[PATCH 4.4 46/72] net: ks8851-ml: Fix 16-bit data access

From: Greg Kroah-Hartman
Date: Tue Mar 10 2020 - 08:42:34 EST


From: Marek Vasut <marex@xxxxxxx>

[ Upstream commit edacb098ea9c31589276152f09b4439052c0f2b1 ]

The packet data written to and read from Micrel KSZ8851-16MLLI must be
byte-swapped in 16-bit mode, add this byte-swapping.

Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Lukas Wunner <lukas@xxxxxxxxx>
Cc: Petr Stetiar <ynezz@xxxxxxx>
Cc: YueHaibing <yuehaibing@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/micrel/ks8851_mll.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/micrel/ks8851_mll.c b/drivers/net/ethernet/micrel/ks8851_mll.c
index 721f851674531..20356976b9772 100644
--- a/drivers/net/ethernet/micrel/ks8851_mll.c
+++ b/drivers/net/ethernet/micrel/ks8851_mll.c
@@ -515,7 +515,7 @@ static inline void ks_inblk(struct ks_net *ks, u16 *wptr, u32 len)
{
len >>= 1;
while (len--)
- *wptr++ = (u16)ioread16(ks->hw_addr);
+ *wptr++ = be16_to_cpu(ioread16(ks->hw_addr));
}

/**
@@ -529,7 +529,7 @@ static inline void ks_outblk(struct ks_net *ks, u16 *wptr, u32 len)
{
len >>= 1;
while (len--)
- iowrite16(*wptr++, ks->hw_addr);
+ iowrite16(cpu_to_be16(*wptr++), ks->hw_addr);
}

static void ks_disable_int(struct ks_net *ks)
--
2.20.1