You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.3 KiB
Diff
46 lines
1.3 KiB
Diff
From 4e5881da660ecbdb759d1730defdc091999b1893 Mon Sep 17 00:00:00 2001
|
|
From: popcornmix <popcornmix@gmail.com>
|
|
Date: Fri, 26 Jun 2015 17:37:38 +0100
|
|
Subject: [PATCH 083/171] bcm2708-vcio: Remove restriction of only a single
|
|
instance being open
|
|
|
|
We need more than one process to be able to use mailbox interface (e.g. HW cursor in fbturbo and hello_fft).
|
|
Locking should be handled on each mailbox access
|
|
---
|
|
drivers/mailbox/bcm2708-vcio.c | 14 --------------
|
|
1 file changed, 14 deletions(-)
|
|
|
|
--- a/drivers/mailbox/bcm2708-vcio.c
|
|
+++ b/drivers/mailbox/bcm2708-vcio.c
|
|
@@ -242,20 +242,9 @@ EXPORT_SYMBOL_GPL(bcm_mailbox_property);
|
|
|
|
/* Platform Device for Mailbox */
|
|
|
|
-/*
|
|
- * Is the device open right now? Used to prevent
|
|
- * concurent access into the same device
|
|
- */
|
|
-static bool device_is_open;
|
|
-
|
|
/* This is called whenever a process attempts to open the device file */
|
|
static int device_open(struct inode *inode, struct file *file)
|
|
{
|
|
- /* We don't want to talk to two processes at the same time */
|
|
- if (device_is_open)
|
|
- return -EBUSY;
|
|
-
|
|
- device_is_open = true;
|
|
try_module_get(THIS_MODULE);
|
|
|
|
return 0;
|
|
@@ -263,9 +252,6 @@ static int device_open(struct inode *ino
|
|
|
|
static int device_release(struct inode *inode, struct file *file)
|
|
{
|
|
- /* We're now ready for our next caller */
|
|
- device_is_open = false;
|
|
-
|
|
module_put(THIS_MODULE);
|
|
|
|
return 0;
|