95e5fda3b5
The interrupt handler (pt_core_irq_handler()) of the ptdma
driver can be called from interrupt context. The code flow
in this function can lead down to pt_core_execute_cmd() which
will attempt to grab a mutex, which is not appropriate in
interrupt context and ultimately leads to a kernel panic.
The fix here changes this mutex to a spinlock, which has
been verified to resolve the issue.
Fixes:
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| ptdma-debugfs.c | ||
| ptdma-dev.c | ||
| ptdma-dmaengine.c | ||
| ptdma-pci.c | ||
| ptdma.h | ||