From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ Upstream commit 9a36e2d44d122fe73a2a76ba73f1d50a65cf8210 ]
Add check for ioremap() and return the error if it fails in order to guarantee the success of ioremap().
Fixes: 862cd659a6fb ("octeon_ep: Add driver framework and device initialization") Signed-off-by: Jiasheng Jiang jiasheng@iscas.ac.cn Reviewed-by: Kalesh AP kalesh-anakkur.purayil@broadcom.com Link: https://lore.kernel.org/r/20230615033400.2971-1-jiasheng@iscas.ac.cn Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/marvell/octeon_ep/octep_main.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c index 5a898fb88e375..c70d2500a3634 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c @@ -941,6 +941,9 @@ int octep_device_setup(struct octep_device *oct) oct->mmio[i].hw_addr = ioremap(pci_resource_start(oct->pdev, i * 2), pci_resource_len(oct->pdev, i * 2)); + if (!oct->mmio[i].hw_addr) + goto unmap_prev; + oct->mmio[i].mapped = 1; }
@@ -980,7 +983,9 @@ int octep_device_setup(struct octep_device *oct) return 0;
unsupported_dev: - for (i = 0; i < OCTEP_MMIO_REGIONS; i++) + i = OCTEP_MMIO_REGIONS; +unmap_prev: + while (i--) iounmap(oct->mmio[i].hw_addr);
kfree(oct->conf);