accel/qaic: Mask out SR-IOV PCI resources

[ Upstream commit 8685520474bfc0fe4be83c3cbfe3fb3e1ca1514a ]

During the initialization of the qaic device, pci_select_bars() is
used to fetch a bitmask of the BARs exposed by the device. On devices
that have Virtual Functions capabilities, the bitmask includes SR-IOV
BARs.

Use a mask to filter out SR-IOV BARs if they exist.

Signed-off-by: Youssef Samir <quic_yabdulra@quicinc.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250117170943.2643280-6-quic_jhugo@quicinc.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/accel/qaic/qaic_drv.c b/drivers/accel/qaic/qaic_drv.c
index 81819b9ef8d4fd148d1e85a1ad57d987a5cc199f..32f0e81d3e30480565f957ab8e375bf136c5e1e8 100644 (file)
--- a/drivers/accel/qaic/qaic_drv.c
+++ b/drivers/accel/qaic/qaic_drv.c
@@ -431,7 +431,7 @@ static int init_pci(struct qaic_device *qdev, struct pci_dev *pdev)
        int bars;
        int ret;
 
-       bars = pci_select_bars(pdev, IORESOURCE_MEM);
+       bars = pci_select_bars(pdev, IORESOURCE_MEM) & 0x3f;
 
        /* make sure the device has the expected BARs */
        if (bars != (BIT(0) | BIT(2) | BIT(4))) {