lwn.git/drivers/media/dvb/frontends/dib3000mc.c, branch v3.0.54

V4L/DVB: "dib3000mc: reduce large stack usage" fix

2010-08-02T19:42:59+00:00

s/ENODEV/ENOMEM, per Andreas. This fix got lost when someone merged "dib3000mc: reduce large stack usage". Please don't lose fixes. Signed-off-by: Andrew Morton Signed-off-by: Mauro Carvalho Chehab

V4L/DVB: dib3000mc: reduce large stack usage

2010-05-19T15:58:31+00:00

This patch reduces static stack usage of one of the 2 top offenders as listed by 'make checkstack': Building with CONFIG_FRAME_WARN=2048 produces: drivers/media/dvb/frontends/dib3000mc.c:853: warning: the frame size of 2224 bytes is larger than 2048 bytes and in 'make checkstack', the stack usage goes from: 0x00000bbd dib3000mc_i2c_enumeration [dib3000mc]: 2232 to unlisted with this patch. I don't have the hardware that is needed to test this patch. Signed-off-by: Randy Dunlap Signed-off-by: Andrew Morton Acked-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30T13:02:32+00:00

percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo Guess-its-ok-by: Christoph Lameter Cc: Ingo Molnar Cc: Lee Schermerhorn

V4L/DVB (7070): Fix some tuning problems

2008-01-25T21:05:17+00:00

The attached patch solves all my vdr tuning problems on a dib7000p nova-t stick as far as I could check within the last weekend. It disables streaming while tuning, like that the number of faulty TS packets is reduced. Signed-off-by: Soeren Moch Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab

V4L/DVB (7067): fix autoserach in the Hauppauge NOVA-T 500

2008-01-25T21:05:15+00:00

This patch fix autoserach in the Hauppauge NOVA-T 500. Signed-off-by: Jose Alberto Reguero Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab

V4L/DVB (5963): Module parameter description for SFN workaround

2007-10-10T01:04:04+00:00

Thanks to Matt Doran I found that there the module parameter description was not OK. Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab

V4L/DVB (5960): Add module parameter to enable SFN workaround

2007-10-10T01:03:50+00:00

In some areas in the world the broadcasters are not using the same cellid for each transmitter in a SFN. The DiBcom has problems with that setup. The module parameter buggy_sfn_workaround makes it re-usable. Signed-off-by: Matt Doran Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab

V4L/DVB (5955): Add support for DiB7070-based devices

2007-10-10T01:03:44+00:00

This changeset adds support for DiB7070P-based devices by adding the dib0070-driver and putting the appropriate layouts into dib0700_devices.c It also includes a new firmware for the dib0700 which is necessary to make the DiB7070-boards work and it also should fix the i2c-problems on some boards. Signed-off-by: Jean-Philippe Sibers Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab

V4L/DVB (5954): Sync with DiBcom Driver Release 2.1.3 + some improvements

2007-10-10T01:03:43+00:00

This changesets syncs the OpenSource driver for DiBcom demodulators with version 2.1.3 of DiBcom reference driver. There were some improvements since the last release for linux-dvb, e.g.: - stepped AGC startup - less space for initialization - diversity synchronization Furthermore this changeset contains the following things: - latest AGC settings for MT2266-based devices (namely Nova-TD and other) will improve the sensitivity - support for STK7700D reference design in dib0700-devices - remove some line-breaks when debugging is enabled - getting rid of layer between frontend_parameters and ofdm_channel used in dib*-drivers Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab

V4L/DVB (4998): [PATCH] DIB3000MC and NOVA T USB2 #2

2007-02-21T15:34:14+00:00

Second part of the patch to make the autosearch work again with DiB3000P/MC. Signed-off-by: Mario Rossi Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab