From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

Date: Sun, 26 Dec 2021 15:06:17 +0100

Subject: ionic: Initialize the 'lif->dbid_inuse' bitmap

Patch-mainline: v5.16-rc8

Git-commit: 140c7bc7d1195750342ea0e6ab76179499ae7cd7

References: jsc#SLE-19282

When allocated, this bitmap is not initialized. Only the first bit is set a

few lines below.

Use bitmap_zalloc() to make sure that it is cleared before being used.

Fixes: 6461b446f2a0 ("ionic: Add interrupts and doorbells")

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

Signed-off-by: Shannon Nelson <snelson@pensando.io>

Link: https://lore.kernel.org/r/6a478eae0b5e6c63774e1f0ddb1a3f8c38fa8ade.1640527506.git.christophe.jaillet@wanadoo.fr

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>

---

 drivers/net/ethernet/pensando/ionic/ionic_lif.c |    2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c

+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c

@@ -3135,7 +3135,7 @@ int ionic_lif_init(struct ionic_lif *lif

 		return -EINVAL;

 	}

-	lif->dbid_inuse = bitmap_alloc(lif->dbid_count, GFP_KERNEL);

+	lif->dbid_inuse = bitmap_zalloc(lif->dbid_count, GFP_KERNEL);

 	if (!lif->dbid_inuse) {

 		dev_err(dev, "Failed alloc doorbell id bitmap, aborting\n");

 		return -ENOMEM;