From 9553821ead2b6e813a8b3a5360e20e28bfabc177 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 24 Sep 2013 10:54:51 +0300 Subject: [PATCH] spi: spi-topcliff-pch: fix a pci_iomap() check 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 Signed-off-by: Mark Brown --- drivers/spi/spi-topcliff-pch.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c index eaeeed51bbbf..777c40452bd1 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);