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SubjectRe: [PATCH v2]ipmi:ipmi_si_intf.c Fix warning: variable 'addr_space' set but not used
Date
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");
--
1.7.1

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