kernel/drivers/media/dvb-frontends/itd1000.c, branch linux-6.9.y

media: dvb: symbol fixup for dvb_attach()

2023-09-09T07:15:11Z

In commit 9011e49d54dc ("modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules") the use of symbol_get is properly restricted to GPL-only marked symbols. This interacts oddly with the DVB logic which only uses dvb_attach() to load the dvb driver which then uses symbol_get(). Fix this up by properly marking all of the dvb_attach attach symbols as EXPORT_SYMBOL_GPL(). Fixes: 9011e49d54dc ("modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules") Cc: stable Reported-by: Stefan Lippers-Hollmann Cc: Mauro Carvalho Chehab Cc: Christoph Hellwig Cc: linux-media@vger.kernel.org Cc: linux-modules@vger.kernel.org Acked-by: Luis Chamberlain Acked-by: Hans Verkuil Link: https://lore.kernel.org/r/20230908092035.3815268-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30T18:26:37Z

Based on 3 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 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] 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 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman

media: dvb: convert tuner_info frequencies to Hz

2018-08-02T20:14:50Z

Right now, satellite tuner drivers specify frequencies in kHz, while terrestrial/cable ones specify in Hz. That's confusing for developers. However, the main problem is that universal tuners 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 tuners. So, convert everything to specify tuner frequencies in Hz. Plese notice that a similar patch is also needed for frontends. Tested-by: Katsuhiro Suzuki Acked-by: Michael Büsch Signed-off-by: Mauro Carvalho Chehab

media: move dvb kAPI headers to include/media

2017-12-28T18:16:01Z

Except for DVB, all media kAPI headers are at include/media. Move the headers to it. Signed-off-by: Mauro Carvalho Chehab

media: dvb-frontends: fix i2c access helpers for KASAN

2017-12-15T16:53:50Z

A typical code fragment was copied across many dvb-frontend drivers and causes large stack frames when built with with CONFIG_KASAN on gcc-5/6/7: drivers/media/dvb-frontends/cxd2841er.c:3225:1: error: the frame size of 3992 bytes is larger than 3072 bytes [-Werror=frame-larger-than=] drivers/media/dvb-frontends/cxd2841er.c:3404:1: error: the frame size of 3136 bytes is larger than 3072 bytes [-Werror=frame-larger-than=] drivers/media/dvb-frontends/stv0367.c:3143:1: error: the frame size of 4016 bytes is larger than 3072 bytes [-Werror=frame-larger-than=] drivers/media/dvb-frontends/stv090x.c:3430:1: error: the frame size of 5312 bytes is larger than 3072 bytes [-Werror=frame-larger-than=] drivers/media/dvb-frontends/stv090x.c:4248:1: error: the frame size of 4872 bytes is larger than 3072 bytes [-Werror=frame-larger-than=] gcc-8 now solves this by consolidating the stack slots for the argument variables, but on older compilers we can get the same behavior by taking the pointer of a local variable rather than the inline function argument. Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 Cc: stable@vger.kernel.org Signed-off-by: Arnd Bergmann Signed-off-by: Mauro Carvalho Chehab

[media] media: Drop FSF's postal address from the source code files

2017-01-27T13:38:09Z

Drop the FSF's postal address from the source code files that typically contain mostly the license text. Of the 628 removed instances, 578 are outdated. The patch has been created with the following command without manual edits: git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \ drivers/media/ include/media|while read i; do i=$i perl -e ' open(F,"< $ENV{i}"); $a=join("", ); $a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m && $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m; close(F); open(F, "> $ENV{i}"); print F $a; close(F);'; done Signed-off-by: Sakari Ailus

Revert "[media] dvb_frontend: merge duplicate dvb_tuner_ops.release implementations"

2016-11-18T22:44:33Z

While this patch sounded a good idea, unfortunately, it causes bad dependencies, as drivers that would otherwise work without the DVB core will now break: ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/tea5767.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/tea5761.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/tda827x.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/tda18218.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/qt1010.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/mt2266.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/mt20xx.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/mt2060.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/mc44s803.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/fc0013.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/fc0012.ko] undefined! ERROR: "dvb_tuner_simple_release" [drivers/media/tuners/fc0011.ko] undefined! So, we have to revert it. Note: as the argument for the release ops changed from "int" to "void", we needed to change it at the revert patch, to avoid compilation issues like: drivers/media/tuners/tea5767.c:437:23: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types] .release = tea5767_release, ^~~~~~~~~~~~~~~ This reverts commit 22a613e89825ea7a3984a968463cc6d425bd8856. Signed-off-by: Mauro Carvalho Chehab

[media] dvb_frontend: merge duplicate dvb_tuner_ops.release implementations

2016-11-18T17:05:44Z

Most release callback functions are identical: free the "tuner_priv" and clear it. Let's eliminate some bloat by providing this simple implementation in the dvb_frontend library. Signed-off-by: Max Kellermann Signed-off-by: Mauro Carvalho Chehab

[media] dvb-frontends: Don't use dynamic static allocation

2013-11-08T11:45:38Z

Dynamic static allocation is evil, as Kernel stack is too low, and compilation complains about it on some archs: drivers/media/dvb-frontends/bcm3510.c:230:1: warning: 'bcm3510_do_hab_cmd' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/itd1000.c:69:1: warning: 'itd1000_write_regs.constprop.0' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/mt312.c:126:1: warning: 'mt312_write' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/nxt200x.c:111:1: warning: 'nxt200x_writebytes' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/stb6100.c:216:1: warning: 'stb6100_write_reg_range.constprop.3' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/stv6110.c:98:1: warning: 'stv6110_write_regs' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/stv6110x.c:85:1: warning: 'stv6110x_write_regs' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/tda18271c2dd.c:147:1: warning: 'WriteRegs' uses dynamic stack allocation [enabled by default] drivers/media/dvb-frontends/zl10039.c:119:1: warning: 'zl10039_write' uses dynamic stack allocation [enabled by default] Instead, let's enforce a limit for the buffer. Considering that I2C transfers are generally limited, and that devices used on USB has a max data length of 64 bytes for the control URBs. So, it seem safe to use 64 bytes as the hard limit for all those devices. On most cases, the limit is a way lower than that, but this limit is small enough to not affect the Kernel stack, and it is a no brain limit, as using smaller ones would require to either carefully each driver or to take a look on each datasheet. Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] drivers/media/dvb-frontends/itd1000.c: removes unnecessary semicolon

2012-10-06T11:22:17Z

removes unnecessary semicolon Found by Coccinelle: http://coccinelle.lip6.fr/ Signed-off-by: Peter Senna Tschudin Signed-off-by: Mauro Carvalho Chehab