From: Dongliang Mu <mudongliangabcd@gmail.com> stable inclusion from linux-4.19.205 commit f4f2872d6641d7744081711034ee96c4b5ca206c -------------------------------- [ Upstream commit 50f05bd114a46a74726e432bf81079d3f13a55b7 ] The error handling code in tpci200_register does not free interface_regs allocated by ioremap and the current version of error handling code is problematic. Fix this by refactoring the error handling code and free interface_regs when necessary. Fixes: 43986798fd50 ("ipack: add error handling for ioremap_nocache") Cc: stable@vger.kernel.org Reported-by: Dongliang Mu <mudongliangabcd@gmail.com> Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com> Link: https://lore.kernel.org/r/20210810100323.3938492-2-mudongliangabcd@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/ipack/carriers/tpci200.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/ipack/carriers/tpci200.c b/drivers/ipack/carriers/tpci200.c index 2172d1efa71e6..4c8da6af25168 100644 --- a/drivers/ipack/carriers/tpci200.c +++ b/drivers/ipack/carriers/tpci200.c @@ -259,7 +259,7 @@ static int tpci200_register(struct tpci200_board *tpci200) "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 2 !", tpci200->info->pdev->bus->number, tpci200->info->pdev->devfn); - goto out_disable_pci; + goto err_disable_device; } /* Request IO ID INT space (Bar 3) */ @@ -271,7 +271,7 @@ static int tpci200_register(struct tpci200_board *tpci200) "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 3 !", tpci200->info->pdev->bus->number, tpci200->info->pdev->devfn); - goto out_release_ip_space; + goto err_ip_interface_bar; } /* Request MEM8 space (Bar 5) */ @@ -282,7 +282,7 @@ static int tpci200_register(struct tpci200_board *tpci200) "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 5!", tpci200->info->pdev->bus->number, tpci200->info->pdev->devfn); - goto out_release_ioid_int_space; + goto err_io_id_int_spaces_bar; } /* Request MEM16 space (Bar 4) */ @@ -293,7 +293,7 @@ static int tpci200_register(struct tpci200_board *tpci200) "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 4!", tpci200->info->pdev->bus->number, tpci200->info->pdev->devfn); - goto out_release_mem8_space; + goto err_mem8_space_bar; } /* Map internal tpci200 driver user space */ @@ -307,7 +307,7 @@ static int tpci200_register(struct tpci200_board *tpci200) tpci200->info->pdev->bus->number, tpci200->info->pdev->devfn); res = -ENOMEM; - goto out_release_mem8_space; + goto err_mem16_space_bar; } /* Initialize lock that protects interface_regs */ @@ -346,18 +346,22 @@ static int tpci200_register(struct tpci200_board *tpci200) "(bn 0x%X, sn 0x%X) unable to register IRQ !", tpci200->info->pdev->bus->number, tpci200->info->pdev->devfn); - goto out_release_ioid_int_space; + goto err_interface_regs; } return 0; -out_release_mem8_space: +err_interface_regs: + pci_iounmap(tpci200->info->pdev, tpci200->info->interface_regs); +err_mem16_space_bar: + pci_release_region(tpci200->info->pdev, TPCI200_MEM16_SPACE_BAR); +err_mem8_space_bar: pci_release_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR); -out_release_ioid_int_space: +err_io_id_int_spaces_bar: pci_release_region(tpci200->info->pdev, TPCI200_IO_ID_INT_SPACES_BAR); -out_release_ip_space: +err_ip_interface_bar: pci_release_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR); -out_disable_pci: +err_disable_device: pci_disable_device(tpci200->info->pdev); return res; } -- 2.25.1