* [PATCH] usb: cleanup with list_first_entry_or_null()
@ 2016-09-12 17:46 Masahiro Yamada
2016-09-13 5:51 ` Felipe Balbi
0 siblings, 1 reply; 3+ messages in thread
From: Masahiro Yamada @ 2016-09-12 17:46 UTC (permalink / raw)
To: linux-usb
Cc: Masahiro Yamada, Felipe Balbi, linux-kernel, Yoshihiro Shimoda,
Julia Lawall, Greg Kroah-Hartman, John Youn
The combo of list_empty() check and return list_first_entry()
can be replaced with list_first_entry_or_null().
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
drivers/usb/dwc2/gadget.c | 6 ++----
drivers/usb/dwc3/gadget.h | 5 +----
drivers/usb/renesas_usbhs/fifo.c | 5 +----
3 files changed, 4 insertions(+), 12 deletions(-)
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index af46adf..28a250a 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -1098,10 +1098,8 @@ static int dwc2_hsotg_ep_sethalt(struct usb_ep *ep, int value, bool now);
*/
static struct dwc2_hsotg_req *get_ep_head(struct dwc2_hsotg_ep *hs_ep)
{
- if (list_empty(&hs_ep->queue))
- return NULL;
-
- return list_first_entry(&hs_ep->queue, struct dwc2_hsotg_req, queue);
+ return list_first_entry_or_null(&hs_ep->queue, struct dwc2_hsotg_req,
+ queue);
}
/**
diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h
index e4a1d97..3129bcf 100644
--- a/drivers/usb/dwc3/gadget.h
+++ b/drivers/usb/dwc3/gadget.h
@@ -62,10 +62,7 @@ struct dwc3;
static inline struct dwc3_request *next_request(struct list_head *list)
{
- if (list_empty(list))
- return NULL;
-
- return list_first_entry(list, struct dwc3_request, list);
+ return list_first_entry_or_null(list, struct dwc3_request, list);
}
static inline void dwc3_gadget_move_started_request(struct dwc3_request *req)
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index 857e783..d1af831 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -100,10 +100,7 @@ static void __usbhsf_pkt_del(struct usbhs_pkt *pkt)
static struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe)
{
- if (list_empty(&pipe->list))
- return NULL;
-
- return list_first_entry(&pipe->list, struct usbhs_pkt, node);
+ return list_first_entry_or_null(&pipe->list, struct usbhs_pkt, node);
}
static void usbhsf_fifo_clear(struct usbhs_pipe *pipe,
--
1.9.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] usb: cleanup with list_first_entry_or_null()
2016-09-12 17:46 [PATCH] usb: cleanup with list_first_entry_or_null() Masahiro Yamada
@ 2016-09-13 5:51 ` Felipe Balbi
2016-09-13 19:17 ` John Youn
0 siblings, 1 reply; 3+ messages in thread
From: Felipe Balbi @ 2016-09-13 5:51 UTC (permalink / raw)
To: Masahiro Yamada, linux-usb
Cc: Masahiro Yamada, linux-kernel, Yoshihiro Shimoda, Julia Lawall,
Greg Kroah-Hartman, John Youn
[-- Attachment #1: Type: text/plain, Size: 364 bytes --]
Hi Masahiro,
Masahiro Yamada <yamada.masahiro@socionext.com> writes:
> The combo of list_empty() check and return list_first_entry()
> can be replaced with list_first_entry_or_null().
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---
Care to split this into two patches (one for dwc2 and one for dwc3)?
thanks
--
balbi
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 800 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] usb: cleanup with list_first_entry_or_null()
2016-09-13 5:51 ` Felipe Balbi
@ 2016-09-13 19:17 ` John Youn
0 siblings, 0 replies; 3+ messages in thread
From: John Youn @ 2016-09-13 19:17 UTC (permalink / raw)
To: Felipe Balbi, Masahiro Yamada, linux-usb
Cc: linux-kernel, Yoshihiro Shimoda, Julia Lawall,
Greg Kroah-Hartman, John Youn
On 9/12/2016 10:52 PM, Felipe Balbi wrote:
>
> Hi Masahiro,
>
> Masahiro Yamada <yamada.masahiro@socionext.com> writes:
>> The combo of list_empty() check and return list_first_entry()
>> can be replaced with list_first_entry_or_null().
>>
>> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
>> ---
>
> Care to split this into two patches (one for dwc2 and one for dwc3)?
>
> thanks
>
For the dwc2 portion, you can add my acked-by.
Acked-by: John Youn <johnyoun@synopsys.com>
John
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2016-09-13 19:17 UTC | newest]
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2016-09-12 17:46 [PATCH] usb: cleanup with list_first_entry_or_null() Masahiro Yamada
2016-09-13 5:51 ` Felipe Balbi
2016-09-13 19:17 ` John Youn
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