From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Vishal Aslot <os.vaslot@gmail.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Sasha Levin <sashal@kernel.org>,
linux-pci@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 11/14] PCI: ibmphp: Fix double unmap of io_mem
Date: Sat, 11 Sep 2021 09:13:42 -0400 [thread overview]
Message-ID: <20210911131345.285564-11-sashal@kernel.org> (raw)
In-Reply-To: <20210911131345.285564-1-sashal@kernel.org>
From: Vishal Aslot <os.vaslot@gmail.com>
[ Upstream commit faa2e05ad0dccf37f995bcfbb8d1980d66c02c11 ]
ebda_rsrc_controller() calls iounmap(io_mem) on the error path. Its caller,
ibmphp_access_ebda(), also calls iounmap(io_mem) on good and error paths.
Remove the iounmap(io_mem) invocation from ebda_rsrc_controller().
[bhelgaas: remove item from TODO]
Link: https://lore.kernel.org/r/20210818165751.591185-1-os.vaslot@gmail.com
Signed-off-by: Vishal Aslot <os.vaslot@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pci/hotplug/TODO | 3 ---
drivers/pci/hotplug/ibmphp_ebda.c | 5 +----
2 files changed, 1 insertion(+), 7 deletions(-)
diff --git a/drivers/pci/hotplug/TODO b/drivers/pci/hotplug/TODO
index a32070be5adf..cc6194aa24c1 100644
--- a/drivers/pci/hotplug/TODO
+++ b/drivers/pci/hotplug/TODO
@@ -40,9 +40,6 @@ ibmphp:
* The return value of pci_hp_register() is not checked.
-* iounmap(io_mem) is called in the error path of ebda_rsrc_controller()
- and once more in the error path of its caller ibmphp_access_ebda().
-
* The various slot data structures are difficult to follow and need to be
simplified. A lot of functions are too large and too complex, they need
to be broken up into smaller, manageable pieces. Negative examples are
diff --git a/drivers/pci/hotplug/ibmphp_ebda.c b/drivers/pci/hotplug/ibmphp_ebda.c
index 11a2661dc062..7fb75401ad8a 100644
--- a/drivers/pci/hotplug/ibmphp_ebda.c
+++ b/drivers/pci/hotplug/ibmphp_ebda.c
@@ -714,8 +714,7 @@ static int __init ebda_rsrc_controller(void)
/* init hpc structure */
hpc_ptr = alloc_ebda_hpc(slot_num, bus_num);
if (!hpc_ptr) {
- rc = -ENOMEM;
- goto error_no_hpc;
+ return -ENOMEM;
}
hpc_ptr->ctlr_id = ctlr_id;
hpc_ptr->ctlr_relative_id = ctlr;
@@ -910,8 +909,6 @@ static int __init ebda_rsrc_controller(void)
kfree(tmp_slot);
error_no_slot:
free_ebda_hpc(hpc_ptr);
-error_no_hpc:
- iounmap(io_mem);
return rc;
}
--
2.30.2
prev parent reply other threads:[~2021-09-11 13:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210911131345.285564-1-sashal@kernel.org>
2021-09-11 13:13 ` [PATCH AUTOSEL 5.4 03/14] PCI: Add ACS quirks for NXP LX2xx0 and LX2xx2 platforms Sasha Levin
2021-09-11 13:13 ` [PATCH AUTOSEL 5.4 07/14] PCI: Add ACS quirks for Cavium multi-function devices Sasha Levin
2021-09-11 13:13 ` Sasha Levin [this message]
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