diff mbox series

[v2,1/7] hw/net/can/xlnx-versal-canfd: Fix interrupt level

Message ID 20240827034927.66659-2-doug@schmorgal.com
State New
Headers show
Series hw/net/can/xlnx-versal-canfd: Miscellaneous fixes | expand

Commit Message

Doug Brown Aug. 27, 2024, 3:49 a.m. UTC 
The interrupt level should be 0 or 1. The existing code was using the
interrupt flags to determine the level. In the only machine currently
supported (xlnx-versal-virt), the GICv3 was masking off all bits except
bit 0 when applying it, resulting in the IRQ never being delivered.

Signed-off-by: Doug Brown <doug@schmorgal.com>
Reviewed-by: Francisco Iglesias <francisco.iglesias@amd.com>
---
 hw/net/can/xlnx-versal-canfd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Pavel Pisa Aug. 29, 2024, 1:08 p.m. UTC | #1 
On Tuesday 27 of August 2024 05:49:21 Doug Brown wrote:
> The interrupt level should be 0 or 1. The existing code was using the
> interrupt flags to determine the level. In the only machine currently
> supported (xlnx-versal-virt), the GICv3 was masking off all bits except
> bit 0 when applying it, resulting in the IRQ never being delivered.
>
> Signed-off-by: Doug Brown <doug@schmorgal.com>
> Reviewed-by: Francisco Iglesias <francisco.iglesias@amd.com>

Reviewed-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
diff mbox series

Patch

diff --git a/hw/net/can/xlnx-versal-canfd.c b/hw/net/can/xlnx-versal-canfd.c
index 5f083c21e9..ad0c4da3c8 100644
--- a/hw/net/can/xlnx-versal-canfd.c
+++ b/hw/net/can/xlnx-versal-canfd.c
@@ -682,8 +682,8 @@  static uint8_t canfd_dlc_array[8] = {8, 12, 16, 20, 24, 32, 48, 64};
 
 static void canfd_update_irq(XlnxVersalCANFDState *s)
 {
-    unsigned int irq = s->regs[R_INTERRUPT_STATUS_REGISTER] &
-                        s->regs[R_INTERRUPT_ENABLE_REGISTER];
+    const bool irq = (s->regs[R_INTERRUPT_STATUS_REGISTER] &
+                      s->regs[R_INTERRUPT_ENABLE_REGISTER]) != 0;
     g_autofree char *path = object_get_canonical_path(OBJECT(s));
 
     /* RX watermark interrupts. */