From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Evgeny Novikov <novikov@ispras.ru>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
Sasha Levin <sashal@kernel.org>,
linux-media@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 05/22] media: vpss: clean up resources in init
Date: Wed, 19 Aug 2020 20:02:12 -0400 [thread overview]
Message-ID: <20200820000229.215333-5-sashal@kernel.org> (raw)
In-Reply-To: <20200820000229.215333-1-sashal@kernel.org>
From: Evgeny Novikov <novikov@ispras.ru>
[ Upstream commit 9c487b0b0ea7ff22127fe99a7f67657d8730ff94 ]
If platform_driver_register() fails within vpss_init() resources are not
cleaned up. The patch fixes this issue by introducing the corresponding
error handling.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/platform/davinci/vpss.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/davinci/vpss.c b/drivers/media/platform/davinci/vpss.c
index d38d2bbb6f0f8..7000f0bf0b353 100644
--- a/drivers/media/platform/davinci/vpss.c
+++ b/drivers/media/platform/davinci/vpss.c
@@ -505,19 +505,31 @@ static void vpss_exit(void)
static int __init vpss_init(void)
{
+ int ret;
+
if (!request_mem_region(VPSS_CLK_CTRL, 4, "vpss_clock_control"))
return -EBUSY;
oper_cfg.vpss_regs_base2 = ioremap(VPSS_CLK_CTRL, 4);
if (unlikely(!oper_cfg.vpss_regs_base2)) {
- release_mem_region(VPSS_CLK_CTRL, 4);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto err_ioremap;
}
writel(VPSS_CLK_CTRL_VENCCLKEN |
- VPSS_CLK_CTRL_DACCLKEN, oper_cfg.vpss_regs_base2);
+ VPSS_CLK_CTRL_DACCLKEN, oper_cfg.vpss_regs_base2);
+
+ ret = platform_driver_register(&vpss_driver);
+ if (ret)
+ goto err_pd_register;
+
+ return 0;
- return platform_driver_register(&vpss_driver);
+err_pd_register:
+ iounmap(oper_cfg.vpss_regs_base2);
+err_ioremap:
+ release_mem_region(VPSS_CLK_CTRL, 4);
+ return ret;
}
subsys_initcall(vpss_init);
module_exit(vpss_exit);
--
2.25.1
next prev parent reply other threads:[~2020-08-20 0:09 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-20 0:02 [PATCH AUTOSEL 5.4 01/22] scsi: ufs: Add DELAY_BEFORE_LPM quirk for Micron devices Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 02/22] scsi: target: tcmu: Fix crash in tcmu_flush_dcache_range on ARM Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 03/22] media: budget-core: Improve exception handling in budget_register() Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 04/22] rtc: goldfish: Enable interrupt in set_alarm() when necessary Sasha Levin
2020-08-20 0:02 ` Sasha Levin [this message]
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 06/22] Input: psmouse - add a newline when printing 'proto' by sysfs Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 07/22] MIPS: Fix unable to reserve memory for Crash kernel Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 08/22] m68knommu: fix overwriting of bits in ColdFire V3 cache control Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 09/22] svcrdma: Fix another Receive buffer leak Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 10/22] xfs: fix inode quota reservation checks Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 11/22] drm/ttm: fix offset in VMAs with a pg_offs in ttm_bo_vm_access Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 12/22] jffs2: fix UAF problem Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 13/22] ceph: fix use-after-free for fsc->mdsc Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 14/22] swiotlb-xen: use vmalloc_to_page on vmalloc virt addresses Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 15/22] cpufreq: intel_pstate: Fix cpuinfo_max_freq when MSR_TURBO_RATIO_LIMIT is 0 Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 16/22] scsi: libfc: Free skb in fc_disc_gpn_id_resp() for valid cases Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 17/22] virtio_ring: Avoid loop when vq is broken in virtqueue_poll Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 18/22] media: camss: fix memory leaks on error handling paths in probe Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 19/22] tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 20/22] xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 21/22] alpha: fix annotation of io{read,write}{16,32}be() Sasha Levin
2020-08-20 0:02 ` [PATCH AUTOSEL 5.4 22/22] fs/signalfd.c: fix inconsistent return codes for signalfd4 Sasha Levin
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