media: cx25821: Fix a resource leak in cx25821_dev_setup()

Add release_mem_region() if ioremap() fails to release the memory
region obtained by cx25821_get_resources().

Signed-off-by: Haoxiang Li <lihaoxiang@isrc.iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

diff --git a/drivers/media/pci/cx25821/cx25821-core.c b/drivers/media/pci/cx25821/cx25821-core.c
index 6627fa9166d3018ce535bb9498100772195c118f..a7336be444748a62aa8bdee23bbb78b22a45e00b 100644 (file)
--- a/drivers/media/pci/cx25821/cx25821-core.c
+++ b/drivers/media/pci/cx25821/cx25821-core.c
@@ -908,6 +908,7 @@ static int cx25821_dev_setup(struct cx25821_dev *dev)
 
        if (!dev->lmmio) {
                CX25821_ERR("ioremap failed, maybe increasing __VMALLOC_RESERVE in page.h\n");
+               release_mem_region(dev->base_io_addr, pci_resource_len(dev->pci, 0));
                cx25821_iounmap(dev);
                return -ENOMEM;
        }