Linux-USB Archive on lore.kernel.org
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From: Ladislav Michl <ladis@linux-mips.org>
To: linux-usb@vger.kernel.org, linux-serial@vger.kernel.org
Cc: "Felipe Balbi" <balbi@kernel.org>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Subject: [PATCH v2 2/5] usb: gadget: u_serial: Remove console specific alloc/free req functions
Date: Sat, 13 Jul 2019 23:10:58 +0200
Message-ID: <20190713211057.GC25753@lenoch> (raw)
In-Reply-To: <20190713210853.GA25753@lenoch>

Driver already contains request allocation and deallocation
functions, so use them also for console_req.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
---
 Changes:
 - v2: Move locking changes into separate patch

 drivers/usb/gadget/function/u_serial.c | 28 ++------------------------
 1 file changed, 2 insertions(+), 26 deletions(-)

diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c
index 876af4085cea..cb88a640179e 100644
--- a/drivers/usb/gadget/function/u_serial.c
+++ b/drivers/usb/gadget/function/u_serial.c
@@ -892,30 +892,6 @@ static struct tty_driver *gs_tty_driver;
 static struct gscons_info gscons_info;
 static struct console gserial_cons;
 
-static struct usb_request *gs_request_new(struct usb_ep *ep)
-{
-	struct usb_request *req = usb_ep_alloc_request(ep, GFP_ATOMIC);
-	if (!req)
-		return NULL;
-
-	req->buf = kmalloc(ep->maxpacket, GFP_ATOMIC);
-	if (!req->buf) {
-		usb_ep_free_request(ep, req);
-		return NULL;
-	}
-
-	return req;
-}
-
-static void gs_request_free(struct usb_request *req, struct usb_ep *ep)
-{
-	if (!req)
-		return;
-
-	kfree(req->buf);
-	usb_ep_free_request(ep, req);
-}
-
 static void gs_complete_out(struct usb_ep *ep, struct usb_request *req)
 {
 	struct gscons_info *info = &gscons_info;
@@ -955,7 +931,7 @@ static int gs_console_connect(int port_num)
 	port = ports[port_num].port;
 	ep = port->port_usb->in;
 	if (!info->console_req) {
-		info->console_req = gs_request_new(ep);
+		info->console_req = gs_alloc_req(ep, ep->maxpacket, GFP_ATOMIC);
 		if (!info->console_req)
 			return -ENOMEM;
 		info->console_req->complete = gs_complete_out;
@@ -974,7 +950,7 @@ static void gs_console_disconnect(struct usb_ep *ep)
 	struct gscons_info *info = &gscons_info;
 	struct usb_request *req = info->console_req;
 
-	gs_request_free(req, ep);
+	gs_free_req(ep, req);
 	info->console_req = NULL;
 }
 
-- 
2.22.0


  parent reply index

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-13 21:08 [PATCH v2 0/5] usb: gadget: u_serial: Fix and cleanup Ladislav Michl
2019-07-13 21:10 ` [PATCH v2 1/5] usb: gadget: u_serial: Fix console_req complete event race Ladislav Michl
2019-07-13 21:10 ` Ladislav Michl [this message]
2019-07-13 21:11 ` [PATCH v2 3/5] usb: gadget: u_serial: Fix console_req access race Ladislav Michl
2019-07-13 21:11 ` [PATCH v2 4/5] usb: gadget: u_serial: Fix starving write Ladislav Michl
2019-07-13 21:12 ` [PATCH v2 5/5] usb: gadget: u_serial: Use bool for req_busy Ladislav Michl
2019-07-14 10:04 ` [PATCH v2 0/5] usb: gadget: u_serial: Fix and cleanup Michał Mirosław
2019-07-14 11:37   ` Michał Mirosław
2019-07-14 13:22     ` Ladislav Michl
2019-07-15 10:40   ` Ladislav Michl

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