do_div() checks the type strictly. 'cycles_t' may be 32-bit under quite
a few architectures (parisc, arm, avr32 ...). So use 'uint64_t' instead
of, the related warning (with allmodconfig under parisc):
CC [M] drivers/net/wireless/ath/wil6210/debugfs.o
In file included from arch/parisc/include/generated/asm/div64.h:1:0,
from include/linux/kernel.h:124,
from include/linux/list.h:8,
from include/linux/module.h:9,
from drivers/net/wireless/ath/wil6210/debugfs.c:17:
drivers/net/wireless/ath/wil6210/debugfs.c: In function
‘wil_vring_debugfs_show’:
include/asm-generic/div64.h:43:28: warning: comparison of distinct
pointer types lacks a cast
(void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
^
drivers/net/wireless/ath/wil6210/debugfs.c:107:4: note: in expansion
of macro ‘do_div’
do_div(idle, total);
^
In file included from include/uapi/linux/stddef.h:1:0,
from include/linux/stddef.h:4,
from ./include/uapi/linux/posix_types.h:4,
from include/uapi/linux/types.h:13,
from include/linux/types.h:5,
from include/linux/list.h:4,
from include/linux/module.h:9,
from drivers/net/wireless/ath/wil6210/debugfs.c:17:
include/asm-generic/div64.h:44:18: warning: right shift count >= width
of type [-Wshift-count-overflow]
if (likely(((n) >> 32) == 0)) { \
^
include/linux/compiler.h:159:40: note: in definition of macro ‘likely’
# define likely(x) __builtin_expect(!!(x), 1)
^
drivers/net/wireless/ath/wil6210/debugfs.c:107:4: note: in expansion
of macro ‘do_div’
do_div(idle, total);
^
In file included from arch/parisc/include/generated/asm/div64.h:1:0,
from include/linux/kernel.h:124,
from include/linux/list.h:8,
from include/linux/module.h:9,
from drivers/net/wireless/ath/wil6210/debugfs.c:17:
include/asm-generic/div64.h:48:22: warning: passing argument 1 of
‘__div64_32’ from incompatible pointer type [-Wincompatible-pointer-types]
__rem = __div64_32(&(n), __base); \
^
drivers/net/wireless/ath/wil6210/debugfs.c:107:4: note: in expansion
of macro ‘do_div’
do_div(idle, total);
^
include/asm-generic/div64.h:35:17: note: expected ‘uint64_t * {aka
long long unsigned int *}’ but argument is of type ‘cycles_t * {aka long
unsigned int *}’
extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
^
Signed-off-by: Chen Gang <[email protected]>
---
drivers/net/wireless/ath/wil6210/debugfs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c
b/drivers/net/wireless/ath/wil6210/debugfs.c
index 4e6e145..cd991fa 100644
--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -101,8 +101,8 @@ static int wil_vring_debugfs_show(struct seq_file
*s, void *data)
char name[10];
/* performance monitoring */
cycles_t now = get_cycles();
- cycles_t idle = txdata->idle * 100;
- cycles_t total = now - txdata->begin;
+ uint64_t idle = txdata->idle * 100;
+ uint64_t total = now - txdata->begin;
do_div(idle, total);
txdata->begin = now;
--
1.7.9.5
On 12/24/2014 11:35 PM, Kalle Valo wrote:
> Chen Gang <[email protected]> writes:
>
>> On 12/24/2014 11:11 PM, Kalle Valo wrote:
>>> Chen Gang <[email protected]> writes:
>>>
>>>> Oh, sorry, I forgot the word wrap (after change a new pc). I shall send
>>>> patch v2 for it.
>>>
>>> While at it, could you also please simplify the title. You don't have to
>>> put the full directory there, it just makes it more difficult to read.
>>> This should be enough:
>>>
>>> wil6210: Use 'uint64_t' instead of 'cycles_t' to avoid warnings
>>>
>>
>> Oh, I have sent patch v2, if necessary, I will send patch v3 for it.
>> (if necessary, please let me know)
>
> I can edit it this time, but in the future please be use less verbose
> titles.
>
OK, thanks. Next, I shall use the short subject for drivers.
Thanks.
--
Chen Gang
Open, share, and attitude like air, water, and life which God blessed
Oh, sorry, I forgot the word wrap (after change a new pc). I shall send
patch v2 for it.
