This is a note to let you know that I've just added the patch titled
vDPA/ifcvf: Fix pci_read_config_byte() return code handling
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
vdpa-ifcvf-fix-pci_read_config_byte-return-code-hand.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8b6f294232484f464b431157fa32d33e0bcab0a5
Author: Yuan Can <yuancan@xxxxxxxxxx>
Date: Thu Oct 17 09:38:12 2024 +0800
vDPA/ifcvf: Fix pci_read_config_byte() return code handling
[ Upstream commit 7f8825b2a78ac392d3fbb3a2e65e56d9e39d75e9 ]
ifcvf_init_hw() uses pci_read_config_byte() that returns
PCIBIOS_* codes. The error handling, however, assumes the codes are
normal errnos because it checks for < 0.
Convert the error check to plain non-zero check.
Fixes: 5a2414bc454e ("virtio: Intel IFC VF driver for VDPA")
Signed-off-by: Yuan Can <yuancan@xxxxxxxxxx>
Message-Id: <20241017013812.129952-1-yuancan@xxxxxxxxxx>
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Acked-by: Zhu Lingshan <lingshan.zhu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c b/drivers/vdpa/ifcvf/ifcvf_base.c
index 5091ff9d6c93f..bdadc5714e0e4 100644
--- a/drivers/vdpa/ifcvf/ifcvf_base.c
+++ b/drivers/vdpa/ifcvf/ifcvf_base.c
@@ -105,7 +105,7 @@ int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *pdev)
u32 i;
ret = pci_read_config_byte(pdev, PCI_CAPABILITY_LIST, &pos);
- if (ret < 0) {
+ if (ret) {
IFCVF_ERR(pdev, "Failed to read PCI capability list\n");
return -EIO;
}
