linux-kernel - [PATCH] USB: gadget: udc: Remove some dead code

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Date:   Sun, 10 Oct 2021 13:33:16 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     balbi@...nel.org, gregkh@...uxfoundation.org,
        yangyingliang@...wei.com
Cc:     linux-geode@...ts.infradead.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] USB: gadget: udc: Remove some dead code

The 'drd_wq' workqueue_struct has never been used.
It is only destroyed, but never created.

It was introduced in commit 1b9f35adb0ff ("usb: gadget: udc: Add Synopsys
UDC Platform driver")

Remove the corresponding dead code and save some space from the 'udc'
structure.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/usb/gadget/udc/amd5536udc.h    | 1 -
 drivers/usb/gadget/udc/snps_udc_plat.c | 5 -----
 2 files changed, 6 deletions(-)

diff --git a/drivers/usb/gadget/udc/amd5536udc.h b/drivers/usb/gadget/udc/amd5536udc.h
index 3296f3fcee48..055436016503 100644
--- a/drivers/usb/gadget/udc/amd5536udc.h
+++ b/drivers/usb/gadget/udc/amd5536udc.h
@@ -572,7 +572,6 @@ struct udc {
 	struct extcon_specific_cable_nb	extcon_nb;
 	struct notifier_block		nb;
 	struct delayed_work		drd_work;
-	struct workqueue_struct		*drd_wq;
 	u32				conn_type;
 };
 
diff --git a/drivers/usb/gadget/udc/snps_udc_plat.c b/drivers/usb/gadget/udc/snps_udc_plat.c
index 99805d60a7ab..8bbb89c80348 100644
--- a/drivers/usb/gadget/udc/snps_udc_plat.c
+++ b/drivers/usb/gadget/udc/snps_udc_plat.c
@@ -243,11 +243,6 @@ static int udc_plat_remove(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, NULL);
 
-	if (dev->drd_wq) {
-		flush_workqueue(dev->drd_wq);
-		destroy_workqueue(dev->drd_wq);
-	}
-
 	phy_power_off(dev->udc_phy);
 	phy_exit(dev->udc_phy);
 	extcon_unregister_notifier(dev->edev, EXTCON_USB, &dev->nb);
-- 
2.30.2