提交 08c11915 编写于 作者: Z Zheyu Ma 提交者: Zheng Zengkai

mISDN: Fix return values of the probe function

stable inclusion
from stable-5.10.80
commit ad01685177ce41afeab8c878405935c817487227
bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=ad01685177ce41afeab8c878405935c817487227

--------------------------------

[ Upstream commit e2112100 ]

During the process of driver probing, the probe function should return < 0
for failure, otherwise, the kernel will treat value > 0 as success.
Signed-off-by: NZheyu Ma <zheyuma97@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Reviewed-by: NWeilong Chen <chenweilong@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
上级 c514612c
......@@ -1994,14 +1994,14 @@ setup_hw(struct hfc_pci *hc)
pci_set_master(hc->pdev);
if (!hc->irq) {
printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
return 1;
return -EINVAL;
}
hc->hw.pci_io =
(char __iomem *)(unsigned long)hc->pdev->resource[1].start;
if (!hc->hw.pci_io) {
printk(KERN_WARNING "HFC-PCI: No IO-Mem for PCI card found\n");
return 1;
return -ENOMEM;
}
/* Allocate memory for FIFOS */
/* the memory needs to be on a 32k boundary within the first 4G */
......@@ -2012,7 +2012,7 @@ setup_hw(struct hfc_pci *hc)
if (!buffer) {
printk(KERN_WARNING
"HFC-PCI: Error allocating memory for FIFO!\n");
return 1;
return -ENOMEM;
}
hc->hw.fifos = buffer;
pci_write_config_dword(hc->pdev, 0x80, hc->hw.dmahandle);
......@@ -2022,7 +2022,7 @@ setup_hw(struct hfc_pci *hc)
"HFC-PCI: Error in ioremap for PCI!\n");
dma_free_coherent(&hc->pdev->dev, 0x8000, hc->hw.fifos,
hc->hw.dmahandle);
return 1;
return -ENOMEM;
}
printk(KERN_INFO
......
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