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authorGustavo A. R. Silva <gustavo@embeddedor.com>2019-03-20 21:27:15 +0300
committerBjorn Helgaas <bhelgaas@google.com>2019-03-20 23:11:11 +0300
commit296bd5aea223d1d04f4e113ceec74d1fb3e422c5 (patch)
tree596bf227810856614e8b76267b5f20ed6c5a899b /drivers/pci/proc.c
parent9e98c678c2d6ae3a17cb2de55d17f69dddaa231b (diff)
downloadlinux-296bd5aea223d1d04f4e113ceec74d1fb3e422c5.tar.xz
PCI: Mark expected switch fall-throughs
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. This patch fixes the following warnings: drivers/pci/proc.c: In function ‘proc_bus_pci_ioctl’: drivers/pci/proc.c:216:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (arch_can_pci_mmap_wc()) { ^ drivers/pci/proc.c:225:2: note: here default: ^~~~~~~ drivers/pci/xen-pcifront.c: In function ‘pcifront_backend_changed’: drivers/pci/xen-pcifront.c:1105:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (xdev->state == XenbusStateClosed) ^ drivers/pci/xen-pcifront.c:1108:2: note: here case XenbusStateClosing: ^~~~ Notice that, in this particular case, the /* fall through */ comment is placed at the very bottom of the case statement, which is what GCC is expecting to find. Warning level 3 was used: -Wimplicit-fallthrough=3 This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/proc.c')
-rw-r--r--drivers/pci/proc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 6fa1627ce08d..445b51db75b0 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -222,6 +222,7 @@ static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
}
/* If arch decided it can't, fall through... */
#endif /* HAVE_PCI_MMAP */
+ /* fall through */
default:
ret = -EINVAL;
break;