If pci_iomap() returns NULL, adding "PCH_ADDRESS_SIZE * plat_dev->id"
can make it non-NULL which breaks the error handling.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c
index eaeeed5..777c404 100644
--- a/drivers/spi/spi-topcliff-pch.c
+++ b/drivers/spi/spi-topcliff-pch.c
@@ -1410,13 +1410,13 @@ static int pch_spi_pd_probe(struct platform_device *plat_dev)
/* baseaddress + address offset) */
data->io_base_addr = pci_resource_start(board_dat->pdev, 1) +
PCH_ADDRESS_SIZE * plat_dev->id;
- data->io_remap_addr = pci_iomap(board_dat->pdev, 1, 0) +
- PCH_ADDRESS_SIZE * plat_dev->id;
+ data->io_remap_addr = pci_iomap(board_dat->pdev, 1, 0);
if (!data->io_remap_addr) {
dev_err(&plat_dev->dev, "%s pci_iomap failed\n", __func__);
ret = -ENOMEM;
goto err_pci_iomap;
}
+ data->io_remap_addr += PCH_ADDRESS_SIZE * plat_dev->id;
dev_dbg(&plat_dev->dev, "[ch%d] remap_addr=%p\n",
plat_dev->id, data->io_remap_addr);
--
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