[PATCH] PCI: brcmstb: fix broken brcm_pcie_mdio_write() polling

[Stefan Wahren]

From: Jonathan Bell <jonathan at raspberrypi.com>

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 at raspberrypi.com>
Signed-off-by: Stefan Wahren <wahrenst at gmx.net>
---
 drivers/pci/controller/pcie-brcmstb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index 618e84402eb50..a7f05e0c4ac51 100644
--- 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;
 }