* [PATCH v2 1/3] staging: rtl8712: Place constants on the right side of '&'
@ 2016-02-21 8:21 Bhaktipriya Shridhar
2016-03-11 18:29 ` [Outreachy kernel] " Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Bhaktipriya Shridhar @ 2016-02-21 8:21 UTC (permalink / raw)
To: outreachy-kernel
Move constants to the right of binary operator '&'.
This issue was identified using the Coccinelle script:
@@
constant c,c1;
expression e,e1,e2;
local idexpression i;
binary operator b = {==,!=,&,|};
@@
(
c b (c1)
|
i b e1
|
c | e1 | e2 | ...
|
c | (e ? e1 : e2)
|
- c
+ e
b
- e
+ c
)
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
---
Changes in v2:
-change subject line
-inserted Coccinelle script
drivers/staging/rtl8712/wifi.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/rtl8712/wifi.h b/drivers/staging/rtl8712/wifi.h
index 7a352c4..ee41971 100644
--- a/drivers/staging/rtl8712/wifi.h
+++ b/drivers/staging/rtl8712/wifi.h
@@ -260,12 +260,12 @@ enum WIFI_REG_DOMAIN {
*(unsigned short *)((addr_t)(pbuf) + 22) = \
((*(unsigned short *)((addr_t)(pbuf) + 22)) & \
le16_to_cpu((unsigned short)0x000f)) | \
- le16_to_cpu((unsigned short)(0xfff0 & (num << 4))); \
+ le16_to_cpu((unsigned short)((num << 4) & 0xfff0)); \
})
#define SetDuration(pbuf, dur) ({ \
*(unsigned short *)((addr_t)(pbuf) + 2) |= \
- cpu_to_le16(0xffff & (dur)); \
+ cpu_to_le16((dur) & 0xffff); \
})
#define SetPriority(pbuf, tid) ({ \
--
2.1.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [Outreachy kernel] [PATCH v2 1/3] staging: rtl8712: Place constants on the right side of '&'
2016-02-21 8:21 [PATCH v2 1/3] staging: rtl8712: Place constants on the right side of '&' Bhaktipriya Shridhar
@ 2016-03-11 18:29 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2016-03-11 18:29 UTC (permalink / raw)
To: Bhaktipriya Shridhar; +Cc: outreachy-kernel
On Sun, Feb 21, 2016 at 01:51:06PM +0530, Bhaktipriya Shridhar wrote:
> Move constants to the right of binary operator '&'.
> This issue was identified using the Coccinelle script:
> @@
> constant c,c1;
> expression e,e1,e2;
> local idexpression i;
> binary operator b = {==,!=,&,|};
> @@
>
> (
> c b (c1)
> |
> i b e1
> |
> c | e1 | e2 | ...
> |
> c | (e ? e1 : e2)
> |
> - c
> + e
> b
> - e
> + c
> )
>
> Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
> ---
> Changes in v2:
> -change subject line
> -inserted Coccinelle script
> drivers/staging/rtl8712/wifi.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/rtl8712/wifi.h b/drivers/staging/rtl8712/wifi.h
> index 7a352c4..ee41971 100644
> --- a/drivers/staging/rtl8712/wifi.h
> +++ b/drivers/staging/rtl8712/wifi.h
> @@ -260,12 +260,12 @@ enum WIFI_REG_DOMAIN {
> *(unsigned short *)((addr_t)(pbuf) + 22) = \
> ((*(unsigned short *)((addr_t)(pbuf) + 22)) & \
> le16_to_cpu((unsigned short)0x000f)) | \
> - le16_to_cpu((unsigned short)(0xfff0 & (num << 4))); \
> + le16_to_cpu((unsigned short)((num << 4) & 0xfff0)); \
> })
>
> #define SetDuration(pbuf, dur) ({ \
> *(unsigned short *)((addr_t)(pbuf) + 2) |= \
> - cpu_to_le16(0xffff & (dur)); \
> + cpu_to_le16((dur) & 0xffff); \
Why? What does this change really? Is it needed? The code is just as
readable before as after, which should be the only reason you do stuff
like this.
greg k-h
^ permalink raw reply [flat|nested] 2+ messages in thread
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2016-02-21 8:21 [PATCH v2 1/3] staging: rtl8712: Place constants on the right side of '&' Bhaktipriya Shridhar
2016-03-11 18:29 ` [Outreachy kernel] " Greg KH
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