linux-kernel - [PATCH 5.4 149/149] misc: alcor_pci: fix inverted branch condition

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Date:   Mon, 19 Jul 2021 16:54:17 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Colin Ian King <colin.king@...onical.com>,
        Tong Zhang <ztong0001@...il.com>
Subject: [PATCH 5.4 149/149] misc: alcor_pci: fix inverted branch condition

From: Tong Zhang <ztong0001@...il.com>

commit 281e468446994a7672733af2bf941f4110d4a895 upstream.

This patch fixes a trivial mistake that I made in the previous attempt
in fixing the null bridge issue. The branch condition is inverted and we
should call alcor_pci_find_cap_offset() only if bridge is not null.

Reported-by: Colin Ian King <colin.king@...onical.com>
Fixes: 3ce3e45cc333 ("misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge")
Signed-off-by: Tong Zhang <ztong0001@...il.com>
Link: https://lore.kernel.org/r/20210522043725.602179-1-ztong0001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/misc/cardreader/alcor_pci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/misc/cardreader/alcor_pci.c
+++ b/drivers/misc/cardreader/alcor_pci.c
@@ -138,7 +138,7 @@ static void alcor_pci_init_check_aspm(st
 	 * priv->parent_pdev will be NULL. In this case we don't check its
 	 * capability and disable ASPM completely.
 	 */
-	if (!priv->parent_pdev)
+	if (priv->parent_pdev)
 		priv->parent_cap_off = alcor_pci_find_cap_offset(priv,
 							 priv->parent_pdev);