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From: Tang Bin <tangbin@cmss.chinamobile.com>
To: balbi@kernel.org, gregkh@linuxfoundation.org,
	thierry.reding@gmail.com, jonathanh@nvidia.com
Cc: linux-usb@vger.kernel.org, linux-tegra@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Tang Bin <tangbin@cmss.chinamobile.com>
Subject: [PATCH] usb: gadget: tegra-xudc: Fix error check in tegra_xudc_powerdomain_init()
Date: Wed, 25 May 2022 21:53:32 +0800	[thread overview]
Message-ID: <20220525135332.23144-1-tangbin@cmss.chinamobile.com> (raw)

dev_pm_domain_attach_by_name() may return NULL in some cases,
so IS_ERR() doesn't meet the requirements. Thus fix it.

Fixes: 49db427232fe ("usb: gadget: Add UDC driver for tegra XUSB device mode controller")
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
---
 drivers/usb/gadget/udc/tegra-xudc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c
index d9c406bdb..c25765628 100644
--- a/drivers/usb/gadget/udc/tegra-xudc.c
+++ b/drivers/usb/gadget/udc/tegra-xudc.c
@@ -3691,15 +3691,15 @@ static int tegra_xudc_powerdomain_init(struct tegra_xudc *xudc)
 	int err;
 
 	xudc->genpd_dev_device = dev_pm_domain_attach_by_name(dev, "dev");
-	if (IS_ERR(xudc->genpd_dev_device)) {
-		err = PTR_ERR(xudc->genpd_dev_device);
+	if (IS_ERR_OR_NULL(xudc->genpd_dev_device)) {
+		err = PTR_ERR(xudc->genpd_dev_device) ? : -ENODATA;
 		dev_err(dev, "failed to get device power domain: %d\n", err);
 		return err;
 	}
 
 	xudc->genpd_dev_ss = dev_pm_domain_attach_by_name(dev, "ss");
-	if (IS_ERR(xudc->genpd_dev_ss)) {
-		err = PTR_ERR(xudc->genpd_dev_ss);
+	if (IS_ERR_OR_NULL(xudc->genpd_dev_ss)) {
+		err = PTR_ERR(xudc->genpd_dev_ss) ? : -ENODATA;
 		dev_err(dev, "failed to get SuperSpeed power domain: %d\n", err);
 		return err;
 	}
-- 
2.20.1.windows.1




                 reply	other threads:[~2022-05-25 13:52 UTC|newest]

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