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author | James <> | 2015-11-04 11:49:21 +0000 |
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committer | James <> | 2015-11-04 11:49:21 +0000 |
commit | 716ca530e1c4515d8683c9d5be3d56b301758b66 (patch) | |
tree | 700eb5bcc1a462a5f21dcec15ce7c97ecfefa772 /target/linux/brcm2708/patches-4.1/0083-bcm2708-vcio-Remove-restriction-of-only-a-single-ins.patch | |
download | trunk-47381-master.tar.gz trunk-47381-master.tar.bz2 trunk-47381-master.zip |
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0083-bcm2708-vcio-Remove-restriction-of-only-a-single-ins.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.1/0083-bcm2708-vcio-Remove-restriction-of-only-a-single-ins.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0083-bcm2708-vcio-Remove-restriction-of-only-a-single-ins.patch b/target/linux/brcm2708/patches-4.1/0083-bcm2708-vcio-Remove-restriction-of-only-a-single-ins.patch new file mode 100644 index 0000000..bf98fbd --- /dev/null +++ b/target/linux/brcm2708/patches-4.1/0083-bcm2708-vcio-Remove-restriction-of-only-a-single-ins.patch @@ -0,0 +1,45 @@ +From f789239f3014997243c1f46e74c7f653d3826503 Mon Sep 17 00:00:00 2001 +From: popcornmix <popcornmix@gmail.com> +Date: Fri, 26 Jun 2015 17:37:38 +0100 +Subject: [PATCH 083/203] 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; |