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qede: fix interrupt coalescing configuration

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commit 908d4bb7c5 upstream.

On default driver load device gets configured with unexpected
higher interrupt coalescing values instead of default expected
values as memory allocated from krealloc() is not supposed to
be zeroed out and may contain garbage values.

Fix this by allocating the memory of required size first with
kcalloc() and then use krealloc() to resize and preserve the
contents across down/up of the interface.

Signed-off-by: Manish Chopra <manishc@marvell.com>
Fixes: b0ec5489c4 ("qede: preserve per queue stats across up/down of interface")
Cc: stable@vger.kernel.org
Cc: Bhaskar Upadhaya <bupadhaya@marvell.com>
Cc: David S. Miller <davem@davemloft.net>
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2160054
Signed-off-by: Alok Prasad <palok@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Manish Chopra
2023-02-16 03:54:47 -08:00
committed by Greg Kroah-Hartman
parent fd081afd21
commit 935ba268ac
1 changed files with 9 additions and 2 deletions
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11
drivers/net/ethernet/qlogic/qede/qede_main.c
View File

@@ -909,8 +909,15 @@ static int qede_alloc_fp_array(struct qede_dev *edev)
goto err;
}
mem = krealloc(edev->coal_entry, QEDE_QUEUE_CNT(edev) *
sizeof(*edev->coal_entry), GFP_KERNEL);
if (!edev->coal_entry) {
mem = kcalloc(QEDE_MAX_RSS_CNT(edev),
sizeof(*edev->coal_entry), GFP_KERNEL);
} else {
mem = krealloc(edev->coal_entry,
QEDE_QUEUE_CNT(edev) * sizeof(*edev->coal_entry),
GFP_KERNEL);
}
if (!mem) {
DP_ERR(edev, "coalesce entry allocation failed\n");
kfree(edev->coal_entry);