On 12/24/2014 10:40 PM, Chen Gang wrote:
> do_div() checks the type strictly. 'cycles_t' may be 32-bit under quite
> a few architectures (parisc, arm, avr32 ...). So use 'uint64_t' instead
> of, the related warning (with allmodconfig under parisc):
>
> CC [M] drivers/net/wireless/ath/wil6210/debugfs.o
> In file included from arch/parisc/include/generated/asm/div64.h:1:0,
> from include/linux/kernel.h:124,
> from include/linux/list.h:8,
> from include/linux/module.h:9,
> from drivers/net/wireless/ath/wil6210/debugfs.c:17:
> drivers/net/wireless/ath/wil6210/debugfs.c: In function
> ‘wil_vring_debugfs_show’:
> include/asm-generic/div64.h:43:28: warning: comparison of distinct
> pointer types lacks a cast
> (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
> ^
> drivers/net/wireless/ath/wil6210/debugfs.c:107:4: note: in expansion
> of macro ‘do_div’
> do_div(idle, total);
> ^
> In file included from include/uapi/linux/stddef.h:1:0,
> from include/linux/stddef.h:4,
> from ./include/uapi/linux/posix_types.h:4,
> from include/uapi/linux/types.h:13,
> from include/linux/types.h:5,
> from include/linux/list.h:4,
> from include/linux/module.h:9,
> from drivers/net/wireless/ath/wil6210/debugfs.c:17:
> include/asm-generic/div64.h:44:18: warning: right shift count >= width
> of type [-Wshift-count-overflow]
> if (likely(((n) >> 32) == 0)) { \
> ^
> include/linux/compiler.h:159:40: note: in definition of macro ‘likely’
> # define likely(x) __builtin_expect(!!(x), 1)
> ^
> drivers/net/wireless/ath/wil6210/debugfs.c:107:4: note: in expansion
> of macro ‘do_div’
> do_div(idle, total);
> ^
> In file included from arch/parisc/include/generated/asm/div64.h:1:0,
> from include/linux/kernel.h:124,
> from include/linux/list.h:8,
> from include/linux/module.h:9,
> from drivers/net/wireless/ath/wil6210/debugfs.c:17:
> include/asm-generic/div64.h:48:22: warning: passing argument 1 of
> ‘__div64_32’ from incompatible pointer type [-Wincompatible-pointer-types]
> __rem = __div64_32(&(n), __base); \
> ^
> drivers/net/wireless/ath/wil6210/debugfs.c:107:4: note: in expansion
> of macro ‘do_div’
> do_div(idle, total);
> ^
> include/asm-generic/div64.h:35:17: note: expected ‘uint64_t * {aka
> long long unsigned int *}’ but argument is of type ‘cycles_t * {aka long
> unsigned int *}’
> extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
> ^
>
> Signed-off-by: Chen Gang <[email protected]>
> ---
> drivers/net/wireless/ath/wil6210/debugfs.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c
> b/drivers/net/wireless/ath/wil6210/debugfs.c
> index 4e6e145..cd991fa 100644
> --- a/drivers/net/wireless/ath/wil6210/debugfs.c
> +++ b/drivers/net/wireless/ath/wil6210/debugfs.c
> @@ -101,8 +101,8 @@ static int wil_vring_debugfs_show(struct seq_file
> *s, void *data)
> char name[10];
> /* performance monitoring */
> cycles_t now = get_cycles();
> - cycles_t idle = txdata->idle * 100;
> - cycles_t total = now - txdata->begin;
> + uint64_t idle = txdata->idle * 100;
> + uint64_t total = now - txdata->begin;
>
> do_div(idle, total);
> txdata->begin = now;
>
--
Chen Gang
Open, share, and attitude like air, water, and life which God blessed
Chen Gang <[email protected]> writes:
> Oh, sorry, I forgot the word wrap (after change a new pc). I shall send
> patch v2 for it.
While at it, could you also please simplify the title. You don't have to
put the full directory there, it just makes it more difficult to read.
This should be enough:
wil6210: Use 'uint64_t' instead of 'cycles_t' to avoid warnings
I see quite a few patches with titles like 'drivers: net: wireless: ath:
fix foo'. Where an earth is that coming from? Bad documentation
somewhere?
--
Kalle Valo
On 12/24/2014 11:11 PM, Kalle Valo wrote:
> Chen Gang <[email protected]> writes:
>
>> Oh, sorry, I forgot the word wrap (after change a new pc). I shall send
>> patch v2 for it.
>
> While at it, could you also please simplify the title. You don't have to
> put the full directory there, it just makes it more difficult to read.
> This should be enough:
>
> wil6210: Use 'uint64_t' instead of 'cycles_t' to avoid warnings
>
Oh, I have sent patch v2, if necessary, I will send patch v3 for it.
(if necessary, please let me know)
> I see quite a few patches with titles like 'drivers: net: wireless: ath:
> fix foo'. Where an earth is that coming from? Bad documentation
> somewhere?
>
I guess, this can let the patch makers have a easier life, e.g. for me,
I may send patches for various sub-systems (arch/*, drivers/*, net/*,
also another projects ...).
Thanks.
--
Chen Gang
Open, share, and attitude like air, water, and life which God blessed
Chen Gang <[email protected]> writes:
> On 12/24/2014 11:11 PM, Kalle Valo wrote:
>> Chen Gang <[email protected]> writes:
>>
>>> Oh, sorry, I forgot the word wrap (after change a new pc). I shall send
>>> patch v2 for it.
>>
>> While at it, could you also please simplify the title. You don't have to
>> put the full directory there, it just makes it more difficult to read.
>> This should be enough:
>>
>> wil6210: Use 'uint64_t' instead of 'cycles_t' to avoid warnings
>>
>
> Oh, I have sent patch v2, if necessary, I will send patch v3 for it.
> (if necessary, please let me know)
I can edit it this time, but in the future please be use less verbose
titles.
--
Kalle Valo