lkml.org 
[lkml]   [2014]   [Jan]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] ACPI/Battery: Add a _BIX quirk for NEC LZ750/LS
On 01/06/2014 10:32 PM, Rafael J. Wysocki wrote:
> On Monday, January 06, 2014 10:07:35 PM Lan Tianyu wrote:
>> On 01/04/2014 07:12 AM, Dmitry Torokhov wrote:
>>> On Fri, Jan 03, 2014 at 05:01:11PM -0200, Leandro Dorileo wrote:
>>>> On Thu, Jan 02, 2014 at 03:37:57PM +0800, Lan Tianyu wrote:
>>>>> The aml method _BIX of NEC LZ750/LS returns a broken package which
>>>>> skip the first member "Revision" according ACPI 5.0 spec Table 10-234.
>>>>>
>>>>> This patch is to add a quirk for this machine to skip member "Revision"
>>>>> during parsing _BIX returned package.
>>>>>
>>>>> Reported-and-tested-by: Francisco Castro <fcr@adinet.com.uy>
>>>>> Reference: https://bugzilla.kernel.org/show_bug.cgi?id=67351
>>>>> Cc: 3.8+ <stable@vger.kernel.org>
>>>>> Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
>>>>> ---
>>>>> drivers/acpi/battery.c | 28 +++++++++++++++++++++++++++-
>>>>> 1 file changed, 27 insertions(+), 1 deletion(-)
>>>>>
>>>>> diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
>>>>> index fbf1ace..3d64a87 100644
>>>>> --- a/drivers/acpi/battery.c
>>>>> +++ b/drivers/acpi/battery.c
>>>>> @@ -62,6 +62,7 @@ MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
>>>>> MODULE_DESCRIPTION("ACPI Battery Driver");
>>>>> MODULE_LICENSE("GPL");
>>>>>
>>>>> +static int battery_bix_broken_package;
>>>>> static unsigned int cache_time = 1000;
>>>>> module_param(cache_time, uint, 0644);
>>>>> MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
>>>>> @@ -416,7 +417,12 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
>>>>> ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s", name));
>>>>> return -ENODEV;
>>>>> }
>>>>> - if (test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags))
>>>>> +
>>>>> + if (battery_bix_broken_package)
>>>>> + result = extract_package(battery, buffer.pointer,
>>>>> + extended_info_offsets + 1,
>>>>> + ARRAY_SIZE(extended_info_offsets) - 1);
>>>>> + else if (test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags))
>>>>> result = extract_package(battery, buffer.pointer,
>>>>> extended_info_offsets,
>>>>> ARRAY_SIZE(extended_info_offsets));
>>>>> @@ -754,6 +760,24 @@ static int battery_notify(struct notifier_block *nb,
>>>>> return 0;
>>>>> }
>>>>>
>>>>> +static int battery_bix_package_quirk(const struct dmi_system_id *id)
>>>>> +{
>>>>> + battery_bix_broken_package = 1;
>>>>> + return 0;
>>>>> +}
>>>>> +
>>>>
>>>>
>>>> Do you really need this callback? Why don't you just do:
>>>>
>>>> if (dmi_check_system(bat_dmi_table))
>>>> battery_bix_broken_package = 1;
>>>>
>>>
>>> Callback would be useful if we were to print the DMI data of the match,
>>> otherwise not so much.
>>>
>>
>> Hi Leandro & Dmitry:
>> Thanks for your review. I select to callback mode as it's convenient to
>> add a new quirk for other machines if need. This Just likes what we have
>> done for the other ACPI drivers(E,G ac, processor_idle, video, thermal
>> and so on.).
>
> We can switch to callbacks when we actually need them. Please keep things
> as simple as reasonably possible.

Ok. I will update it.

>
> Thanks!
>


--
Best Regards
Tianyu Lan


\
 
 \ /
  Last update: 2014-01-06 15:41    [W:0.117 / U:0.560 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site