From: Wen Yang <wen.yang99@xxxxxxxxxx>
[ Upstream commit 726dabfde6aa35a4f1508e235ae37edbbf9fbc65 ]
Functions copying from/to IO addresses should use the
memcpy_fromio()/memcpy_toio() API rather than plain memcpy().
Fix the issue detected through the sparse tool.
Fixes: 349e7a85b25f ("PCI: endpoint: functions: Add an EP function to test PCI")
Suggested-by: Kishon Vijay Abraham I <kishon@xxxxxx>
Signed-off-by: Wen Yang <wen.yang99@xxxxxxxxxx>
[lorenzo.pieralisi@xxxxxxx: updated log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Acked-by: Kishon Vijay Abraham I <kishon@xxxxxx>
CC: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
CC: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
CC: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
CC: Niklas Cassel <niklas.cassel@xxxxxxxx>
CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
CC: Cyrille Pitchen <cyrille.pitchen@xxxxxxxxxxxxxxxxxx>
CC: linux-pci@xxxxxxxxxxxxxxx
CC: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/pci/endpoint/functions/pci-epf-test.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 3e86fa3c7da3..4bbd26e8a9e2 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -175,7 +175,7 @@ static int pci_epf_test_read(struct pci_epf_test *epf_test)
goto err_map_addr;
}
- memcpy(buf, src_addr, reg->size);
+ memcpy_fromio(buf, src_addr, reg->size);
crc32 = crc32_le(~0, buf, reg->size);
if (crc32 != reg->checksum)
@@ -230,7 +230,7 @@ static int pci_epf_test_write(struct pci_epf_test *epf_test)
get_random_bytes(buf, reg->size);
reg->checksum = crc32_le(~0, buf, reg->size);
- memcpy(dst_addr, buf, reg->size);
+ memcpy_toio(dst_addr, buf, reg->size);
/*
* wait 1ms inorder for the write to complete. Without this delay L3
--
2.20.1
