ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2024-12-19 05:37:54 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

hw: free correct IRQ when closing IRQ session

Browse Source 
The ~Irq_session_component relied on the IRQ number obtained by the
corresponding kernel IRQ object to mark the IRQ as free at the IRQ
allocator. However, since the kernel IRQ object is initialized not
before the 'sigh' function is called, the IRQ of sessions that
never called 'sigh' could not be freed correctly. This patch fixes
the problem by not relying on the kernel IRQ object for obtaining
the number in the destructor but using the '_irq_number' member
variable instead.
This commit is contained in:
Norman Feske 2015-06-23 14:15:43 +02:00 committed by Christian Helmuth
parent 21c7fa2881
commit 281d3ffba9
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
repos/base-hw/src/core/irq_session_component.cc
View File

@ -57,7 +57,7 @@ Irq_session_component::~Irq_session_component()
using namespace Kernel;
User_irq * kirq = reinterpret_cast<User_irq*>(&_kernel_object);
_irq_alloc->free((void *)(addr_t)static_cast<Kernel::Irq*>(kirq)->irq_number());
_irq_alloc->free((void *)_irq_number);
if (_sig_cap.valid())
Kernel::delete_irq(kirq);
}
@ -66,8 +66,7 @@ Irq_session_component::~Irq_session_component()
Irq_session_component::Irq_session_component(Range_allocator * const irq_alloc,
const char * const args)
:
_irq_number(Platform::irq(_find_irq_number(args))),
_irq_alloc(irq_alloc)
_irq_number(Platform::irq(_find_irq_number(args))), _irq_alloc(irq_alloc)
{
long const msi = Arg_string::find_arg(args, "device_config_phys").long_value(0);
if (msi)
@ -75,7 +74,7 @@ Irq_session_component::Irq_session_component(Range_allocator * const irq_alloc,
/* allocate interrupt */
if (_irq_alloc->alloc_addr(1, _irq_number).is_error()) {
PERR("unavailable interrupt requested");
PERR("unavailable interrupt %d requested", _irq_number);
throw Root::Invalid_args();
}