This is a note to let you know that I've just added the patch titled
PCI: brcmstb: Fix broken brcm_pcie_mdio_write() polling
to the 6.8-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:
pci-brcmstb-fix-broken-brcm_pcie_mdio_write-polling.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8f782ad335bfcaa185cebbd508e3399c87bf0c22
Author: Jonathan Bell <jonathan@xxxxxxxxxxxxxxx>
Date: Sat Feb 17 14:37:22 2024 +0100
PCI: brcmstb: Fix broken brcm_pcie_mdio_write() polling
[ Upstream commit 039741a8d7c9a01c1bc84a5ac5aa770a5e138a30 ]
The MDIO_WT_DONE() macro tests bit 31, which is always 0 (== done) as
readw_poll_timeout_atomic() does a 16-bit read. Replace with the readl
variant.
[kwilczynski: commit log]
Fixes: ca5dcc76314d ("PCI: brcmstb: Replace status loops with read_poll_timeout_atomic()")
Link: https://lore.kernel.org/linux-pci/20240217133722.14391-1-wahrenst@xxxxxxx
Signed-off-by: Jonathan Bell <jonathan@xxxxxxxxxxxxxxx>
Signed-off-by: Stefan Wahren <wahrenst@xxxxxxx>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@xxxxxxxxxx>
Acked-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index 5b0730c3891b8..c08683febdd40 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -336,7 +336,7 @@ 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;
}
