From: Xiongfeng Wang <wangxiongfeng2@huawei.com>
To: <kishon@ti.com>, <lorenzo.pieralisi@arm.com>, <arnd@arndb.de>,
<gregkh@linuxfoundation.org>, <gustavo.pimentel@synopsys.com>
Cc: <linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<wangxiongfeng2@huawei.com>
Subject: [PATCH] misc: pci_endpoint_test: fix return value of error branch
Date: Thu, 19 Nov 2020 20:49:18 +0800 [thread overview]
Message-ID: <1605790158-6780-1-git-send-email-wangxiongfeng2@huawei.com> (raw)
We return 'err' in the error branch, but this variable may be set as
zero before. Fix it by setting 'err' as a negative value before we
goto the error label.
Fixes: e03327122e2c ("pci_endpoint_test: Add 2 ioctl commands")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
---
drivers/misc/pci_endpoint_test.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index 146ca6f..d384473 100644
--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -811,8 +811,10 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
pci_set_master(pdev);
- if (!pci_endpoint_test_alloc_irq_vectors(test, irq_type))
+ if (!pci_endpoint_test_alloc_irq_vectors(test, irq_type)) {
+ err = -EINVAL;
goto err_disable_irq;
+ }
for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
if (pci_resource_flags(pdev, bar) & IORESOURCE_MEM) {
@@ -849,8 +851,10 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
goto err_ida_remove;
}
- if (!pci_endpoint_test_request_irq(test))
+ if (!pci_endpoint_test_request_irq(test)) {
+ err = -EINVAL;
goto err_kfree_test_name;
+ }
misc_device = &test->miscdev;
misc_device->minor = MISC_DYNAMIC_MINOR;
--
1.7.12.4
reply other threads:[~2020-11-19 12:58 UTC|newest]
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