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path: root/drivers/media/dvb-frontends/au8522_common.c
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* media: move dvb kAPI headers to include/mediaMauro Carvalho Chehab2017-12-281-1/+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>
* [media] au8522: Set the initial modulationDevin Heitmueller2017-06-061-0/+1
| | | | | | | | | | We need to set the initial modulation on driver setup, or else any calls to GET_FRONTEND prior to the first SET_FRONTEND call will get back garbage. Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] dvb-frontends: don't break long linesMauro Carvalho Chehab2016-10-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Due to the 80-cols restrictions, and latter due to checkpatch warnings, several strings were broken into multiple lines. This is not considered a good practice anymore, as it makes harder to grep for strings at the source code. As we're right now fixing other drivers due to KERN_CONT, we need to be able to identify what printk strings don't end with a "\n". It is a way easier to detect those if we don't break long lines. So, join those continuation lines. The patch was generated via the script below, and manually adjusted if needed. </script> use Text::Tabs; while (<>) { if ($next ne "") { $c=$_; if ($c =~ /^\s+\"(.*)/) { $c2=$1; $next =~ s/\"\n$//; $n = expand($next); $funpos = index($n, '('); $pos = index($c2, '",'); if ($funpos && $pos > 0) { $s1 = substr $c2, 0, $pos + 2; $s2 = ' ' x ($funpos + 1) . substr $c2, $pos + 2; $s2 =~ s/^\s+//; $s2 = ' ' x ($funpos + 1) . $s2 if ($s2 ne ""); print unexpand("$next$s1\n"); print unexpand("$s2\n") if ($s2 ne ""); } else { print "$next$c2\n"; } $next=""; next; } else { print $next; } $next=""; } else { if (m/\"$/) { if (!m/\\n\"$/) { $next=$_; next; } } } print $_; } </script> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] au8522: Avoid memory leak for device config dataMauro Carvalho Chehab2015-12-211-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported by kmemleak: unreferenced object 0xffff880321e1da40 (size 32): comm "modprobe", pid 3309, jiffies 4295019569 (age 2359.636s) hex dump (first 32 bytes): 47 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 G............... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff82278c8e>] kmemleak_alloc+0x4e/0xb0 [<ffffffff8153c08c>] kmem_cache_alloc_trace+0x1ec/0x280 [<ffffffffa13a896a>] au8522_probe+0x19a/0xa30 [au8522_decoder] [<ffffffff81de0032>] i2c_device_probe+0x2b2/0x490 [<ffffffff81ca7004>] driver_probe_device+0x454/0xd90 [<ffffffff81ca7c1b>] __device_attach_driver+0x17b/0x230 [<ffffffff81ca15da>] bus_for_each_drv+0x11a/0x1b0 [<ffffffff81ca6a4d>] __device_attach+0x1cd/0x2c0 [<ffffffff81ca7d43>] device_initial_probe+0x13/0x20 [<ffffffff81ca451f>] bus_probe_device+0x1af/0x250 [<ffffffff81c9e0f3>] device_add+0x943/0x13b0 [<ffffffff81c9eb7a>] device_register+0x1a/0x20 [<ffffffff81de8626>] i2c_new_device+0x5d6/0x8f0 [<ffffffffa0d88ea4>] v4l2_i2c_new_subdev_board+0x1e4/0x250 [v4l2_common] [<ffffffffa0d88fe7>] v4l2_i2c_new_subdev+0xd7/0x110 [v4l2_common] [<ffffffffa13b2f76>] au0828_card_analog_fe_setup+0x2e6/0x3f0 [au0828] Checking where the error happens: (gdb) list *au8522_probe+0x19a 0x99a is in au8522_probe (drivers/media/dvb-frontends/au8522_decoder.c:761). 756 printk(KERN_INFO "au8522_decoder attach existing instance.\n"); 757 break; 758 } 759 760 demod_config = kzalloc(sizeof(struct au8522_config), GFP_KERNEL); 761 if (demod_config == NULL) { 762 if (instance == 1) 763 kfree(state); 764 return -ENOMEM; 765 } Shows that the error path is not being handled properly. The are actually several issues here: 1) config free should have been calling hybrid_tuner_release_state() function, by calling au8522_release_state(); 2) config is only allocated at the digital part. On the analog one, it is received from the caller. A complex logic could be added to address it, however, it is simpler to just embeed config inside the state. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* [media] move the dvb/frontends to drivers/media/dvb-frontendsMauro Carvalho Chehab2012-08-131-0/+277
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>
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