From 0a1a9b49427f13b6e12366eb8f06b8094ab61447 Mon Sep 17 00:00:00 2001 From: Wei Yang Date: Tue, 30 Jun 2015 09:16:44 +0800 Subject: [PATCH] PCI: Simplify pci_find_(ext_)capability() return value checks The return value of the pci_find_(ext_)capability() is either zero or the position of a capability. It is never negative. This patch consolidates the form of check from (pos <= 0) to (!pos). Signed-off-by: Wei Yang Signed-off-by: Bjorn Helgaas --- drivers/pci/pci.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 66bd80e..29b5605 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -971,7 +971,7 @@ static int pci_save_pcix_state(struct pci_dev *dev) struct pci_cap_saved_state *save_state; pos = pci_find_capability(dev, PCI_CAP_ID_PCIX); - if (pos <= 0) + if (!pos) return 0; save_state = pci_find_saved_cap(dev, PCI_CAP_ID_PCIX); @@ -994,7 +994,7 @@ static void pci_restore_pcix_state(struct pci_dev *dev) save_state = pci_find_saved_cap(dev, PCI_CAP_ID_PCIX); pos = pci_find_capability(dev, PCI_CAP_ID_PCIX); - if (!save_state || pos <= 0) + if (!save_state || !pos) return; cap = (u16 *)&save_state->cap.data[0]; @@ -2158,7 +2158,7 @@ static int _pci_add_cap_save_buffer(struct pci_dev *dev, u16 cap, else pos = pci_find_capability(dev, cap); - if (pos <= 0) + if (!pos) return 0; save_state = kzalloc(sizeof(*save_state) + size, GFP_KERNEL); -- 2.7.4