diff options
| author | Daniel Scheller <d.scheller@gmx.net> | 2017-08-12 07:56:01 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-08-20 07:09:33 -0400 |
| commit | adaf4df70521e656c38ace740f1d98096825a430 (patch) | |
| tree | 0592518b6547b2a7a396ba506b1db35e90abe6b0 /drivers/media/pci/ddbridge/ddbridge-main.c | |
| parent | fc3fb43e41a15a3508f919a825c186c6e5a22404 (diff) | |
media: ddbridge: Kconfig option to control the MSI modparam default
It is known that MSI interrupts - while working quite well so far - can
still cause issues on some hardware platforms (causing I2C timeouts due
to unhandled interrupts). The msi variable/option is set to 1 by default.
So, add a Kconfig option prefixed with "EXPERIMENTAL" that will control
the default value of that modparam, defaulting to off for a better
user experience and (guaranteed) stable operation "per default".
Cc: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <r.scobie@clear.net.nz>
Tested-by: Jasmin Jessich <jasmin@anw.at>
Tested-by: Dietmar Spingler <d_spingler@freenet.de>
Tested-by: Manfred Knick <Manfred.Knick@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/pci/ddbridge/ddbridge-main.c')
| -rw-r--r-- | drivers/media/pci/ddbridge/ddbridge-main.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/media/pci/ddbridge/ddbridge-main.c b/drivers/media/pci/ddbridge/ddbridge-main.c index 420335f4b7bf..181d5f17fe91 100644 --- a/drivers/media/pci/ddbridge/ddbridge-main.c +++ b/drivers/media/pci/ddbridge/ddbridge-main.c @@ -47,10 +47,17 @@ MODULE_PARM_DESC(adapter_alloc, "0-one adapter per io, 1-one per tab with io, 2-one per tab, 3-one for all"); #ifdef CONFIG_PCI_MSI +#ifdef CONFIG_DVB_DDBRIDGE_MSIENABLE int msi = 1; +#else +int msi; +#endif module_param(msi, int, 0444); -MODULE_PARM_DESC(msi, - " Control MSI interrupts: 0-disable, 1-enable (default)"); +#ifdef CONFIG_DVB_DDBRIDGE_MSIENABLE +MODULE_PARM_DESC(msi, "Control MSI interrupts: 0-disable, 1-enable (default)"); +#else +MODULE_PARM_DESC(msi, "Control MSI interrupts: 0-disable (default), 1-enable"); +#endif #endif int ci_bitrate = 70000; |