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SubjectRe: [PATCH v2]ipmi:ipmi_si_intf.c Fix warning: variable 'addr_space' set but not used
On 07/06/2010 01:14 PM, Sergey V. wrote:
> On Tuesday 06 of July 2010 22:30:00 Justin P. Mattock wrote:
>>
>>> Hello Justin.
>>>
>>> [...]
>>>> @@ -2021,10 +2020,6 @@ static __devinit int try_init_spmi(struct SPMITable
>>> *spmi)
>>>> }
>>>>
>>>> if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
>>>> - addr_space = IPMI_MEM_ADDR_SPACE;
>>>> - else
>>>> - addr_space = IPMI_IO_ADDR_SPACE;
>>>> -
>>>> info = kzalloc(sizeof(*info), GFP_KERNEL);
>>>> if (!info) {
>>>> printk(KERN_ERR PFX "Could not allocate SI data (3)\n");
>>>
>>> This looks like after applying this patch 'info = ...' will be part of
>>> if statement (without indent before 'info = ...')
>>>
>>> if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
>>> info = kzalloc(sizeof(*info), GFP_KERNEL);
>>>
>>> It's correct?
>>>
>>> Thanks
>>>
>>
>> the original patch I dont think this is correct. a bit confusing with
>> the if(!info) at the bottom of this.
>> here's an updated version if it looks to be correct I'll resend if not
>> I'll redu:
>>
>>
>> ---
>> drivers/char/ipmi/ipmi_si_intf.c | 7 -------
>> 1 files changed, 0 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/char/ipmi/ipmi_si_intf.c
>> b/drivers/char/ipmi/ipmi_si_intf.c
>> index 094bdc3..ef03ecd 100644
>> --- a/drivers/char/ipmi/ipmi_si_intf.c
>> +++ b/drivers/char/ipmi/ipmi_si_intf.c
>> @@ -2013,19 +2013,12 @@ struct SPMITable {
>> static __devinit int try_init_spmi(struct SPMITable *spmi)
>> {
>> struct smi_info *info;
>> - u8 addr_space;
>>
>> if (spmi->IPMIlegacy != 1) {
>> printk(KERN_INFO PFX "Bad SPMI legacy %d\n", spmi->IPMIlegacy);
>> return -ENODEV;
>> }
>>
>> - if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
>> - addr_space = IPMI_MEM_ADDR_SPACE;
>> - else
>> - addr_space = IPMI_IO_ADDR_SPACE;
>> -
>> - info = kzalloc(sizeof(*info), GFP_KERNEL);
>> if (!info) {
>> printk(KERN_ERR PFX "Could not allocate SI data (3)\n");
>> return -ENOMEM;
>> -- 1.7.1.rc1.21.gf3bd6
>>
>> Thanks for the info on this..
>>
>> Justin P. Mattock
>>
>
> Sorry, but I think that new patch is not correct.
>
> Why do you delete this row "info = kzalloc(sizeof(*info), GFP_KERNEL)"?
> There is the only one unused variable `addr_space`, so I think it should
> be removed, that's all.
>
> The following code is correct and not need to be changed:
>
> info = kzalloc(sizeof(*info), GFP_KERNEL);
> if (!info) {
> printk(KERN_ERR PFX "Could not allocate SI data (3)\n");
>
> Please see below my patch.
> Thanks.
>
> ---
> Fix compile warning
> drivers/char/ipmi/ipmi_si_intf.c: In function 'try_init_spmi':
> drivers/char/ipmi/ipmi_si_intf.c:2016:8: warning: variable 'addr_space' set but
> not used
>
> Signed-off-by: Sergey V.<sftp.mtuci@gmail.com>
> ---
> drivers/char/ipmi/ipmi_si_intf.c | 6 ------
> 1 files changed, 0 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/char/ipmi/ipmi_si_intf.c
> b/drivers/char/ipmi/ipmi_si_intf.c
> index 094bdc3..1f5f025 100644
> --- a/drivers/char/ipmi/ipmi_si_intf.c
> +++ b/drivers/char/ipmi/ipmi_si_intf.c
> @@ -2013,18 +2013,12 @@ struct SPMITable {
> static __devinit int try_init_spmi(struct SPMITable *spmi)
> {
> struct smi_info *info;
> - u8 addr_space;
>
> if (spmi->IPMIlegacy != 1) {
> printk(KERN_INFO PFX "Bad SPMI legacy %d\n", spmi->IPMIlegacy);
> return -ENODEV;
> }
>
> - if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
> - addr_space = IPMI_MEM_ADDR_SPACE;
> - else
> - addr_space = IPMI_IO_ADDR_SPACE;
> -
> info = kzalloc(sizeof(*info), GFP_KERNEL);
> if (!info) {
> printk(KERN_ERR PFX "Could not allocate SI data (3)\n");


well if everybody agrees with your change then all good...

Justin P. Mattock


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