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PCI: xgene: Fix double free on init error 

The "port" variable was allocated with devm_kzalloc() so if we free it with
kfree() it will be freed twice.  Also I changed it to propogate the error
from devm_ioremap_resource() instead of returning -ENOMEM.

Fixes: c5d4603961 ("PCI: Add MCFG quirks for X-Gene host controller")
Also-posted-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Tanmay Inamdar <tinamdar@apm.com>
This commit is contained in:
Dan Carpenter 2017-01-21 07:49:49 +03:00 committed by Bjorn Helgaas
parent 7ce7d89f48
commit 1ded56df32
1 changed files with 2 additions and 5 deletions
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7
drivers/pci/host/pci-xgene.c
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@ -246,14 +246,11 @@ static int xgene_pcie_ecam_init(struct pci_config_window *cfg, u32 ipversion)
ret = xgene_get_csr_resource(adev, &csr);
if (ret) {
dev_err(dev, "can't get CSR resource\n");
kfree(port);
return ret;
}
port->csr_base = devm_ioremap_resource(dev, &csr);
if (IS_ERR(port->csr_base)) {
kfree(port);
return -ENOMEM;
}
if (IS_ERR(port->csr_base))
return PTR_ERR(port->csr_base);
port->cfg_base = cfg->win;
port->version = ipversion;