From ee25673d8fae7184b6a8701b6c2b42e1b4469f55 Mon Sep 17 00:00:00 2001
From: Zheyu Ma <zheyuma97@gmail.com>
Date: Mon, 18 Oct 2021 14:20:38 +0000
Subject: [PATCH] mISDN: Fix return values of the probe function
Git-commit: e211210098cb7490db2183d725f5c0f10463a704
Patch-mainline: v5.15-rc7
References: stable-5.14.19
[ Upstream commit e211210098cb7490db2183d725f5c0f10463a704 ]
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: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/isdn/hardware/mISDN/hfcpci.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index e501cb03f211..bd087cca1c1d 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -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
--
2.26.2