On Mon, Oct 22, 2012 at 02:15:24PM +0200, Jean Delvare wrote:
> Don't probe I2C buses on graphics cards by default. Their drivers will
> typically instantiate the I2C slave devices themselves as needed, and
> such probes have been occasionally reported to cause serious trouble.
> ---
> prog/detect/sensors-detect | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> --- lm-sensors.orig/prog/detect/sensors-detect 2012-08-27 13:18:01.000000000 +0200
> +++ lm-sensors/prog/detect/sensors-detect 2012-10-06 13:21:05.277537273 +0200
> @@ -3652,8 +3652,8 @@ sub scan_i2c_adapter
> my ($funcs, $chip, $addr, $class, $default, $input, @not_to_scan);
>
> $class = get_pci_class($i2c_adapters[$adapter_nr]->{parent});
> - if (($class & 0xff00) == 0x0400) {
> - # Do not probe adapters on PCI multimedia cards by default
> + # Do not probe adapters on multimedia and graphics cards by default
> + if (($class & 0xff00) == 0x0400 || ($class & 0xff00) == 0x0300) {
> $default = 0;
> } elsif ($class == 0x0c01 || $class == 0x0c05
> || find_i2c_adapter_driver($i2c_adapters[$adapter_nr]->{name})) {
>
Excellent idea.
Acked-by: Guenter Roeck <linux@xxxxxxxxxxxx>
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