[PATCH v14 6/7] PCI: endpoint: pci-epf-vntb: fix sparse build warning at epf_db

Frank Li
2022-10-28T16:00:59Z

From: Frank Li <frank.li@nxp.com>

Using epf_db[i] instead of readl() because epf_db is in local
system memory and allocated by dma_alloc_coherent().

Signed-off-by: Frank Li <frank.li@nxp.com>
---
drivers/pci/endpoint/functions/pci-epf-vntb.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c
index 54616281da9e..db3455c1589b 100644
--- a/drivers/pci/endpoint/functions/pci-epf-vntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c
@@ -136,7 +136,7 @@ struct epf_ntb {

struct epf_ntb_ctrl *reg;

- void __iomem *epf_db;
+ u32 *epf_db;

phys_addr_t vpci_mw_phy[MAX_MW];
void __iomem *vpci_mw_addr[MAX_MW];
@@ -257,12 +257,9 @@ static void epf_ntb_cmd_handler(struct work_struct *work)
ntb = container_of(work, struct epf_ntb, cmd_handler.work);

for (i = 1; i < ntb->db_count; i++) {
- if (readl(ntb->epf_db + i * sizeof(u32))) {
- if (readl(ntb->epf_db + i * sizeof(u32)))
- ntb->db |= 1 << (i - 1);
-
+ if (ntb->epf_db[i]) {
ntb_db_event(&ntb->ntb, i);
- writel(0, ntb->epf_db + i * sizeof(u32));
+ ntb->epf_db[i] = 0;
}
}

--
2.34.1