4000.c:1047 check_firmware() error: uninitialized symbol 'hwmodel'.
	drivers/media/tuners/xc4000.c:1060 check_firmware() error: uninitialized symbol 'hwmodel'.
	drivers/media/tuners/xc4000.c:1064 check_firmware() error: uninitialized symbol 'hwmodel'.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The logic at si476x_radio_s_hw_freq_seek() checks if the
frequency range that will be used to handle hardware seek
has the minimal frequency under rangelow. That works fine
if userspace zeros both fields. However, if userspace
fills either seek->rangelow or seek-rangehigh, it won't
read the corresponding range from the device, causing the
values to be unitialized, as warned by smatch:

	drivers/media/radio/radio-si476x.c:789 si476x_radio_s_hw_freq_seek() error: uninitialized symbol 'rangelow'.
	drivers/media/radio/radio-si476x.c:789 si476x_radio_s_hw_freq_seek() error: uninitialized symbol 'rangehigh'.

Fix it by initializing those vars from the values present at
the struct v4l2_hw_freq_seek.

While here, simplify the logic which reads such values from
the hardware limits.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The logic at qt1010_init_meas1() and qt1010_init_meas2()
are too complex for static analizers to identify that
some vars are always be initialized.

That causes smatch to produce the following warnings:
	drivers/media/tuners/qt1010.c:248 qt1010_init_meas1() error: uninitialized symbol 'val2'.
	drivers/media/tuners/qt1010.c:282 qt1010_init_meas2() error: uninitialized symbol 'val'.

So, add annotations to prevent those bogus warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The tuning logic at tda8290 relies on agc_stat and
adc_sat to be initialized. However, as warned by smatch:

	drivers/media/tuners/tda8290.c:261 tda8290_set_params() error: uninitialized symbol 'agc_stat'.
	drivers/media/tuners/tda8290.c:261 tda8290_set_params() error: uninitialized symbol 'adc_sat'.
	drivers/media/tuners/tda8290.c:262 tda8290_set_params() error: uninitialized symbol 'adc_sat'.

That could cause an erratic behavior if PLL is not locked,
as the code will only work if
	!(pll_stat & 0x80) && (adc_sat < 20)

So, initialize it to zero, in order to let the code below
to be called, with should give more chances to adjust the
tuner gain, in order to get a PLL lock.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

As warned by smatch:
drivers/media/platform/atmel/atmel-isc.c:2097 isc_parse_dt() error: uninitialized symbol 'ret'.

The problem here is that of_graph_get_next_endpoint() can
potentially return NULL on its first pass, with would make
it return a random value, as ret is not initialized.

While here, use while(1) instead of for(; ;), as while is
the preferred syntax for such kind of loops.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Fix bug by moving the i2c_unregister_device calls after deregistration
of dvb frontend.

The new style i2c drivers already destroys the frontend object at
i2c_unregister_device time.
When the dvb frontend is unregistered afterwards it leads to this oops:

  [ 6058.866459] BUG: unable to handle kernel NULL pointer dereference at 00000000000001f8
  [ 6058.866578] IP: dvb_frontend_stop+0x30/0xd0 [dvb_core]
  [ 6058.866644] PGD 0
  [ 6058.866646] P4D 0

  [ 6058.866726] Oops: 0000 [#1] SMP
  [ 6058.866768] Modules linked in: rc_pinnacle_pctv_hd(O) em28xx_rc(O) si2157(O) si2168(O) em28xx_dvb(O) em28xx(O) si2165(O) a8293(O) tda10071(O) tea5767(O) tuner(O) cx23885(O) tda18271(O) videobuf2_dvb(O) videobuf2_dma_sg(O) m88ds3103(O) tveeprom(O) cx2341x(O) v4l2_common(O) dvb_core(O) rc_core(O) videobuf2_memops(O) videobuf2_v4l2(O) videobuf2_core(O) videodev(O) media(O) bluetooth ecdh_generic ums_realtek uas rtl8192cu rtl_usb rtl8192c_common rtlwifi usb_storage snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic i2c_mux snd_hda_intel snd_hda_codec snd_hwdep x86_pkg_temp_thermal snd_hda_core kvm_intel kvm irqbypass [last unloaded: videobuf2_memops]
  [ 6058.867497] CPU: 2 PID: 7349 Comm: kworker/2:0 Tainted: G        W  O    4.13.9-gentoo #1
  [ 6058.867595] Hardware name: MEDION E2050 2391/H81H3-EM2, BIOS H81EM2W08.308 08/25/2014
  [ 6058.867692] Workqueue: usb_hub_wq hub_event
  [ 6058.867746] task: ffff88011a15e040 task.stack: ffffc90003074000
  [ 6058.867825] RIP: 0010:dvb_frontend_stop+0x30/0xd0 [dvb_core]
  [ 6058.867896] RSP: 0018:ffffc90003077b58 EFLAGS: 00010293
  [ 6058.867964] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000010040001f
  [ 6058.868056] RDX: ffff88011a15e040 RSI: ffffea000464e400 RDI: ffff88001cbe3028
  [ 6058.868150] RBP: ffffc90003077b68 R08: ffff880119390380 R09: 000000010040001f
  [ 6058.868241] R10: ffffc90003077b18 R11: 000000000001e200 R12: ffff88001cbe3028
  [ 6058.868330] R13: ffff88001cbe68d0 R14: ffff8800cf734000 R15: ffff8800cf734098
  [ 6058.868419] FS:  0000000000000000(0000) GS:ffff88011fb00000(0000) knlGS:0000000000000000
  [ 6058.868511] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [ 6058.868578] CR2: 00000000000001f8 CR3: 00000001113c5000 CR4: 00000000001406e0
  [ 6058.868662] Call Trace:
  [ 6058.868705]  dvb_unregister_frontend+0x2a/0x80 [dvb_core]
  [ 6058.868774]  em28xx_dvb_fini+0x132/0x220 [em28xx_dvb]
  [ 6058.868840]  em28xx_close_extension+0x34/0x90 [em28xx]
  [ 6058.868902]  em28xx_usb_disconnect+0x4e/0x70 [em28xx]
  [ 6058.868968]  usb_unbind_interface+0x6d/0x260
  [ 6058.869025]  device_release_driver_internal+0x150/0x210
  [ 6058.869094]  device_release_driver+0xd/0x10
  [ 6058.869150]  bus_remove_device+0xe4/0x160
  [ 6058.869204]  device_del+0x1ce/0x2f0
  [ 6058.869253]  usb_disable_device+0x99/0x270
  [ 6058.869306]  usb_disconnect+0x8d/0x260
  [ 6058.869359]  hub_event+0x93d/0x1520
  [ 6058.869408]  ? dequeue_task_fair+0xae5/0xd20
  [ 6058.869467]  process_one_work+0x1d9/0x3e0
  [ 6058.869522]  worker_thread+0x43/0x3e0
  [ 6058.869576]  kthread+0x104/0x140
  [ 6058.869602]  ? trace_event_raw_event_workqueue_work+0x80/0x80
  [ 6058.869640]  ? kthread_create_on_node+0x40/0x40
  [ 6058.869673]  ret_from_fork+0x22/0x30
  [ 6058.869698] Code: 54 49 89 fc 53 48 8b 9f 18 03 00 00 0f 1f 44 00 00 41 83 bc 24 04 05 00 00 02 74 0c 41 c7 84 24 04 05 00 00 01 00 00 00 0f ae f0 <48> 8b bb f8 01 00 00 48 85 ff 74 5c e8 df 40 f0 e0 48 8b 93 f8
  [ 6058.869850] RIP: dvb_frontend_stop+0x30/0xd0 [dvb_core] RSP: ffffc90003077b58
  [ 6058.869894] CR2: 00000000000001f8
  [ 6058.875880] ---[ end trace 717eecf7193b3fc6 ]---
Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Bitmask for the MIPI CSI-2 data PHY status doesn't seem to be correct.
Fix it.
Signed-off-by: Krzysztof Ha?asa <khalasa@piap.pl>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/pci/ddbridge/ddbridge-ci.c:321:5: warning: no previous prototype for 'ddb_ci_attach' [-Wmissing-prototypes]
 int ddb_ci_attach(struct ddb_port *port, u32 bitrate)
     ^~~~~~~~~~~~~
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Update the driver version number/string to 0.9.32-integrated.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Add missing state->modcod update from upstream driver which needs to be
done when manage_matype_info() sets is_vcm on certain S2 transponders.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Add a ddb_ prefix to the two functions to better avoid conflicts in the
global namespace, ie. when building everything into the kernel image.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Rename the MaxS4/8 support files following upstream. References to these
files and descriptions have been updated aswell.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

slot_ts_enable_xo2() logged debug output to info instead of debug, so
fix this up.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Move all CI device support related code from ddbridge-core to ddbridge-ci,
following the previously split off MaxS4/8 support.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Fixes several alignment, braces, space-before-cast, camelcase et al issues
reported by checkpatch --strict, plus a few more checkpatch didn't report.

Three checks are left after this though:
- one CamelCase in ddbridge-core, related to defines/vars/enums referenced
  from the stv090x demod driver
- one macro argument reuse in ddbridge-core aswell
- one unbalanced braces around else in ddbridge-main, which is due to
  #ifdefs related to CONFIG_PCI_MSI, which preferrably should be kept
  as-is for readability.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

These are only used in C/T demod attach functions, don't add any real
benefit (ie. line length savings) and in case of cxd28xx_attach aren't
even used consequently. Remove them.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The tuning logic is broken with regards to status report:
it relies on a previously-cached value that may not be valid
if re-tuned.

Change the logic to always read the status.
Acked-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Fix typo s/:/;/

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Hyun Kwon <hyun.kwon@xilinx.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

If set_fmt callback is called with format->width or format->height set to
zero and HACTIVE_CNT or VACTIVE_CNT bits (respectively) in chip are zero
we will divide by zero later in this callback when we try to calculate
HSC or VSC values.

Fix this by explicitly rejecting these values.
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>