From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 28 Oct 2010 01:34:59 +0000 (-0700)
Subject: proc_bus_pci_ioctl: remove pointless BKL usage
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0b2d8d9e562de3ee2476f549549e4fefbb7a4213;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

proc_bus_pci_ioctl: remove pointless BKL usage

The BKL was pushed into this function when it was converted to use the
unlocked_ioctl interface, but nothing that the function touches is
actually protected by the BKL.  So just remove the BKL entirely, so that
we finally can get a realistic system build without the BKL being
enabled at all.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 01f0306525a5..895136f13edc 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -212,8 +212,6 @@ static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
 #endif /* HAVE_PCI_MMAP */
 	int ret = 0;
 
-	lock_kernel();
-
 	switch (cmd) {
 	case PCIIOC_CONTROLLER:
 		ret = pci_domain_nr(dev->bus);
@@ -242,7 +240,6 @@ static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
 		break;
 	};
 
-	unlock_kernel();
 	return ret;
 }