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path: root/drivers/media/dvb-frontends/mb86a16.c
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2023-02-08media: dvb-frontends: mb86a16.c: always use the same error pathGravatar Hans Verkuil 1-3/+6
If the message length was wrong, the dprintk() after the 'err' label was bypassed. Fix that, and fix a smatch warning at the same time: mb86a16.c:1514 mb86a16_send_diseqc_msg() warn: missing unwind goto? Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2020-08-29media: dvb-frontends: mb86a16.c: remove useless if/elseGravatar Daniel W. S. Almeida 1-5/+2
Fix the following coccinelle report: drivers/media/dvb-frontends/mb86a16.c:1455:6-8: WARNING: possible condition with no effect (if == else) Both branches are the same, so remove the if/else altogether. Found using - Coccinelle (http://coccinelle.lip6.fr) Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2019-05-24treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61Gravatar Thomas Gleixner 1-13/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-02media: dvb: represent min/max/step/tolerance freqs in HzGravatar Mauro Carvalho Chehab 1-4/+3
Right now, satellite frontend drivers specify frequencies in kHz, while terrestrial/cable ones specify in Hz. That's confusing for developers. However, the main problem is that universal frontends capable of handling both satellite and non-satelite delivery systems are appearing. We end by needing to hack the drivers in order to support such hybrid frontends. So, convert everything to specify frontend frequencies in Hz. Tested-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-03-06media: ABS macro parameter parenthesizationGravatar Dan Gopstein 1-5/+3
Replace usages of the locally defined ABS() macro with calls to the canonical abs() from kernel.h and remove the old definitions of ABS() This change was originally motivated by two local definitions of the ABS (absolute value) macro that fail to parenthesize their parameter properly. This can lead to a bad expansion for low-precedence expression arguments. For example: ABS(1-2) currently expands to ((1-2) < 0 ? (-1-2) : (1-2)) which evaluates to -3. But the correct expansion would be ((1-2) < 0 ? -(1-2) : (1-2)) which evaluates to 1. Signed-off-by: Dan Gopstein <dgopstein@nyu.edu> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-28media: move dvb kAPI headers to include/mediaGravatar Mauro Carvalho Chehab 1-1/+1
Except for DVB, all media kAPI headers are at include/media. Move the headers to it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-11media: mb86a16: avoid division by zeroGravatar Mauro Carvalho Chehab 1-6/+6
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>
2017-12-11media: mb86a16: be more resilient if I2C fails on syncGravatar Mauro Carvalho Chehab 1-0/+1
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>
2017-07-20media: dvb-frontends: mb86a16: remove useless variables in signal_det()Gravatar Gustavo A. R. Silva 1-18/+7
Remove useless variables wait_t and wait_sym and code related. Also, fix some coding style issues. Addresses-Coverity-ID: 1226947 Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-11-18[media] dvb: make DVB frontend *_ops instances "const"Gravatar Max Kellermann 1-1/+1
These are immutable. Making them "const" allows the compiler to move them to the "rodata" section. Note that cxd2841er_t_c_ops cannot be made "const", because cxd2841er_attach() modifies it. Ouch! [mchehab@s-opensource.com: fix merge conflicts] Signed-off-by: Max Kellermann <max.kellermann@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2015-06-09[media] dvb: Get rid of typedev usage for enumsGravatar Mauro Carvalho Chehab 1-3/+4
The DVB API was originally defined using typedefs. This is against Kernel CodingStyle, and there's no good usage here. While we can't remove its usage on userspace, we can avoid its usage in Kernelspace. So, let's do it. This patch was generated by this shell script: for j in $(grep typedef include/uapi/linux/dvb/frontend.h |cut -d' ' -f 3); do for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f); do sed "s,${j}_t,enum $j," <$i >a && mv a $i; done; done While here, make CodingStyle fixes on the affected lines. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> # for drivers/media/firewire/*
2014-09-22[media] dvb: return the error from i2c_transfer if negativeGravatar Hans Wennborg 1-0/+2
Just returns whatever error that was returned by the i2c core, in the case of errors, only returning -EREMOTEIO if the transfer size is not what it was expected. Signed-off-by: Hans Wennborg <hans@hanshq.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-09-22[media] dvb: remove 0x prefix from decimal value in printfGravatar Hans Wennborg 1-1/+1
The returned code is 0, 1 or an error. It doesn't make sense to print it in hexadecimal. Signed-off-by: Hans Wennborg <hans@hanshq.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-09-03[media] mb86a16/mb86a20s: fix sparse warningsGravatar Hans Verkuil 1-1/+1
drivers/media/dvb-frontends/mb86a16.c:31:14: warning: symbol 'verbose' was not declared. Should it be static? drivers/media/dvb-frontends/mb86a20s.c:36:4: warning: symbol 'mb86a20s_subchannel' was not declared. Should it be static? drivers/media/dvb-frontends/mb86a20s.c:1333:24: warning: symbol 'cnr_qpsk_table' was not declared. Should it be static? Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2012-08-13[media] move the dvb/frontends to drivers/media/dvb-frontendsGravatar Mauro Carvalho Chehab 1-0/+1878
Raise the DVB frontends one level up, as the intention is to remove the drivers/media/dvb directory. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>