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| author | Michael Pesa <michael.pesa@icloud.com> | 2026-07-21 22:02:43 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-08-20 08:29:33 +0200 |
| commit | 34b7e953d19a39515f8fc6c0820ebf243ea6b026 (patch) | |
| tree | a7a771735d9b5685459f6a7acaf3ddfd22b79698 /tools/lib/python | |
| parent | b76eee9c2157223aa4aac42ceebb563288e078aa (diff) | |
| download | linux-34b7e953d19a39515f8fc6c0820ebf243ea6b026.tar.gz linux-34b7e953d19a39515f8fc6c0820ebf243ea6b026.zip | |
irqchip/ast2700-intc: Disable all interrupt merge banks on probe
The INTC0 interrupt-merge (INTM) space has 50 sources at 10 per bank, i.e.
INTC0_INTM_NUM / INTM_IRQS_PER_BANK = 5 banks. This is reflected everywhere
the banks are indexed: the aspeed_intc0_intm_routes[] table has 5 valid
entries, and the mask/unmask/eoi paths compute the bank as (hwirq -
INTM_BASE) / INTM_IRQS_PER_BANK, spanning banks 0-4.
However, INTC0_INTM_BANK_NUM is hardcoded to 3, so
aspeed_intc0_disable_intm() only clears IER for banks 0-2 at probe. Banks 3
and 4 are left in whatever state the firmware configured them , which can
leave interrupts enabled before a handler is installed.
Derive the bank count from the source count so the probe-time disable
covers every bank.
Fixes: 07825e41519a ("irqchip/ast2700-intc: Add AST2700-A2 support")
Signed-off-by: Michael Pesa <michael.pesa@icloud.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260722050243.298355-1-michael.pesa@icloud.com
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions