diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-06-25 05:15:16 +0300 |
|---|---|---|
| committer | Jon Mason <jdmason@kudzu.us> | 2022-08-10 00:54:40 +0300 |
| commit | 8e4bfbe644a6b804a72fd4575d89507a6e1d9476 (patch) | |
| tree | 067a10f62c62baefe3105b18c12b623666286a01 /drivers/pci/endpoint | |
| parent | 556a2c7dca337954040ffdf0c544aa8bbb75583b (diff) | |
| download | linux-8e4bfbe644a6b804a72fd4575d89507a6e1d9476.tar.xz | |
PCI: endpoint: pci-epf-vntb: fix error handle in epf_ntb_mw_bar_init()
In error case of epf_ntb_mw_bar_init(), memory window BARs should be
cleared, so add 'num_mws' parameter in epf_ntb_mw_bar_clear() and
calling it in error path to clear the BARs. Also add missing error
code when pci_epc_mem_alloc_addr() fails.
Fixes: ff32fac00d97 ("NTB: EPF: support NTB transfer between PCI RC and EP connection")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/pci/endpoint')
| -rw-r--r-- | drivers/pci/endpoint/functions/pci-epf-vntb.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c index 599538cd554c..b069c84ec172 100644 --- a/drivers/pci/endpoint/functions/pci-epf-vntb.c +++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c @@ -561,6 +561,8 @@ err_alloc_peer_mem: return -1; } +static void epf_ntb_mw_bar_clear(struct epf_ntb *ntb, int num_mws); + /** * epf_ntb_db_bar_clear() - Clear doorbell BAR and free memory * allocated in peer's outbound address space @@ -617,13 +619,21 @@ static int epf_ntb_mw_bar_init(struct epf_ntb *ntb) &ntb->vpci_mw_phy[i], size); if (!ntb->vpci_mw_addr[i]) { + ret = -ENOMEM; dev_err(dev, "Failed to allocate source address\n"); - goto err_alloc_mem; + goto err_set_bar; } } return ret; + +err_set_bar: + pci_epc_clear_bar(ntb->epf->epc, + ntb->epf->func_no, + ntb->epf->vfunc_no, + &ntb->epf->bar[barno]); err_alloc_mem: + epf_ntb_mw_bar_clear(ntb, i); return ret; } @@ -631,12 +641,12 @@ err_alloc_mem: * epf_ntb_mw_bar_clear() - Clear Memory window BARs * @ntb: NTB device that facilitates communication between HOST and vHOST */ -static void epf_ntb_mw_bar_clear(struct epf_ntb *ntb) +static void epf_ntb_mw_bar_clear(struct epf_ntb *ntb, int num_mws) { enum pci_barno barno; int i; - for (i = 0; i < ntb->num_mws; i++) { + for (i = 0; i < num_mws; i++) { barno = ntb->epf_ntb_bar[BAR_MW0 + i]; pci_epc_clear_bar(ntb->epf->epc, ntb->epf->func_no, @@ -764,7 +774,7 @@ static int epf_ntb_epc_init(struct epf_ntb *ntb) return 0; err_write_header: - epf_ntb_mw_bar_clear(ntb); + epf_ntb_mw_bar_clear(ntb, ntb->num_mws); err_mw_bar_init: epf_ntb_db_bar_clear(ntb); err_db_bar_init: @@ -784,7 +794,7 @@ err_config_interrupt: static void epf_ntb_epc_cleanup(struct epf_ntb *ntb) { epf_ntb_db_bar_clear(ntb); - epf_ntb_mw_bar_clear(ntb); + epf_ntb_mw_bar_clear(ntb, ntb->num_mws); } #define EPF_NTB_R(_name) \ |