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88ad61a292
Remove "a" character from the first line of patch
738-v5.14-01-net-dsa-qca8k-fix-an-endian-bug-in-qca8k-get-ethtool.patch
Otherwise `git am` fails to apply this patch which is annoying when
trying to do some development / rebasing.
Signed-off-by: Marek Behún <kabel@kernel.org>
(cherry picked from commit f811c33b19)
48 lines
1.5 KiB
Diff
48 lines
1.5 KiB
Diff
From aa3d020b22cb844ab7bdbb9e5d861a64666e2b74 Mon Sep 17 00:00:00 2001
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From: Dan Carpenter <dan.carpenter@oracle.com>
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Date: Wed, 9 Jun 2021 12:52:12 +0300
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Subject: [PATCH] net: dsa: qca8k: fix an endian bug in
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qca8k_get_ethtool_stats()
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The "hi" variable is a u64 but the qca8k_read() writes to the top 32
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bits of it. That will work on little endian systems but it's a bit
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subtle. It's cleaner to make declare "hi" as a u32. We will still need
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to cast it when we shift it later on in the function but that's fine.
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Fixes: 7c9896e37807 ("net: dsa: qca8k: check return value of read functions correctly")
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Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
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Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/dsa/qca8k.c | 6 +++---
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1 file changed, 3 insertions(+), 3 deletions(-)
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--- a/drivers/net/dsa/qca8k.c
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+++ b/drivers/net/dsa/qca8k.c
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@@ -1412,7 +1412,7 @@ qca8k_get_ethtool_stats(struct dsa_switc
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struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
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const struct qca8k_mib_desc *mib;
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u32 reg, i, val;
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- u64 hi = 0;
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+ u32 hi = 0;
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int ret;
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for (i = 0; i < ARRAY_SIZE(ar8327_mib); i++) {
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@@ -1424,14 +1424,14 @@ qca8k_get_ethtool_stats(struct dsa_switc
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continue;
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if (mib->size == 2) {
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- ret = qca8k_read(priv, reg + 4, (u32 *)&hi);
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+ ret = qca8k_read(priv, reg + 4, &hi);
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if (ret < 0)
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continue;
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}
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data[i] = val;
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if (mib->size == 2)
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- data[i] |= hi << 32;
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+ data[i] |= (u64)hi << 32;
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}
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}
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