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misc: alcor_pci: fix inverted branch condition

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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@canonical.com>
Fixes: 3ce3e45cc333 ("misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge")
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20210522043725.602179-1-ztong0001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tong Zhang 2021-05-22 00:37:25 -04:00 • committed by Greg Kroah-Hartman
commit b06ab67bd6
1 changed files with 1 additions and 1 deletions
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2
drivers/misc/cardreader/alcor_pci.c
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@ -138,7 +138,7 @@ static void alcor_pci_init_check_aspm(struct alcor_pci_priv *priv)
* 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);