In case of error, the function pcim_iomap() returns NULL pointer not
ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.
Fixes: 7740d04d901d ("usb: dwc3: pci: Enable ULPI Refclk on platforms where the firmware does not")
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
drivers/usb/dwc3/dwc3-pci.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 5edd794..1286076 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -85,8 +85,8 @@ static int dwc3_byt_enable_ulpi_refclock(struct pci_dev *pci)
u32 value;
reg = pcim_iomap(pci, GP_RWBAR, 0);
- if (IS_ERR(reg))
- return PTR_ERR(reg);
+ if (!reg)
+ return -ENOMEM;
value = readl(reg + GP_RWREG1);
if (!(value & GP_RWREG1_ULPI_REFCLK_DISABLE))
--
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