PCI: brcmstb: fix broken brcm_pcie_mdio_write() polling

MDIO_WR_DONE() tests bit 31, which is always 0 (==done) as
readw_poll_timeout_atomic does a 16-bit read. Replace with the readl
variant.

Fixes: ca5dcc76314d ("PCI: brcmstb: Replace status loops with read_poll_timeout_atomic()")
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>

diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index 618e844..a7f05e0 100644 (file)
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -420,7 +420,7 @@ static int brcm_pcie_mdio_write(void __iomem *base, u8 port,
        readl(base + PCIE_RC_DL_MDIO_ADDR);
        writel(MDIO_DATA_DONE_MASK | wrdata, base + PCIE_RC_DL_MDIO_WR_DATA);
 
-       err = readw_poll_timeout_atomic(base + PCIE_RC_DL_MDIO_WR_DATA, data,
+       err = readl_poll_timeout_atomic(base + PCIE_RC_DL_MDIO_WR_DATA, data,
                                        MDIO_WT_DONE(data), 10, 100);
        return err;
 }